Entries |
Document | Title | Date |
20080214324 | Golf ball - The invention provides a golf ball composed of, at least in part, a molded and crosslinked material obtained from a rubber composition made of a base rubber, a filler, an organic peroxide, an α,β-unsaturated carboxylic acid and/or metal salt thereof, and a copper salt of a saturated or unsaturated fatty acid. The molded rubber composition has a very high rebound, and is thus useful as a golf ball core for achieving an excellent flight performance. | 09-04-2008 |
20080220899 | MULTI-LAYER GOLF BALL HAVING IMPROVED INTER-LAYER ADHESION VIA INDUCTION HEATING - This invention is directed to golf balls having at least two adjacent layers, wherein a coating layer of metal materials is on at least one surface of the adjacent layers. The adhesion of the adjacent layer is improved by induction heating. The invention also is directed to ink solution for golf equipment comprising metal materials that can improve adhesion of the ink to the golf equipment. | 09-11-2008 |
20080261721 | IN-MOLD POWDER COATING OF GOLF BALL EQUIPMENT AND METHODS OF MAKING THE SAME - A method for coating golf ball components is provided and includes the step of adhering a thin layer of a non-ionomeric polyolefin powder to the interior surfaces of a golf ball mold. The polyolefin powder is adhered to the mold using electrostatic, tribostatic or fluidized bed processes. The golf ball component is placed within the mold, and a sufficient amount of heat and pressure is applied to the mold so that the thin layer of non-ionomeric polyolefin powder fuses to the golf ball component. | 10-23-2008 |
20080261722 | COMPOSITIONS FOR USE IN GOLF BALLS - A golf ball including a core and at least one cover layer disposed about the core, wherein the core or the cover layer is formed from a composition comprising a base polymer, a crosslink initiator, and at least one additive comprising phenothiazine or a perhaloalkyl additive having a structure of: | 10-23-2008 |
20080274825 | Two-piece golf ball having an improved core composition - The present invention is directed to a two-piece golf ball having a core and a cover, wherein the core comprises at least one unsaturated polymer, at least one cross-linking agent, at least one co-cross-linking agent, and at least one peptizer (comprising one or more organic sulfur compounds, or one or more metal or non-metal salts of an organic sulfur compound), and optionally at least one weight adjusting filler. The improved two-piece balls have optimal velocity and distance performance, as well as excellent shot feel, the called “long and soft” combination. The balls also demonstrate excellent durability properties, and ease of manufacture. | 11-06-2008 |
20080312008 | SOLID GOLF BALL - The invention provides a solid golf ball having a solid core and a cover layer that encases the core and has an outermost layer on an outside surface of which are formed a plurality of dimples. The solid core is formed of a rubber composition composed of 100 parts by weight of a base rubber that includes 60 to 100 parts by weight of a polybutadiene rubber having a cis-1,4 bond content of at least 60% and synthesized using a rare-earth catalyst, 0.1 to 5 parts by weight of an organosulfur compound, an unsaturated carboxylic acid or a metal salt thereof, and an inorganic filler. The solid core has a deformation, when compressed under a final load of 130 kgf from an initial load of 10 kgf, of 2.0 to 4.0 mm, and has a specific hardness distribution. The cover layer is formed by injection molding a single resin blend composed primarily of (A) a thermoplastic polyurethane and (B) a polyisocyanate compound, which resin blend contains a polyisocyanate compound in at least some portion of which all the isocyanate groups on the molecule remain in an unreacted state, and has a thickness of 0.5 to 2.5 mm, a Shore D hardness at the surface of 50 to 70. The golf ball has a deformation, when compressed under a final load of 130 kgf from an initial load of 10 kgf, of 2.0 to 3.8 mm. The solid golf ball is advantageous overall in competitive use. | 12-18-2008 |
20080318709 | GOLF BALL - A golf ball which is formed from a vulcanized rubber compound composed of 100 parts by weight of a rubber base material, 10 to 60 parts by weight of an unsaturated carboxylic acid and/or a metal salt thereof, 0.1 to 5 parts by weight of an organosulfur compound, 5 to 80 parts by weight of an inorganic filler, and 0.1 to 3 parts by weight of an organic peroxide, the rubber base material being composed of a first polybutadiene accounting for 50 to 95 wt % and a second polybutadiene accounting for 5 to 50 wt %, both polybutadiene being synthesized by using a rare earth element-based catalyst, the first polybutadiene containing no less than 60 wt % of cis-1,4 bonds and having a Mooney viscosity (ML1+4 (100° C.)) no lower than 50 and the second polybutadiene containing no less than 60 wt % of cis-1,4 bonds and having a Mooney viscosity (ML1+, (100° C.)) no higher than 45. The golf ball is characterized by good rebound resilience and good workability with which it is produced. | 12-25-2008 |
20090011856 | LOW COMPRESSION, RESILIENT GOLF BALLS WITH RUBBER CORE - A low compression, resilient golf ball having a center including a material formed from the conversion reaction of sufficient amounts of polybutadiene, a free radical source, and a cis-to-trans catalyst to convert a portion of cis-isomer to trans-isomer in the polybutadiene, wherein said material has an amount of trans-isomer greater than the amount of trans-isomer present before the conversion reaction, and wherein the reaction product includes low levels or substantially no antioxidant. | 01-08-2009 |
20090054175 | Golf ball | 02-26-2009 |
20090124412 | GOLF BALL - The present invention relates to a golf ball having a ball component made of a material molded under heat from a rubber composition which includes:
| 05-14-2009 |
20090221385 | GOLF BALL MATERIAL, GOLF BALL AND METHOD FOR PREPARING GOLF BALL MATERIAL - A golf ball material composed of (A) an oxygen-containing inorganic metal compound in the form of a particulate or a master batch capable of neutralizing at least some of the acid groups in an acid-containing polymer blend, (B) one or more polymer selected from among diene polymers, thermoplastic polymers and thermoset polymers, and (C) an acid-containing polymer is prepared by mixing component A in a blend of components B and C. The golf ball material has a good heat resistance, flowability and processability, and can be used to produce high-performance golf balls having durability, scuff resistance and optimal hardness without a loss of rebound. | 09-03-2009 |
20090253534 | GOLF BALL MATERIAL, GOLF BALL AND METHOD FOR PREPARING GOLF BALL MATERIAL - The invention provides golf ball materials which include, in admixture, (A) an oxygen-containing inorganic metal compound, (B) one or more polymers selected from the group consisting of multi-component polyamides, and (C) an acid-containing polymer, and additionally includes, if the oxygen-containing inorganic metal compound (A) does not include a zinc cationic species, (D) a zinc ionomer. The invention also provides methods for preparing such golf ball materials, and golf balls made with the materials. The golf ball materials are multi-component polyamide blend compositions having an excellent flow and processability and a suitable hardness, making them ideal as materials for obtaining high-performance golf balls which are endowed with outstanding durability and scuff resistance without any loss in rebound resilience. | 10-08-2009 |
20090270200 | GOLF BALL MATERIAL AND GOLF BALL - The present invention provides a golf ball material which is a thermoplastic ionomer blend composition of an acid-containing ethylene-based terpolymer having a weight-average molecular weight Mw of at least about 100,000, an acid-containing ethylene-based copolymer and/or terpolymer having a Mw of about 1,500 to about 95,000, and a low-molecular-weight acid-containing compound having a molecular weight of up to about 1,000, at least some portion of which composition is neutralized. The golf ball material is soft and resilient, and has a good durability and improved moldability. | 10-29-2009 |
20090298616 | GOLF BALL MATERIAL, GOLF BALL AND METHOD FOR PREPARING GOLF BALL MATERIAL - The invention provides a golf ball material composed of (i) a non-ionomeric thermoplastic resin, (ii) an ionomeric resin and/or an acid-containing polymer which is the base resin of an ionomeric resin, and (iii) at least one compound selected from among N,N-dialkylaminoalkyl(meth)acrylamide, N,N-dialkylaminoalkyl(meth)acrylate and derivatives thereof. Methods for preparing such a material, and a golf ball which includes as a component therein a molded part made of the golf ball material are also provided. The golf ball material has a good thermal stability, flow and processability, and can thus be used to obtain high-performance golf balls having an excellent rebound resilience, an outstanding durability and a good flexibility. | 12-03-2009 |
