Polyplastics Co., Ltd. Patent applications |
Patent application number | Title | Published |
20150367538 | GROOVED RESIN MOLDED PART - A grooved resin molded part which when joined to another molded part, can form a composite molded product having an enhanced strength. This part contains an inorganic filler and has multiple grooves formed by partially removing the resin, such that the filler is exposed in these grooves. The depth of the grooves may be at least one-half of the length of the grooves in the shorter direction. The filler may have a fibrous shape; and the longer direction of the filler may be different from that of the grooves. The part is obtained by subjecting a resin molded part containing the filler to laser irradiation or the like to form multiple grooves in which the filler is exposed. | 12-24-2015 |
20150299420 | CORONA-RESISTANT MEMBER, CORONA-RESISTANT RESIN COMPOSITION, AND METHOD FOR DEVELOPING CORONA RESISTANCE OF RESIN MOLDED ARTICLE - A corona resistant resin composition having sufficient resistance to corona discharge, and a corona resistant member are provided. This corona resistant member is formed by molding a corona-resistant resin composition obtained by melting and mixing at least a resin component and mica, and a mode diameter of the mica in the volume-based particle size distribution measured by a laser diffraction/scattering method after molding is 1 to 200 μm. For 100 parts by mass of the resin component, there are preferably 25-101 parts by mass of mica. | 10-22-2015 |
20150247034 | THERMOSETTING LIQUID-CRYSTAL POLYESTER COMPOSITION AND CURED PRODUCT THEREOF - Provided is a thermosetting composition that can be cured at a relatively low temperature and gives a cured product having excellent heat resistance. | 09-03-2015 |
20140263943 | MOLD - Provided is a technology for solving the drawback such as chipping of a heat-insulating layer which is caused by the contact of a heat-insulating layer formed on a first mold with a second mold at the mold parting surface. A mold divided into two or more is provided in which a heat-insulating layer is formed on a substantially entire surface of an inner wall surface of the mold, and the heat-insulating layer does not exist on a mold parting surface. For example, the mold is provided with a first mold occupying a majority of a cavity and a second mold which forms at least a part of the cavity together with the first mold, in which the first mold is provided with a flange part, and a part of a surface of the flange part constitutes a part of the mold parting surface. | 09-18-2014 |
20140256903 | LIQUID CRYSTAL POLYESTER AMIDE RESIN - Provided is a liquid crystal polyester amide resin which has a good hue. Specific monomers are polymerized using a specific catalyst. The specific monomers are composed of: at least one kind of a monomer selected from among aromatic aminocarboxylic acids, aromatic hydroxyamines and aromatic diamines; and at least one kind of a monomer selected from among aromatic hydroxy carboxylic acids, aromatic dicarboxylic acids or aliphatic dicarboxylic acids, and aromatic diols or aliphatic diols. It is preferable that the content of the at least one kind of a monomer selected from among aromatic aminocarboxylic acids, aromatic hydroxyamines and aromatic diamines is from 0.1 mol % to 85 mol % (inclusive). | 09-11-2014 |
20140212614 | WHOLLY AROMATIC POLYESTER AND POLYESTER RESIN COMPOSITION - A wholly aromatic polyester being excellent in heat resistance and toughness and being capable of being produced in an ordinary polymerization device, which exhibits optical anisotropy when it is molten, containing the constitutional unit (I) derived from 4-hydroxybenzoic acid, the constitutional unit (II) derived from 6-hydroxy-2-naphthoic acid, the constitutional unit (III) derived from 1,4-phenylenedicarboxylic acid, the constitutional unit (IV) derived from 1,3-phenylenedicarboxylic acid and the constitutional unit (V) derived from 4,4′-dihydroxybiphenyl, containing the constitutional unit (I) in an amount of 35 to 75 mol %, the constitutional unit (II) in an amount of 2 to 8 mol %, the constitutional unit (III) in an amount of 4.5 to 30.5 mol %, the constitutional unit (IV) in an amount of 2 to 8 mol %, the constitutional unit (V) in an amount of 12.5 to 32.5 mol %, the total of constitutional units (II) and (IV) being in an amount of 4 to 10 mol %. | 07-31-2014 |