20100022329 | RUBBER COMPOSITIONS COMPRISING BENZOQUINONES AND THE USE THEREOF IN GOLF BALLS - The present invention is directed to a golf ball having at least one layer formed from a rubber composition comprising a base rubber, at least 0.05 parts by weight of a free radical initiator, per 100 parts of the base rubber, and at least 0.1 parts by weight of a benzoquinone, per 100 parts of the base rubber. The rubber composition may be present in any one or more of a core layer, a cover layer, or an intermediate layer. | 01-28-2010 |
20100069173 | GOLF BALL - An object of the present invention is to provide a golf ball excellent in fluidity, adhesion of the paint film, and repulsion. Another object of the present invention is to provide a golf ball which is excellent in durability and low-temperature durability. The present invention provides a golf ball comprising: a core and a cover covering the core, wherein the cover is formed from a cover composition that contains as a resin component, (a) a specific high melt viscosity ionomer resin being neutralized with at least two metal ions, and (b) a low melt viscosity ionomer resin being neutralized with at least two metal ions, in a ratio of (a) the high melt viscosity ionomer resin/(b) the low melt viscosity ionomer resin being 55 mass % to 99 mass %/45 mass % to 1 mass %, wherein at least one of metal ions neutralizing carboxyl groups of (a) the high melt viscosity ionomer resin and/or (b) the low melt viscosity ionomer resin is a divalent metal ion and a content of the divalent metal ion per 100 g of the resin component is at least 0.020 mole. | 03-18-2010 |
20100075777 | GOLF BALL - An object of the present invention is to provide a resin composition for the golf ball that suppresses the bleed out of the low molecular weight material component, as well as improves the fluidity and repulsion performance. The present invention provides a golf ball forming resin composition comprising as a resin component, (A) a high melt viscosity resin; (B) a low melt viscosity ionomer resin having a melt viscosity (190° C.) ranging from 1 Pa·s to 10 Pa·s measured by a brookfield viscometer, in a ratio of (A) the high melt viscosity resin/(B) the low melt viscosity ionomer resin being 55 mass % to 99 mass %/45 mass % to 1 mass %; and (C) a metal ion source capable of neutralizing carboxyl groups of (A) the high melt viscosity resin and (B) the low melt viscosity ionomer resin, in an amount of from 0.1 part to 10 parts with respect to 100 parts by mass of a sum of (A) the high melt viscosity resin and (B) the low melt viscosity ionomer resin. | 03-25-2010 |
20100087274 | GOLF BALL WITH VERY LOW COMPRESSION AND HIGH COR - A golf ball having a very low compression and a high COR is disclosed herein. The core preferably comprises a single neodymium-catalyzed polybutadiene, and has a diameter ranging from 1.575 inch to 1.62 inch with a compression ranging from 20 to 45. The cover preferably has a thickness ranging from 0.038 inch to 0.045 inch, and a Shore D hardness ranging from 50 to 58. The golf ball preferably has a coefficient of restitution of at least 0.780, and a compression ranging from 35 to 50. | 04-08-2010 |
20100125001 | GOLF BALL MATERIAL, GOLF BALL AND METHOD FOR PREPARING GOLF BALL MATERIAL - The present invention provides a golf ball material which is made of an ionomer composition that includes a phenolic resin component. The invention provides also a golf ball composed of a core and a cover layer, or a core, a cover layer and at least one intermediate layer therebetween, wherein the golf ball material is used in at least one layer of the core or cover. The invention additionally provides a method for preparing the golf ball material by using (i) or (ii) below:
| 05-20-2010 |
20100160078 | MODIFIED IONOMER COMPOSITION - The present invention relates to golf balls and golf ball components comprising a blend of one or more ionomers mixed with one or more metal or ammonium salts of chelating agent. The resulting modified ionomer compositions have improved processability as shown by the increase in melt flow index (I2) as compared to the unmodified ionomer analogs while demonstrating an increase in resiliency or speed as shown by increasing COR, while maintaining or showing only a slight increase in hardness as measured by Shore D. | 06-24-2010 |
20100173726 | GOLF BALL HAVING REDUCED SURFACE HARDNESS - A golf ball comprising a core and a cover, the core comprising an outer surface and a geometric center, the outer surface being treated with and comprising a fatty acid and/or fatty acid salt composition, the outer surface further having a first hardness and the geometric center having a second hardness, wherein the first hardness is the same as or different than the second hardness. | 07-08-2010 |
20100173727 | GOLF BALL HAVING REDUCED SURFACE HARDNESS - A golf ball comprising a core and at least one cover layer disposed about the core, the core comprising a geometric center and an outer surface, the core further comprising an untreated region extending radially from the geometric center a predetermined distance D | 07-08-2010 |
20100222156 | GOLF BALL HAVING REDUCED SURFACE HARDNESS - The invention is directed to a golf ball comprising a core comprising at least one layer, a cover disposed about the core, the cover comprising at least one cover layer comprising a cover inner surface and a cover outer surface, the cover layer further comprising a treated cover region and an untreated cover region, the treated cover region extending inward from the cover outer surface a depth D | 09-02-2010 |
20100240468 | GOLF BALLS CONTAINING HIGHLY NEUTRALIZED ACID POLYMERS AND SUGAR ESTER HLB MODIFIERS - A golf ball comprising a core and a cover layer surrounding the core, where at least one of the core and the cover layer includes a polymer composition of a highly neutralized acid polymer and a sugar ester HLB modifier such that the sugar ester HLB modifier is present from about 15 wt % to about 40 wt % of the polymer composition. | 09-23-2010 |
20100261551 | LOW LIFT GOLF BALL - A golf ball having a plurality of dimples formed on its outer surface, the outer surface of the golf ball being divided into plural areas comprising at least first areas containing a plurality of first dimples and second areas containing a plurality of second dimples, the areas together forming a spherical polyhedron shape, the first dimples comprising spherical dimples having a first, spherical chord depth and the second dimples comprising truncated spherical dimples having a second, truncated chord depth, and the second dimples are of larger radius than the first dimples and have a truncated chord depth which is less than the spherical chord depth of the first dimples. | 10-14-2010 |
20100298066 | COMPOSITION FOR USE IN GOLF BALLS AND SPORTS EQUIPMENT - Disclosed embodiments involve a novel blend composition for use in sports equipment, particularly for use in golf ball manufacture. The composition comprises three components, (A), (B), and (C). Component (A) can be selected from polymer(s) comprising an ethylene moiety and one or more unsaturated carboxylic acid, sulfonic acid, or phosphoric acid groups. Component (B) is a compound having a formula (R | 11-25-2010 |
20110009212 | GOLF BALLS HAVING LAYERS MADE FROM RUBBER COMPOSITIONS CONTAINING NUCLEATING AGENTS - Golf balls containing at least one layer made from a rubber composition comprising a benzenetrisamide nucleating agent are provided. The rubber composition preferably contains a free-radical initiator agent, cross-linking agent, and fillers along with the base rubber and nucleating agent. Golf balls of various constructions may be made including two-piece, three-piece, and four-piece balls. The composition is used preferably to form a golf ball core having improved resiliency, durability, toughness, and impact strength. | 01-13-2011 |
20110065529 | METHOD FOR PREPARING GOLF BALL AND GOLF BALL - The present invention provides a method of manufacturing a golf ball having a solid core formed of a rubber composition and a cover of at least one layer encasing the core, which method includes the steps of treating a surface of the core with a solution containing a halogenated isocyanuric acid and/or a metal salt thereof, and covering the treated core with a cover material. The invention also provides a golf ball obtained by such a method. Golf balls obtained by this method have a good feel and a good scuff resistance, and also have a high durability to impact. | 03-17-2011 |
20110086729 | MOLDED POLYMER MATERIAL AND GOLF BALL - The invention provides a molded polymer material which is obtained by subjecting a polymer composition that includes (A) at least one polymer containing α,β-ethylenically unsaturated carboxylic acid, (B) at least one diene polymer, (C) at least one metal cation source, and (D) at least one organic peroxide, and has a chemical structure arrived at by neutralizing some or all of the carboxyl groups in component A with component C in the presence of component B, to molding and crosslinking under the influence of radicals generated by decomposing component D. The molded polymer material has a high resilience, a high hardness and a good durability, making it well-suited for use in golf balls. | 04-14-2011 |
20110130216 | GOLF BALL CONSTRUCTS AND RELATED SYSTEMS - Golf balls and systems for applying one or more polymer layers to a golf ball construct are disclosed. As but one example of disclosed systems, methods for injection molding a golf ball cover surrounding a core and having a maximum wall thickness of about 0.030 inch are disclosed. In but one example of such methods, a viscous polymer can be injected into a mold defining a cavity. A core portion or mantle portion of a golf ball can be substantially centered relative to the cavity. A plurality of spaced-apart radial film gates can be circumferentially positioned relative to the cavity. The viscous polymer can be conveyed into the cavity through the plurality of radial film gates and into a volume defined between the core portion or mantle portion and the mold so as to form a substantially uniformly distributed polymer layer. The polymer layer can solidify. A golf ball construct can be removed from the mold cavity. In some implementations, the golf ball construct comprises an outer cover of a golf ball. | 06-02-2011 |
20110130217 | GOLF BALL WITH VERY LOW COMPRESSION AND HIGH COR - A golf ball having a very low compression and a high COR is disclosed herein. The core preferably comprises a single neodymium-catalyzed polybutadiene, and has a diameter ranging from 1.575 inch to 1.62 inch with a PGA compression ranging from 20 to 45. The cover preferably has a thickness ranging from 0.038 inch to 0.045 inch, and a Shore D hardness ranging from 50 to 58. The golf ball preferably has a coefficient of restitution of at least 0.780, and a PGA compression ranging from 35 to 50. | 06-02-2011 |
20110136587 | GOLF BALLS COMPRISING THERMOPLASTIC OR THERMOSET COMPOSITION HAVING CONTROLLED GEL TIME - A golf ball comprising a core and at least one layer disposed about the core, wherein at least one of the core and the layer comprises a thermoplastic or thermoset composition comprising a reaction product of a polyurethane or polyurea prepolymer comprising at least one isocyanate and a curative comprising a blend of at least one aliphatic diamine and at least one polyaspartic ester formed from reactants comprising at least one aliphatic primary polyamine and at least one maleic or fumaric diester, and wherein the thermoplastic or thermoset composition comprises a gel time of about 90 seconds or greater. Also, a golf ball comprising a core and at least one layer disposed about the core wherein at least one of the core and the layer comprises a thermoplastic or thermoset composition T comprising a reaction product of a polyurethane or polyurea prepolymer P comprising at least one isocyanate and a curative C comprising a blend of at least one aliphatic diamine D and at least one polyaspartic ester formed from reactants comprising at least one aliphatic primary polyamine and at least one maleic or fumaric diester, wherein the thermoplastic or thermoset composition T has a gel time X such that X>1.25Y, and wherein Y is the gel time of a thermoplastic or thermoset composition T′ comprising a reaction product of the polyurethane or polyurea prepolymer P and a curative C′ comprising a blend of aliphatic diamine D and a polyaspartic ester consisting of N,N′-diethylmaleate-2-methyl-pentamethylene diamine. | 06-09-2011 |
20110207554 | MULTIPLE-PIECE GOLF BALL - A multiple-piece golf ball includes a core positioned at the center of the golf ball; an intermediate layer surrounding the core; a cover further surrounding the intermediate layer; at least one high specific gravity member having a higher specific gravity than the core, the intermediate layer and the cover. The at least one high specific gravity member is arranged such that a moment of inertia of the golf ball with respect to an x-axis Ix and a moment of inertia of the golf ball with respect to a y-axis Iy are substantially the same, a moment of inertia of the golf ball with respect to a z-axis Iz is greater than Ix and Iy, and the difference between Iz and Ix or Iy is at least approximately 3. The x-axis, y-axis, and z-axis intersect orthogonally at the center of the golf ball. | 08-25-2011 |
20110244984 | GOLF BALL COMPRISING RENEWABLE RESOURCE COMPONENT - The invention is directed to a golf ball comprising a core and a cover, wherein at least one of the core and the cover comprises about 10 wt % or greater of a renewable polymer composition comprising an ultra high molecular weight polyhydroxyalkanoate compound having the formula: | 10-06-2011 |
20110287860 | MULTI-LAYER CORE GOLF BALL HAVING THERMOSET RUBBER COVER - A golf ball with one or more thermosetting rubber core layers, intermediate layers and cover layers. At least one of the ball's layers has a moisture vapor barrier property, and the thermosetting rubber layers follow a cis- or a trans-polybutadiene gradient from the center of the ball to its cover. Each of the core layer, intermediate layer and cover layer comprises a cross-linked thermoset rubber composition having a primary rubber component of polybutadiene having a polydispersity of no greater than about 2 or a weight average molecular weight M | 11-24-2011 |
20120010021 | GOLF BALL - An object of the present invention is to provide a golf ball traveling a greater distance by improving the properties of the spherical core. The present invention provides a golf ball comprising a spherical core, and at least one cover layer covering the spherical core, wherein the spherical core is formed from a rubber composition containing a base rubber, a co-crosslinking agent, a crosslinking initiator, a filler and a polynuclear aromatic organic sulfur compound or a derivative thereof, and the spherical core has a specific hardness distribution without decreasing hardness from a central point toward a surface of the spherical core in JIS-C hardness. | 01-12-2012 |
20120046124 | GOLF BALLS CONTAINING VISIBLE DECORATIVE INSERTS ENCLOSED IN TRANSPARENT LAYERS - Golf balls containing a composite layer comprising a substantially transparent polymeric matrix with at least one embedded decorative insert member (for example, charm or jewelry piece) are provided. The ball further includes a core that may comprise a reflective material such as white pigment. A cover structure comprising a second substantially transparent polymeric matrix surrounds the composite layer. The decorative insert can be seen through the layers. Various light-reflective fillers, color pigments, and dyes may be added to the layers to create different optical effects. The resulting ball has an aesthetically pleasing appearance while maintaining its good playing performance properties. | 02-23-2012 |
20120046125 | GOLF BALLS CONTAINING VISIBLE DECORATIVE INSERTS PLACED BETWEEN TRANSPARENT LAYERS - Golf balls containing a core having at least one layer; a composite layer comprising a first substantially transparent polymeric matrix; and a cover comprising a second substantially transparent polymeric matrix are provided. The ball contains at least one decorative insert member that can be seen through the layers. The decorative insert (for example, charm or jewelry piece) is sandwiched between the composite and cover layers. One portion of the insert is embedded in each layer. Light-reflective fillers, colored pigments, and dyes may be added to the layers to create different optical effects. The resulting ball has a unique and appealing appearance while maintaining its good playing properties. | 02-23-2012 |