20140149089 | SIMULATION DEVICE, PROGRAM, AND RECORDING MEDIUM - To provide a simulation device for deriving a manufacturing condition that enables break-down of a glass fiber bundle that is not broken down, being a cluster of monofilaments, into monofilaments, in manufacturing a resin molded article using a bi- or multi-axial extruder of an engaging type, a program for realizing a function of said simulation device, and a computer-readable recording medium which records the program. A method for manufacturing glass fiber-reinforced thermoplastic resin composition pellets using a bi- or multi-axial extruder comprising screws which rotate to engage with each other, the method controlling a minimum value of time integration values of shearing stress (minimum shearing stress history value T | 05-29-2014 |
20140035200 | METHOD FOR MANUFACTURING AN INJECTION-MOLDED ARTICLE - Provided is a technology that sufficiently suppresses dimensional change in the usage environment even without applying heat treatment in advance to a resin-molded article constituted of a crystalline thermoplastic resin. A resin composition constituted of a crystalline thermoplastic resin is injection-molded using a mold on the inner surface of which a heat-insulating layer is formed. It is preferable, in the present invention, to use a mold on which a heat-insulating layer is formed, the layer being constituted of porous zirconia formed by spraying method and having a thermal conductivity of 2 W/(m·K) or less and a thickness of no less than 200 μm. The injection-molded article obtained by the manufacturing method of the present invention has a dimensional change rate of 0.2% or less when left for 2 hours in an environment of a mold temperature+20° C. where the mold temperature is that at the time of injection molding and is Tg+30° C. or more and Tg+80° C. or less, in which Tg is a glass transition temperature of the crystalline thermoplastic resin. | 02-06-2014 |
20140031518 | METHOD FOR MANUFACTURING AN INJECTION-MOLDED ARTICLE AND AN INJECTION-MOLDED ARTICLE - Provided is a method for manufacturing an injection-molded article, where the method is capable of obtaining a molded article having a high crystallinity while reducing the amount of flash generated and has excellent productivity. A polyarylene sulfide-based resin composition is injection-molded at a mold temperature of 100° C. or less using a mold on the inner surface of which a heat-insulating layer constituted of porous zirconia is formed. It is preferable that the heat-insulating layer is formed by a spraying method. Preferably, the heat-insulating layer has a thermal conductivity of 2 W/(m·K) or less. Preferably, the heat-insulating layer has a thickness of no less than 200 μm. | 01-30-2014 |
20130274390 | INTEGRATED MOLDED PRODUCT - To provide a technique in which a phosphorus compound does not inhibit curing of an addition reaction type silicone-based composition even though the addition reaction type silicone-based composition is in contact with a resin molded product containing the phosphorus compound. An integrated molded product including a thermoplastic resin molded product containing a phosphorus compound, an addition reaction type silicone-based composition, and a member, in which: the thermoplastic resin molded product is in contact with the addition reaction type silicone-based composition; and a pentavalent phosphorus compound is used as the phosphorus compound. The thermoplastic resin molded product preferably contains a polybutylene terephthalate resin in light of heat resistance. | 10-17-2013 |
20130217855 | METHOD FOR MANUFACTURING A MOLD - Provided is a method for manufacturing a mold for manufacturing a molded article, by which not only is the occurrence of flash suppressed but also the crystallization of the surface is sufficiently accelerated when the mold temperature during the molding of a crystalline thermoplastic resin is set at T | 08-22-2013 |
20130035440 | POLYARYLENE SULFIDE RESIN COMPOSITION - To provide a polyarylene sulfide resin composition which contains decreased amount of chlorine, which has a high fluidity and generates small flashes at the time of molding, which has an excellent heat resistance, which can resist heat-processing under the condition of a high temperature, which has moldability at a low mold temperature, a molded article of which has an extremely small change in surface hue before and after reflow. The resin composition is obtained by blending: 100 parts by weight of a polyarylene sulfide resin (A) containing 500 to 2,000 ppm of chlorine and having 10 to 200 Pa·s of melt viscosity, 10 to 100 parts by weight of a liquid crystalline polyester amide resin (B), and 5 to 250 parts by weight of glass fiber (C) containing 100 ppm or less of nitrogen, and having a total chlorine content of 950 ppm or less, | 02-07-2013 |