20120071271 | PHASE TRANSITION GOLF BALL AND METHOD OF USE - A phase transition golf ball comprises a phase transition material. The phase transition material may optionally include a microwave susceptor or an induction susceptor. The phase transition material preferably comprises an ethylene acid copolymer, or an ionomer of an ethylene acid copolymer. The performance of the phase transition golf ball, for example its hardness or compression, is adjusted by inducing a complete or partial phase transition in the phase transition material. The extent of the adjustment in performance is correlated with the extent of the phase transition. Preferably, the phase transition is reversible and repeatable and takes place at temperatures that might be achieved through the use of common household appliances. Also preferably, the phase transition material returns to its original state over an extended period, for example hours or days. | 03-22-2012 |
20120077620 | GOLF BALL WITH VERY LOW COMPRESSION AND HIGH COR - A golf ball having a very low compression and a high COR is disclosed herein. The core preferably comprises a single neodymium-catalyzed polybutadiene, and has a diameter ranging from 1.575 inch to 1.62 inch with a compression ranging from 20 to 45. The cover preferably has a thickness ranging from 0.038 inch to 0.045 inch, and a Shore D hardness ranging from 50 to 58. The golf ball preferably has a coefficient of restitution of at least 0.780, and a compression ranging from 35 to 50. | 03-29-2012 |
20120088603 | USE OF NUCLEATING AGENTS TO INCREASE THE FLEXURAL MODULUS OF IONOMERS - A golf ball composition having a copolymer with an acid content modified by a nucleating agent is described. The nucleating agent modifies the flexural modulus of the acid copolymer and is preferably selected from the group consisting of sodium succinate, sodium glutarate, sodium caproate, sodium 4-methylvalerate, aluminum phenyl acetate, sodium cinnamate, and combinations thereof. | 04-12-2012 |
20120115639 | GOLF BALL COMPOSITIONS - Disclosed herein are hard and flexible compositions, i.e., compositions which have a flexural modulus that is less than the value that is expected based on the composition's hardness. The compositions preferably have a hardness/modulus relationship represented by the formula | 05-10-2012 |
20120122609 | GOLF BALL MATERIAL AND GOLF BALL - A golf ball material composed of a polymer material that contains spherical inorganic particulates, which is well adapted for use in at least one component of a golf ball composed of one or more layers. The golf ball material of the invention improves the flight performance of golf balls compared with polymer materials containing amorphous inorganic particulates. | 05-17-2012 |
20120129629 | GOLF BALL - A golf ball includes, as a constituent element thereof, a molded and crosslinked product obtained from a rubber composition containing (A) a base rubber which includes a polybutadiene having a cis-1,4 bond content of at least 60 wt %, (B) an unsaturated carboxylic acid and/or a metal salt thereof, (C) an organosulfur compound, (D) one or more organic peroxide selected from the group consisting of peroxyketals and/or dialkyl peroxides, and (E) one or more organic peroxide selected from the group consisting of hydroperoxides. In the golf ball, the value obtained by subtracting a center hardness of the molded and crosslinked product from a surface hardness thereof, expressed as the JIS-C hardness, is at least 20. The golf ball has a reduced spin rate on shots with a driver and therefore is able to follow a reliable trajectory that does not tend to dip or to rise in a high arc, enabling an increased distance to be achieved. | 05-24-2012 |
20120142453 | GOLF BALL - An object of the present invention is to provide a golf ball excellent in flying performance, in particular, to provide a golf ball traveling a great flight distance. The present invention provides a golf ball having a spherical core and at least one cover layer covering the spherical core, wherein the spherical core is formed from a rubber composition containing (a) a base rubber, (b) an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or a metal salt thereof as a co-crosslinking agent, (c) a crosslinking initiator, and (d) a carboxylic acid, provided that the rubber composition further contains (e) a metal compound in the case of containing only (b) the α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms as the co-crosslinking agent. | 06-07-2012 |
20120157231 | GOLF BALL LAYERS BASED ON IONOMERS MADE WITH POLYALKENAMER CARRIERS - Golf balls containing a core having at least one layer and cover having at least one layer are provided. A thermoplastic ionomeric composition is used to form at least one layer of the ball. The composition is prepared by providing a masterbatch comprising cycloalkene (polyalkenamer) rubber and neutralizing agent and mixing the masterbatch with ethylene acid copolymer. The acid groups are neutralized to 30 weight percent or greater, preferably 50% or greater, and more preferably 70% or greater. The resulting ball has high resiliency and rebounding properties along with a soft feel. | 06-21-2012 |
20120157232 | MODIFICATION OF ACIDIC POLYMERS USING AMINOALCOHOLS - In one embodiment, there is disclosed a golf ball comprising a core and at least one layer, wherein at least the core or the layer includes a reaction product of an acidic polymer and an aminoalcohol. In another embodiment, there is disclosed a golf ball comprising a core and at least one layer, wherein at least the core or the layer includes a polyurethane ionomer made by reacting a hydroxyl-functional acidic polymer with an isocyanate, wherein the hydroxyl-functional acidic polymer is a reaction product of an acidic polymer and an aminoalcohol. In a further embodiment, there is disclosed a golf ball comprising a core and at least one layer, wherein at least the core or the layer includes a composition made from: (a) a reaction product of an acidic polymer and an aminoalcohol; and (b) at least one additional material. | 06-21-2012 |
20120165119 | GOLF BALL RESIN COMPOSITION AND GOLF BALL - The present invention provides a golf ball resin composition comprising (A) at least one resin component selected from the group consisting of (a-1) a binary copolymer composed of an olefin and an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms, (a-2) an ionomer resin consisting of a metal ion-neutralized product of a binary copolymer, (a-3) a ternary copolymer composed of an olefin, an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and an α,β-unsaturated carboxylic acid ester, and (a-4) an ionomer resin consisting of a metal ion-neutralized product of a ternary copolymer; and (B) an anionic surfactant containing sulfur. The present invention further provides a golf ball comprising a constituting member formed from the above golf ball resin composition. | 06-28-2012 |
20120165120 | GOLF BALL RESIN COMPOSITION AND GOLF BALL - An object of the present invention is to provide a golf ball resin composition excellent in resilience. Another object of the present invention is to provide a golf ball excellent in a shot feeling and resilience. The present invention provides a golf ball resin composition having the spin-lattice relaxation time (T | 06-28-2012 |
20120165121 | GOLF BALL RESIN COMPOSITION AND GOLF BALL - An object of the present invention is to provide a golf ball resin composition excellent in resilience. Another object of the present invention is to provide a golf ball excellent in a shot feeling and resilience. The golf ball resin composition of the present invention is characterized in that a storage modulus E′ (Pa) and a loss modulus E″ (Pa) satisfy a following expression; | 06-28-2012 |
20120165122 | GOLF BALL COMPOSITION - The present invention relates to golf ball where at least one of the outer cover layer and the intermediate layer (if present) includes a blend composition of about 2 to about 40 wt % of a polyamide and about 60 to about 98 wt % of one or more of either a block copolymer, an acidic copolymer; an acidic terpolymer; an ionomer, or a multi component blend composition (“MCBC”); and where the polyamide has a melting point which is greater than about 5 and less than about 200° C. above the melting point of the other blend component. | 06-28-2012 |
20120172149 | GOLF BALL - An object of the present invention is to provide a golf ball having a low spin rate on driver shots and excellent in flight distance performance. The present invention provides a golf ball having a spherical core and at least one cover layer covering the spherical core, wherein the spherical core is formed from a rubber composition containing (a) a base rubber, (b) an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or a metal salt thereof as a co-crosslinking agent, (c) a crosslinking initiator, and (d) a salt of a carboxylic acid, provided that the rubber composition further contains (e) a metal compound in the case of containing only (b) the α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms as the co-crosslinking agent. | 07-05-2012 |
20120172150 | GOLF BALL - An object of the present invention is to provide a golf ball having a great flight distance on driver shots. The present invention provides a golf ball having a spherical core and at least one cover layer covering the spherical core, wherein when JIS-C hardness, which is measured at nine points obtained by dividing a radius of the spherical core into equal parts having 12.5% intervals therebetween, is plotted against distance (%) from a core center, the spherical core is such that R | 07-05-2012 |
20120172151 | GOLF BALL - An object of the present invention is to provide a golf ball traveling a great distance of a driver shot. The present invention provides a golf ball having a spherical core and at least one cover layer covering the spherical core, wherein the spherical core is formed from a rubber composition containing (a) a base rubber, (b) an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or a metal salt thereof as a co-crosslinking agent, (c) a crosslinking initiator, (d) a carboxylic acid and/or a salt thereof, and (e) an organic sulfur compound having a naphthalene ring, provided that the rubber composition further contains (e) a metal compound in the case of containing only (b) the α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms as the co-crosslinking agent. | 07-05-2012 |
20120302372 | GOLF BALLS INCORPORATING CERIUM OXIDE NANOPARTICLES - The invention is directed to a golf ball providing improved UV resistance, abrasion resistance and hydrophobicity comprising cerium oxide nanoparticles having a particle size within the wavelength of visible light. The golf ball of the invention may comprise the cerium oxide nanoparticles in any or all of outer core layers, intemiediate layers, inner cover layers, outer cover layers and even as a coating composition in an amount of from about 0.5 wt % to about 10 wt % of the respective layer. The cerium oxide nanoparticles may be randomly dispersed within a layer or coating, or alternatively, the cerium oxide nanoparticles may be ordered in an array within the layer or coating. | 11-29-2012 |
20120329573 | GOLF BALLS CONTAINING IONOMERS AND POLYAMINES OR TERTIARY POLYAMIDES - Provided herein are compositions comprising an ionomer and a polyamine or a tertiary polyamide. The polyamine and the tertiary polyamide have a molecular weight of greater than 500 Da and do not contain an ester moiety or a primary amine moiety. The polyamine comprises at least three moieties that are tertiary amines or hindered secondary amines, and the polyamide comprises tertiary amide moieties and no secondary or primary amide moieties. The compositions may optionally include a filler. Further provided are articles such as golf balls and films containing these compositions. | 12-27-2012 |
20120329574 | GOLF BALL - An object of the present invention is to provide a golf ball showing a great flight distance on driver shots. The present invention provides a golf ball comprising a spherical core and at least one cover layer covering the spherical core, wherein the spherical core is formed from a rubber composition containing (a) base rubber, (b) an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or a metal salt thereof as a co-crosslinking agent, (c) a crosslinking initiator and (d) a carboxylic acid having 1 to 14 carbon atoms, provided that the rubber composition further contains (e) a metal compound in case of containing only (b) the α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms as the co-crosslinking agent. | 12-27-2012 |
20120329575 | GOLF BALL - An object of the present invention is to provide a golf ball showing a great flight distance on driver shots. The present invention provides a golf ball comprising a spherical core and at least one cover layer covering the spherical core, wherein the spherical core is formed from a rubber composition containing (a) base rubber, (b) an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or a metal salt thereof as a co-crosslinking agent, (c) a crosslinking initiator and (d) a salt of a carboxylic acid having 1 to 13 carbon atoms, provided that the rubber composition further contains (e) a metal compound in case of containing only (b) the α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms as the co-crosslinking agent. | 12-27-2012 |
20130005505 | GOLF BALL - A golf ball | 01-03-2013 |
20130012335 | GOLF BALL RESIN COMPOSITION AND GOLF BALL - An object of the present invention is to provide a soft golf ball resin composition excellent in the shot feeling and resilience. The present invention provides a golf ball resin composition comprising: (A) 100 parts by mass of at least one resin component selected from the group consisting of (a-1) a binary copolymer, (a-2) a binary ionomer resin, (a-3) a ternary copolymer, and (a-4) a ternary ionomer resin, (B) 1 part to 25 parts by mass of a phosphate ester and/or a salt thereof; and (C) 0 part to 200 parts by mass of a basic inorganic metal compound. The golf ball of the present invention comprises a constituent member formed from the golf ball resin composition. | 01-10-2013 |
20130012336 | GOLF BALL - A golf ball | 01-10-2013 |
20130012337 | COMPOSITIONS FOR SPORTS EQUIPMENT - Compositions comprising the reaction product of:
| 01-10-2013 |
20130017905 | GOLF BALLAANM SHINDO; AyakaAACI Kobe-shiAACO JPAAGP SHINDO; Ayaka Kobe-shi JPAANM Mikura; ChiemiAACI Kobe-shiAACO JPAAGP Mikura; Chiemi Kobe-shi JPAANM Kurihara; ShunAACI Kobe-shiAACO JPAAGP Kurihara; Shun Kobe-shi JPAANM Fushihara; KazuhisaAACI Kobe-shiAACO JPAAGP Fushihara; Kazuhisa Kobe-shi JP - An object of the present invention is to provide a golf ball showing a great flight distance on driver shots. The present invention provides a golf ball comprising a spherical core and at least one cover layer covering the spherical core, wherein the spherical core is formed from a rubber composition containing (a) base rubber, (b) an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or a metal salt thereof as a co-crosslinking agent, (c) a crosslinking initiator and (d) a branched carboxylic acid and/or a salt thereof, provided that the rubber composition further contains (e) a metal compound in case of containing only (b) the α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms as the co-crosslinking agent. | 01-17-2013 |
20130017906 | MODIFIED IONOMER COMPOSITION - The present invention relates to golf balls and golf ball components comprising a blend of one or more ionomers mixed with one or more metal or ammonium salts of chelating agent. The resulting modified ionomer compositions have improved proccessability as shown by the increase in melt flow index ( | 01-17-2013 |
20130053179 | GOLF BALL - A golf ball includes a spherical core and a cover covering the spherical core, wherein the cover is formed from a polyurethane composition containing a polyurethane elastomer as a resin component, the polyurethane composition has a shear loss modulus G″ of more than 5.03×10 | 02-28-2013 |
20130072322 | COMPOSITIONS FOR GOLF BALLS BASED ON ORIENTED NANOSTRUCTURES - Multi-piece golf balls having at least one component made of a rubber composition comprising substantially oriented nanostructures are provided. For example, the nanostructures may be in the form of nanofibers, nanorods, nanotubes, and nanoparticles. The multi-piece golf ball contains a core, which may have a dual-core construction including a center and surrounding outer core layer or other multi-layered structure. Preferably at least one of the core layers is formed from a polybutadiene rubber composition comprising the nanostructures. The polybutadiene rubber may be chemically or non-chemically modified. The polybutadiene preferably has a cis-bond content of at least 80%. | 03-21-2013 |
20130095955 | SOLID GOLF BALL - The invention provides a solid golf ball having a core and a cover, the core being formed of a rubber composition containing a base rubber, a co-crosslinking agent, a crosslinking initiator and a metal oxide. The base rubber is a mixture of polybutadiene and a styrene-butadiene rubber, the styrene-butadiene rubber having a styrene bond content of not more than 35 wt %. The co-crosslinking agent is methacrylic acid. The core deflection under specific loading and the VR value for dimples on the ball surface are set within specific ranges. | 04-18-2013 |