20120237714 | POLYARYLENE SULFIDE RESIN COMPOSITION AND INSERT-MOLDED ARTICLE - Provided is a PAS resin composition with which molded articles having excellent high- and low-temperature impact properties can be obtained and which can be highly inhibited from leaving mold deposits when molded and is suitable for use in insert molding. Also provided is an insert-molded article obtained using the resin composition. The PAS-derived resin composition comprises a PAS resin having carboxylic terminal groups and an olefin-derived copolymer, wherein the olefin-derived copolymer comprises units of an α-olefin, a glycidyl ester of an α,β-unsaturated acid, and an acrylic ester as comonomer units, the PAS resin has a number average molecular weight of 1,000-10,000, and the content of the comonomer units derived from the glycidyl ester in the resin composition is 0.08-0.20 mass %, the ratio of the amount of the carboxylic terminal groups (mmol/kg) and the content of the comonomer units derived from the glycidyl ester (mmol/kg) being 0.35-1.00. | 09-20-2012 |
20120190813 | LIQUID-CRYSTAL POLYMER AND MOLDED ARTICLES - To provide an easily-manufactured liquid-crystalline polymer having high thermal conductivity, as well as a molded article that is formed of the liquid crystalline polymer and has a property of being highly mechanical. A liquid-crystalline polymer is used that is formed by polymerizing monomers having an asymmetrical molecular structure, in which the enthalpy of fusion ΔH measured by way of DSC (Differential Scanning calorimetry) is greater than or equal to 2.5 J/g (joules per gram) and less than or equal to 10 J/g, and the inherent viscosity (I.V.) is greater than or equal to 5 dl/g and less than or equal to 7 dl/g. It is preferable for the monomer having asymmetrical molecular structure to be at least one selected from a group consisting of 4-hydroxybenzoic acid (HBA), 6-hydroxy-2-naphthoic acid (HNA), N-acetyl-p-aminophenol (APAP), and 4-hydroxy-4′-biphenylcarboxylic acid (HBCA). | 07-26-2012 |
20120175816 | METHOD FOR MANUFACTURING AN INJECTION-MOLDED ARTICLE - To provide a method for manufacturing an injection-molded article that can control an amount of flash generated during molding, and obtain a molded article of a high degree of crystallinity. | 07-12-2012 |
20110212660 | CYCLIC OLEFIN-DERIVED RESIN FIBER AND CYCLIC OLEFIN-DERIVED RESIN NON-WOVEN FABRIC - Provided is a cyclic olefin-derived resin microfiber and a cyclic olefin-derived resin non-woven fabric. A polymer solution containing a volatile solvent and a cyclic olefin-derived resin is subjected to electrostatic spinning. The volatile solvent to be used preferably contains at least one solvent selected from the group consisting of chloroform, toluene, xylene, cyclohexane and decalin. In addition, by using a cyclic olefin-derived resin with a glass transition point of at least 160° C., high heat-resistance can be imparted to a cyclic olefin-derived resin fiber. | 09-01-2011 |
20110037193 | METHOD FOR PRODUCING POLYARYLENE SULFIDE RESIN COMPOSITION - A method is provided for obtaining a polyarylene sulfide resin composition with a low chlorine content, which has high fluidity and high quality and produces less burrs. Specifically, a method is provided wherein a polyarylene sulfide resin composition is produced by melting and mixing (A) a polyarylene sulfide resin, (B) an inorganic filler, and (C) an alkoxysilane compound. In this method, (A) a polyarylene sulfide resin having a melt viscosity of 80-400 Pa·s (at a temperature of 310° C. and a shear rate of 1200/sec) and a chlorine content of 1000-2000 ppm is supplied from a raw material feed port of a specific extruder, and then extruded at two kneading parts within the range of [shear rate (1/sec)×kneading time (sec)=1600-6000], thereby producing a polyarylene sulfide resin composition having a melt viscosity of 150-330 Pa·s (at a temperature of 310° C. and a shear rate of 1200/sec) and a chlorine content of not more than 950 ppm. | 02-17-2011 |
20100326698 | RESINOUS MATERIAL FOR COVERING ELECTRIC WIRE, ELECTRIC WIRE MANUFACTURED BY USING THE RESINOUS MATERIAL FOR COVERING ELECTRIC WIRE, AND FLAME-RETARDANT CABLE - The present disclosure provides a resinous material for covering electric wire having all required properties meeting or exceeding a certain standard, produced using a cyclic olefin-derived resin, and electric wires manufactured using the resinous material for covering electric wire, and flame-retardant cables. The resinous material including (A) an olefin-derived resin, (B) an elastomer resin, (C) a cyclic olefin-derived resin having a glass transition point of from 120° C. to 170° C., and (D) a flame retardant, the resinous material having: a content of the component (D) of from 60 parts by mass to 150 parts by mass relative to 100 parts by mass of the total contents of the components (A), (B) and (C); a tensile elongation of no less than 250%; and a heat deformation of no greater than 40%. | 12-30-2010 |