20130137534 | RESIN COMPOSITION FOR GOLF BALL AND GOLF BALL - Provided are a resin composition for a golf ball which is excellent in resilience, flexibility and fluidity, and a golf ball excellent in resilience and shot feeling. The present invention relates to a resin composition for a golf ball, including (A) a resin component and (B) a nonionic surfactant, the resin component (A) including at least one selected from the group consisting of (a-1) a binary copolymer of an olefin and a C | 05-30-2013 |
20130150185 | GOLF BALL COMPOSITION AND GOLF BALL - A golf ball having a good rebound and excellent flight performance can be obtained using a golf ball composition which contains a diene polymer having an aluminum catalyst residue content of not more than 650 ppm. | 06-13-2013 |
20130165262 | GOLF BALL CONTAINING CARBOXYLATED ELASTOMER - This invention pertains to a golf ball which includes a core, optionally one or more intermediate layers; and an outer cover layer, and where one or more of the outer cover or intermediate layers includes a carboxylated elastomer composition, which has an elastomer backbone and one or more pendant carboxy groups. | 06-27-2013 |
20130165263 | RESIN COMPOSITION FOR GOLF BALL AND GOLF BALL - The present invention provides a resin composition for a golf ball and a golf ball which have high resilience while maintaining soft compression and also have low spin on driver shots, and therefore can achieve a long flight distance. The present invention relates to a resin composition for a golf ball, including an ionomer resin consisting of a metal ion-neutralized copolymer of (A) a C | 06-27-2013 |
20130172106 | SOLID GOLF BALL - The invention provides a solid golf ball which has a core of at least one layer and a cover of at least one layer. At least one layer of the core is formed primarily of polybutadiene and includes at least 0.05 part by weight each of (I) a rubber powder obtained by granulating a rubber material containing acrylic acid or a metal salt of acrylic acid and (II) a polyurethane resin powder per 100 parts by weight of rubber component. At least one layer of the cover is formed primarily of polyurethane. | 07-04-2013 |
20130172107 | SOLID GOLF BALL - The invention provides a solid golf ball having a core and a cover. The core is formed of a rubber composition containing a base rubber, a co-crosslinking agent, a crosslinking initiator and a metal oxide. The co-crosslinking agent is methacrylic acid, and the rubber composition includes a specific waste material in the form of a powder. The core deflection and the cover material are optimized. Utilizing a waste material in a solid golf ball conserves resources and thus is beneficial to the global environment. Even during prolonged use, the golf ball maintains its basic performance attributes (feel, flight, durability) at a high level. | 07-04-2013 |
20130172108 | SOLID GOLF BALL - The invention provides a solid golf ball having a core and a cover. The core is formed of a rubber composition containing a base rubber, a co-crosslinking agent, a crosslinking initiator and a metal oxide. The base rubber contains polybutadiene, a styrene-butadiene rubber and, optionally, an isoprene rubber. The co-crosslinking agent is methacrylic acid, and the rubber composition includes a specific waste material in the form of a powder. The core deflection and the cover material are optimized. Utilizing a waste material in a solid golf ball conserves resources and thus is beneficial to the global environment. Even during prolonged use, the golf ball maintains its basic performance attributes (feel, flight, durability) at a high level. | 07-04-2013 |
20130172109 | GOLF BALL RESIN COMPOSITION AND GOLF BALL - An object of the present invention is to provide a golf ball resin composition excellent in shot feeling and resilience. The golf ball resin composition includes (A) at least one resin component selected from the group consisting of (a-1) a binary copolymer composed of an olefin and an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms, (a-2) an ionomer resin consisting of a metal ion-neutralized product of the binary copolymer components, (a-3) a ternary copolymer composed of the binary copolymer components and an α,β-unsaturated carboxylic acid ester, and (a-4) an ionomer resin consisting of a metal ion-neutralized product of the ternary copolymer components; and (B) a basic metal salt of a fatty acid, and having a storage modulus E′ (Pa) and a loss modulus E″ (Pa) satisfying a following expression; | 07-04-2013 |
20130172110 | GOLF BALL RESIN COMPOSITION AND GOLF BALL - An object of the present invention is to provide a golf ball excellent in a shot feeling and resilience. The present invention provides a golf ball resin composition comprising (A) at least one resin component selected from the group consisting of (a-1) a binary copolymer composed of an olefin and an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms, (a-2) an ionomer resin consisting of a metal ion-neutralized product of the binary copolymer, (a-3) a ternary copolymer composed of the binary copolymer components and an α,β-unsaturated carboxylic acid ester, and (a-4) an ionomer resin consisting of a metal ion-neutralized product of the ternary copolymer components; and (B) a basic metal salt of a fatty acid, and having a spin-lattice relaxation time (T1) of | 07-04-2013 |
20130172111 | GOLF BALL - An object of the present invention is to provide a golf ball having a low spin rate on driver shots. The present invention provides a golf ball comprising a spherical core and at least one cover layer covering the spherical core, wherein the spherical core is formed from a rubber composition containing (a) base rubber, (b) an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or a metal salt thereof as a co-crosslinking agent, (c) a crosslinking initiator and (d) a carboxylic acid having a benzene ring and/or a salt thereof, provided that the rubber composition further contains (e) a metal compound in case of containing only (b) the α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms as the co-crosslinking agent. | 07-04-2013 |
20130172112 | GOLF BALL RESIN COMPOSITION AND GOLF BALL - The present invention provides a golf ball resin composition comprising (A) an ionomer resin component and (B) a compound having an anionic part within a molecule thereof, wherein with respect to a metal ion contained in the golf ball resin composition, (A) the ionomer resin component and (B) the compound having the anionic part within the molecule thereof, following coordinate energies obtained by ab initio molecular orbital calculation method using a basis function B3LYP/6-31G(d) satisfy the following expression: 0.3≦(A−C)/(B−C)≦0.6, wherein coordinate energy A is the coordinate energy between the metal ion and the anionic part of (B) component, coordinate energy B is the coordinate energy between the metal ion and the carboxyl ion of (A) component, and coordinate energy C is the coordinate energy between the metal ion and the olefin of (A) the ionomer resin component. | 07-04-2013 |
20130178310 | GOLF BALL INCORPORATING IONOMERIC COMPONENT HAVING PROPERTY GRADIENTS - The present invention is directed to a golf ball comprising a core, a cover and optionally an intermediate layer disposed between the core and the cover, wherein at least one of the core, the at least one intermediate layer, and the cover comprises at least one of an ionomer and an acid copolymer and has at least one treated region that is treated with and comprises a reaction product of an organometallic composition and the at least one ionomer and/or acid copolymer, such that: the at least one treated region has an internal property gradient; or at least two treated regions, in tandem, have an external property gradient; or the at least one treated region and an untreated region, in tandem, have an external property gradient. | 07-11-2013 |
20130225327 | GOLF BALL - The invention provides a multi-piece solid golf ball having a core of at least one layer, a cover of at least two layers which includes an inner cover layer and an outermost cover layer, and a plurality of dimples formed on a surface of the ball. The thickness and Shore D hardness of the outermost cover layer are set in specific ranges, the thickness and Shore D hardness of the inner cover layer are set in specific ranges, and the ball surface has, as expressed in the Lab color system defined by JIS Z-8730, a lightness L value of at least 89, an a value of at least 2 but not more than 10, and a b value of −20 or above. The multi-piece solid golf ball of the invention increases the reddish coloring of a white golf ball, thereby enhancing the stylishness of the ball and improving the way the ball looks and feels to the golfer when it is played. | 08-29-2013 |