20100307627 | MULTI-LAYER CYLINDRICAL MOLDED ARTICLE - The present disclosure provides a highly heat-resistant multilayer molded article having excellent adhesion between layers and which can be inexpensively produced and easily recycled. The multilayer molded article includes an innermost layer having a first polyarylene sulfide-derived resin composition including 95% to 80% by mass of a polyarylene sulfide-derived resin and 5% to 20% by mass of an olefinic (olefine-derived) elastomer, and an outer layer disposed on an outer-side of the innermost layer, including a second polyarylene sulfide-derived resin composition having 5 to 35 parts by mass of reinforced fibers relative to 100 parts by mass of the first polyarylene sulfide resin composition. | 12-09-2010 |
20100237284 | LIQUID CRYSTALLINE POLYESTER RESIN COMPOSITION - The present invention provides a liquid crystalline polyester resin composition which imparts a good mold-releasability during molding and further is improved in heat resistance. Specifically, with 100 parts by weight of a liquid crystalline polyester resin is added 0.001 to 1 part by weight of a fatty acid ester which is a tetraester of pentaerythritol and a C10 to C32 higher fatty acid and has an acid value ranging from 0.01 to 0.5 and a hydroxyl value ranging from 0.01 to 5. | 09-23-2010 |
20100225032 | CYCLOOLEFIN RESIN COMPOSITION - A cycloolefin resin composition which controls the flexibility of a cycloolefin resin and may be molded in an environment having a temperature exceeding about 140° C. is provided. A cycloolefin resin film, a cycloolefin resin preform and the like are provided utilizing the cycloolefin resin composition including two or more cycloolefin copolymer resins having Tg values different from each other by about 10° C. or more, and the storage modulus of about 120° C. (E′ | 09-09-2010 |
20100087575 | POLYACETAL RESIN COMPOSITION - The present invention provides a polyacetal resin material having reduced generation of gases such as formaldehyde to the utmost limit while maintaining or further improving the excellent properties such as mechanical properties, processability and surface properties, of which the polyacetal resin is inherently possessed. In detail, the present invention provides a polyacetal resin composition, obtained by blending, to 100 parts by weight of (A1) a polyacetal resin having substantially linear molecular structure, 0.01 to 20.0 parts by weight of (A2) a polyacetal resin having a branched or crosslinked structure, 0.01 to 5.0 parts by weight of (B) a hindered phenol-based antioxidant and 0.01 to 5.0 parts by weight of (C) a hydrazide compound. | 04-08-2010 |
20090197471 | ASYMMETRIC ELECTRONIC PARTS - Provided is a material capable of forming a molded product which has good mechanical properties with low warpage while being excellent in any of the performance including heat resistance and flowability, even if the molded product is an asymmetric electronic parts. Specifically, the asymmetric electronic parts is prepared by molding a liquid crystalline polymer composition comprising (A) a fibrous filler having an average fiber diameter within the range of 5 to 30 μm, having a weight average fiber length within the range of 250 to 350 μm, excluding 10 μm or shorter fiber length, and having a content of a fibrous filler being 700 μm or longer within the range of 5% by weight or less; and (B) a plate-like filler having an average particle size within the range of 0.5 to 200 μm, the total filling amount of (A) and (B) components in the composition being within the range of 40 to 60% by weight, the weight ratio of (A) component being within the range of 10 to 20% by weight, the weight ratio of (B) component being within the range of 30 to 40% by weight, the molded product having no symmetry in any of the axial plane XY, the axial plane YZ, and the axial plane XZ of the molded product. | 08-06-2009 |