20130244810 | GOLF BALL - An object of the present invention is to provide a golf ball traveling a great flight distance on driver shots. The present invention provides a golf ball comprising a spherical core and at least one cover layer covering the spherical core, wherein the spherical core is formed from a rubber composition containing (a) base rubber, (b) an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or a metal salt thereof as a co-crosslinking agent, (c) a crosslinking initiator, (d) a carboxylic acid having 4 to 30 carbon atoms and/or a salt thereof, and (e) a halogen-substituted thiophenol and/or a metal salt thereof as an organic sulfur compound, provided that the rubber composition further contains (f) a metal compound in the case of containing only (b) the α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms as the co-crosslinking agent. | 09-19-2013 |
20130260915 | Golf Balls Including Dense High Acid Ionomers - Golf balls having one or more structural components that include a highly neutralized acid polymer with a high acid content and a uniformly increased density. The core of the golf ball may be made up of the highly neutralized acid polymer. The highly neutralized acid polymer may have desired hardness and flexural modulus values. The highly neutralized acid polymer enables the golf ball to provide consistent play characteristics. | 10-03-2013 |
20130260916 | Golf Ball With Deposited Layer - A golf ball with a deposited layer is disclosed. The deposited layer is not produced by a molding process, such as injection molding or compression molding. Instead, the deposition process is produced by another process, such as thermal spraying or sintering. The deposited layer may include partially fused particulate material. The deposited layer may be added to a golf ball design as one or more supplemental layers. The deposited layer may also be provided in a golf ball design as a substitute for one or more layers. A golf ball may further include a combination of one or more supplemental deposited layers and one or more substituted deposited layers. | 10-03-2013 |
20130296074 | GOLF BALL - The invention provides a golf ball having a core and a cover of at least one layer. The core is formed of a rubber composition which includes a polybutadiene-containing base rubber, an unsaturated carboxylic acid and/or a metal salt thereof, an organic peroxide and sulfur, and for which the value of [sulfur (mol)÷available active oxygen content in organic peroxide] is at least 0.01 and not more than 0.019. | 11-07-2013 |
20130303307 | GOLF BALL - The present invention provides a golf ball having a spherical core and at least one cover layer covering the spherical core, wherein the spherical core is formed from a rubber composition containing (a) a base rubber, (b) an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or a metal salt thereof as a co-crosslinking agent, (c) a crosslinking initiator, and (d) an acid and/or a salt thereof, provided that the rubber composition further contains (e) a metal compound in the case of containing only (b) the α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms as the co-crosslinking agent, wherein (d) the acid and/or the salt thereof has a relative solubility parameter to (a) the base rubber and (b) the α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or the metal salt thereof ranging from 0.45 to 1.10. | 11-14-2013 |
20130310196 | GOLF BALL - An object of the present invention is to provide a golf ball having a spherical core with an outer-hard inner-soft structure formed from a rubber composition excellent in kneading workability. Another object of the present invention is to provide a golf ball traveling a great flight distance on driver shots. The present invention provides a golf ball having a spherical core and at least one cover layer covering the spherical core, wherein the spherical core is formed from a rubber composition containing (a) a base rubber, (b) an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or a metal salt thereof as a co-crosslinking agent, (c) a crosslinking initiator, and (d) a basic metal salt of a fatty acid. | 11-21-2013 |
20130324311 | RUBBER COMPOSITION AND GOLF BALL - The invention provides a rubber composition having high rebound resilience measured by a rebound resilience evaluation method which is excellent in measurement accuracy and can sufficiently evaluate the difference in performance between samples. The invention also provides a golf ball formed from the rubber composition. The invention further provides a golf ball having excellent flight performance owing to good hardness distribution measured by a hardness evaluation method which is excellent in measurement accuracy and can sufficiently evaluate the difference in performance between samples. The invention relates to a rubber composition having a specific radius of gyration R | 12-05-2013 |
20130324312 | GOLF BALL AND METHOD FOR MANUFACTURING THE SAME - An object of the present invention is to provide a golf ball comprising a core formed from a rubber composition containing (d) a carboxylic acid and/or a salt thereof and traveling a great flight distance on driver shots. The present invention provides a golf ball comprising a spherical core and at least one cover layer covering the spherical core, wherein the spherical core is formed from a rubber composition containing (a) a base rubber, (b) an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or a metal salt thereof as a co-crosslinking agent, (c) a crosslinking initiator, (d) a carboxylic acid and/or a salt thereof and two or more kinds of (e) organic sulfur compounds, provided that the rubber composition further contains (f) a metal compound in case of containing only (b) the α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms as the co-crosslinking agent. | 12-05-2013 |
20140031145 | GOLF BALL RESIN COMPOSITION AND GOLF BALL - The invention provides a resin composition for golf balls having excellent resilience, flexibility and fluidity, and golf balls having excellent resilience and shot feel. The resin composition comprises: (A) at least one selected from the group consisting of (a-1) a binary copolymer of an olefin and a C | 01-30-2014 |
20140073455 | GOLF BALL - The invention provides a golf ball endowed with an improved distance and durability. The ball has a core and a cover, the core being formed of a rubber composition containing a base rubber, a co-crosslinking agent, a crosslinking initiator and a metal oxide. The co-crosslinking agent is methacrylic acid. The core has a hardness profile in which, letting (A) be the JIS-C hardness at the core surface, (B) be the JIS-C hardness at a position 2 mm in from the surface toward the center of the core, (C) be the JIS-C hardness at a position 5 mm in from the surface toward the center of the core, (D) be the JIS-C hardness at a position 10 mm in from the surface toward the center of the core, (E) be the JIS-C hardness at a position 15 mm in from the surface toward the center of the core, and (F) be the JIS-C hardness at the center of the core, (A) to (F) have specific hardnesses. | 03-13-2014 |
20140100058 | GOLF BALL - An object of the present invention is to provide a golf ball showing a great flight distance on driver shots. The present invention provides a golf ball comprising a spherical core and at least one cover layer covering the spherical core, wherein the spherical core is formed from a rubber composition containing (a) base rubber, (b) an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or a metal salt thereof as a co-crosslinking agent, (c) a crosslinking initiator and at least one compound of (d) thiobenzoic acids and/or salts thereof, provided that the rubber composition further contains (e) a metal compound in case of containing only (b) the α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms as the co-crosslinking agent, and the spherical core has a hardness difference (Hs-Ho) between a surface hardness (Hs) and a center hardness (Ho) thereof of 25 or more in JIS-C hardness. | 04-10-2014 |
20140113745 | GOLF BALLS HAVING A FOAM CENTER - Multi-layered golf balls containing a dual-core structure are provided. The core structure includes an inner core (center) comprising a foam composition, preferably foamed polyurethane. The outer core layer is preferably formed from a non-foamed composition selected from thermoset compositions and thermoplastic compositions. The core layers have different hardness and specific gravity levels. The specific gravity (density) of the foam inner core is preferably less than the density of the outer core layer. | 04-24-2014 |