20090163632 | CYCLOOLEFIN COPOLYMER - A novel cycloolefin copolymer that can be employed in the production of molding with fewer defects, for example, fewer gel particles (fish eyes). There is provided a cycloolefin copolymer comprising 80 to 20 mol % of repeating units derived from an α-olefin monomer and 20 to 80 mol % of repeating units derived from at least one cycloolefin monomer selected from the group consisting of monomer of the general formula (I), monomer of the general formula (II), monomer of the general formula (III), monomer of the general formula (IV) and monomer of the general formula (V), wherein with respect to the repeating units derived from cycloolefin monomer, the proportion thereof being present in the form of dimer (Rd) is 50 mol % or below and the proportion thereof being present in the form of trimer (Rt) 5 mol % or above. | 06-25-2009 |
20090137724 | Thermoplastic Resin Composition - The invention provides a thermoplastic resin composition which has high rigidity and high flowability, gives less peeling of molding surface, and provides excellent appearance, and which can be suitably used for mechanical parts of automobile and mechanical parts of electrical and electronic products. Provided is the thermoplastic resin composition comprising: 100 parts by weight of (A) a sole polybenzimidazole resin or a mixed thermoplastic resin composed of 70 to 20% by weight of a polybenzimidazole resin and 30 to 80% by weight of a polyether ketone resin; and 5 to 100 parts by weight of (B) a liquid crystalline polyester amide resin containing one or more types of structuring monomer of 4-aminophenol, 1, 4-phenylenediamine, 4-aminobenzoic acid, and a derivative thereof, and containing 3 to 35% by mole of an amide component in the total bonds. | 05-28-2009 |
20090018236 | ANTIHAZING AGENT FOR NONCRYSTALLINE CYCLOOLEFIN RESINS, RESIN COMPOSITIONS, AND OPTICAL ELEMENTS - An antihazing agent for noncrystalline cycloolefin resins which can inhibit the hazing of the resins due to fine cracking caused by environmental change, particularly, environmental change from high temperature and humidity atmosphere to ordinary temperature and humidity atmosphere without losing the characteristics inherent in the resins to keep the transparency of the resins and inhibit the light transmittance thereof from lowering; noncrystalline cycloolefin resin compositions containing the agent; and optical elements made from the compositions. A compound component containing a metal rosinate as the main component is used as the antihazing agent for noncrystalline cycloolefin resins. It is particularly preferable that the antihazing agent further contain one or more members selected from the group consisting of alkali metal salts, alkaline earth metal salts, and Group 12 metal salts. | 01-15-2009 |
20080286510 | Resin Composition for Extrusion Molding and Extrusion-Molded Article - A purpose of the present invention is to obtain a hollow extruded article by easy blow molding or extrusion molding to give a draw down resistance and a uniform wall thickness of the article without damaging low gas permeability which is a characteristic property of a liquid-crystalline polymer. A resin composition for extrusion molding which is prepared by melting and kneading 99-70 wt. % of wholly aromatic polyester amide liquid crystal resin (A) having a melting point of 270-370° C. and a melt viscosity at 1000/sec. shear rate of 20-60 Pa·s at Temperature T1 which is higher than 20° C. from said melting point, and containing (I) 1-15 mole % of 6-hydroxy-2-naphthoic acid residue, (II) 40-70 mole % of 4-hydroxybenzoic acid residue, (III) 5-28.5 mole % of aromatic diol residue, (IV) 1-20 mole % of 4-aminophenol residue, and (V) 6-29.5 mole % of aromatic dicarboxylic acid residue; and 1-30 wt. % of epoxy modified polyolefin type resin (B), and has a melt viscosity at 1000/sec. shear rate of 60-4000 Pa·s at said Temperature T1, and a melt tensile strength of 20 mN or more at 14.8 m/min. draw rate is used. | 11-20-2008 |
20080271381 | Method for manufacturing stabilized polyacetal resin, stabilized polyacetal resin, stabilized polyacetal resin composition, and molded article of stabilized polyacetal resin - The present invention provides an agent to decompose instable terminal group, which is effective in a small adding amount, which sufficiently decreases the quantity of residual instable terminal group, and which generates very little limitation on the treatment method, the apparatus, and the use amount of the agent. Specifically, it provides a method for manufacturing stabilized polyacetal resin having the step of applying heat treatment to a polyacetal resin having an instable terminal group in the presence of an agent to decompose the instable terminal group, which agent is composed of a heterocyclic quaternary ammonium salt, thus decreasing the quantity of the instable terminal group. | 11-06-2008 |