20140187349 | GOLF BALL COMPOSITION AND GOLF BALL - The invention provides a golf ball composition containing an ionomer resin composition of: (A) one or more ionomer selected from the group consisting of an olefin-unsaturated carboxylic acid random copolymer and/or an olefin-unsaturated carboxylic acid-unsaturated carboxylic acid ester random copolymer, and a metal ion neutralization product of an olefin-unsaturated carboxylic acid random copolymer and/or a metal ion neutralization product of an olefin-unsaturated carboxylic acid-unsaturated carboxylic acid ester random copolymer; (B) a polyethylene; and (C) an organic peroxide. | 07-03-2014 |
20140187350 | GOLF BALL COMPOSITION AND GOLF BALL - The invention provides a golf ball composition containing an ionomer resin composition of: (A) one or more ionomer selected from the group consisting of an olefin-unsaturated carboxylic acid random copolymer and/or an olefin-unsaturated carboxylic acid-unsaturated carboxylic acid ester random copolymer, and a metal ion neutralization product of an olefin-unsaturated carboxylic acid random copolymer and/or a metal ion neutralization product of an olefin-unsaturated carboxylic acid-unsaturated carboxylic acid ester random copolymer; (B) a polyethylene; and (C) an organic peroxide. | 07-03-2014 |
20140206476 | GOLF BALL - An object of the present invention is to provide a golf ball showing a low spin rate on driver shots. The present invention provides a golf ball comprising a spherical core and at least one cover layer covering the spherical core, wherein the spherical core is formed from a rubber composition containing (a) a base rubber, (b) an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or a metal salt thereof as a co-crosslinking agent, (c) a crosslinking initiator and (d) a carboxylic acid having a heterocyclic ring and/or a salt thereof, provided that the rubber composition further contains (e) a metal compound in case of containing only (b) the α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms as the co-crosslinking agent. | 07-24-2014 |
20140213391 | GOLF BALL - An object of the present invention is to provide a golf ball showing a great flight distance on driver shots. The present invention provides a golf ball comprising a spherical core and at least one cover layer covering the spherical core, wherein the spherical core is formed from a rubber composition containing (a) base rubber, (b) an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or a metal salt thereof as a co-crosslinking agent, (c) a crosslinking initiator and (d) a mercaptocarboxylic acid derivative and/or a dithiodicarboxylic acid derivative. | 07-31-2014 |
20140274469 | PROCESS FOR MAKING THERMOPLASTIC GOLF BALL MATERIAL AND GOLF BALL WITH THERMOPLASTIC MATERIAL - A thermoplastic golf ball material is made by combining and reacting (a) an unneutralized copolymer of ethylene and at least one of acrylic acid and methacrylic acid, which has from about 5 to about 12 percent by weight acid monomer; (b) a metallocene-catalyzed copolymer of ethylene and octene; (c) an unsaturated fatty acid; and (d) a metal cation in an amount sufficient to neutralize from about 65 to about 90% of the acid groups, to produce an ionomeric thermoplastic material. The ionomeric thermoplastic material may be used in a core, a cover, or a layer between a core and a cover of a golf ball. | 09-18-2014 |
20140274470 | GOLF BALL COMPOSITIONS - The present invention relates to a golf ball including a core, one or more mantle layers and an outer cover layer, and one or more of the core, one or more mantle layers or outer cover layer includes a partially hydrogenated polybutadiene having a viscosity at 200° C. of less than about 5,000 Pa-sec and a storage modulus (G′) at 1 Hz and 25° C. of greater than about 1×10 | 09-18-2014 |
20140295994 | GOLF BALL - An object of the present invention is to provide a golf ball traveling a great flight distance on driver shots. The present invention provides a golf ball having a spherical core and at least one cover layer covering the spherical core, wherein the spherical core is formed from a rubber composition containing (a) a base rubber, (b) an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or a metal salt thereof as a co-crosslinking agent, (c) a specific organic peroxide, and (d) a carboxylic acid and/or a salt thereof, provided that the rubber composition further contains (e) a metal compound in the case of containing only (b) the α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms as the co-crosslinking agent. | 10-02-2014 |
20140315658 | POLYALKENAMER COMPOSITIONS AND GOLF BALLS PREPARED THEREFROM - A golf ball that includes (a) a core comprising a center; (b) an outer cover layer; and (c) one or more intermediate layers; wherein at least one of the core, the outer cover layer, or the intermediate layer comprises a composition that includes (i) at least one polyalkenamer and at least one polyamide or (ii) at least one polyalkenamer. A method for making a golf ball comprising a core, one or more intermediate layers and an outer cover layer is also disclosed, wherein the method includes forming a blend comprising at least one polyalkenamer rubber and at least one polyamide; and injection molding the blend into a spherical mold to form the intermediate or outer cover layer. Also disclosed is a polymer composition that includes at least one polyalkenamer and at least one thermoplastic copolyamide elastomer. | 10-23-2014 |
20140357407 | GOLF BALL - An object of the present invention is to provide a golf ball showing a great flight distance on driver shots. The present invention provides a golf ball comprising a spherical core and at least one cover layer covering the spherical core, wherein when JIS-C hardness of the spherical core is measured at points located at distances of 0% (core center), 37.5%, 75.0% and 100% (core surface) from the core center of the spherical core, a hardness difference (Hs−Ho) between a surface hardness (Hs) thereof and a center hardness (Ho) thereof is 20 or more, a ratio ((H | 12-04-2014 |
20140357408 | GOLF BALL AND METHOD FOR MANUFACTURING THE SAME - A method for manufacturing a golf ball showing a great flight distance on driver shots for includes the steps of: preparing a rubber composition containing a base rubber, an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or a metal salt thereof as a co-crosslinking agent, a crosslinking initiator and a carboxylic acid and/or a salt thereof; heat pressing the rubber composition at a press temperature ranging from t-40° C. to t-15° C. to mold a spherical core, wherein t ° C. is a one-minute half-life temperature of the crosslinking initiator; and forming at least one cover layer covering the spherical core. | 12-04-2014 |
20140364249 | GOLF BALLS HAVING FOAM INNER CORE AND THEMOPLASTIC OUTER CORE - Multi-piece golf balls containing a dual-core structure are provided. The core structure includes an inner core (center) comprising a foam composition, preferably foamed polyurethane. The outer core layer is preferably formed from a non-foamed thermoplastic composition such as ethylene acid copolymer ionomer. Preferably, the specific gravity (density) of the foam inner core is less than the density of the outer core layer. The ball further includes a cover of at least one layer and may include at least one casing layer. The core structure and resulting ball have relatively good resiliency. | 12-11-2014 |
20140371004 | SOLID GOLF BALL - The invention provides a solid golf ball which has a core of at least one layer and a cover of at least one layer. At least one layer of the core is formed primarily of polybutadiene and includes at least 0.05 part by weight of a polyurethane resin powder having an average particle size of not more than 2 mm per 100 parts by weight of rubber component. At least one layer of the cover is formed primarily of polyurethane. | 12-18-2014 |
20160074710 | GOLF BALL - The invention provides a golf ball having a core and a cover of one layer or a plurality of layers, the core being formed of a material molded under heat from a rubber composition which includes (A) a base rubber, (B) an organic peroxide, and (C) water and/or a metal monocarboxylate. The product P×E of the difference P (mol/m | 03-17-2016 |
20160114216 | GOLF BALL LAYERS PRODUCED USING CROSSLINKED HIGHLY-NEUTRALIZED POLYMER MATERIALS - The invention relates to golf balls having at least one layer formed from a highly-neutralized polymer material that has been crosslinked. In particular, the compositions of the invention include a highly-neutralized polymer, at least one crosslinking initiator, and at least one coagent. The invention also relates to methods of making the compositions and golf ball constructions that incorporate the compositions of the invention in at least a portion thereof. | 04-28-2016 |
20160199701 | GOLF BALL | 07-14-2016 |