| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 524572000 | Adding nonreactive material to chemically modified solid polymer | 72 |
| 20090005496 | METHOD FOR PRODUCING CONJUGATED DIENE POLYMER, CONJUGATED DIENE POLYMER, AND POLYMER COMPOSITION - A method for producing a conjugated diene polymer is provided that includes a step of polymerizing a conjugated diene-containing monomer in a hydrocarbon solvent in the presence of an alkali metal catalyst, thus giving a polymer having a catalyst-derived alkali metal at one terminus of a polymer chain comprising a conjugated diene-based monomer unit, and a step of reacting the polymer obtained in the step of polymerizing and a trialkoxysilane compound represented by the formula below. | 01-01-2009 |
| 20090005497 | METHOD FOR PRODUCING CONJUGATED DIENE POLYMER, CONJUGATED DIENE POLYMER, AND POLYMER COMPOSITION - A method for producing a conjugated diene polymer is provided that includes a step of polymerizing a conjugated diene-containing monomer in a hydrocarbon solvent in the presence of an alkali metal catalyst, thus giving a polymer having a catalyst-derived alkali metal at one terminus of a polymer chain comprising a conjugated diene-based monomer unit, and a step of reacting the polymer obtained in the step of polymerizing and a trialkoxysilane compound represented by the formula below. | 01-01-2009 |
| 20090093587 | MODIFIED BUTYL RUBBER COMPOSITION - A modified butyl rubber composition comprising a butyl rubber modified by mixing, under heating, (a) a compound having a nitroxide-free radical in the molecule thereof, which is stable at an ordinary temperature even in the presence of oxygen, (b) a radical initiator, and (c) a bi- or more-functional radical polymerizable monomer and further by compounded with (d) a bi- or more-functional radical polymerizable monomer, which is different from the ingredient (c). | 04-09-2009 |
| 20090209699 | Method of producing a rubber composition - The invention is directed to a method of manufacturing a rubber composition with improved processing properties and optimized abrasion characteristics. Three methods with differing number of processing steps for the manufacture of a rubber composition with improved processing properties and optimized abrasion characteristics are disclosed. | 08-20-2009 |
| 20090247696 | CONJUGATED DIENE POLYMER, PROCESS FOR PRODUCING THE SAME, AND CONJUGATED DIENE POLYMER COMPOSITION AND VULCANIZATE - A conjugated diene polymer is provided that includes a conjugated diene-based constituent unit and a constituent unit represented by Formula (I) below, the constituent unit represented by Formula (I) being present between a conjugated diene-based constituent unit and a conjugated diene-based constituent unit, and the content of the constituent unit represented by Formula (I) being 1 unit or 2 units per polymer chain. | 10-01-2009 |
| 20100016500 | PROCESS FOR PRODUCING MODIFIED POLYMER, MODIFIED POLYMER OBTAINED BY THE PROCESS, AND RUBBER COMPOSITION CONTAINING THE SAME - A process for producing a modified polymer that exhibits low rolling resistance, excellent mechanical properties (e.g., tensile strength), high wet-skid resistance, and excellent wear resistance when vulcanized, a modified polymer obtained by the process, and a rubber composition containing the same. The process includes subjecting an alkali metal active end of a conjugated diene polymer to a modification reaction with an alkoxysilane compound, the conjugated diene polymer being produced by subjecting a diene monomer or a diene monomer and a monomer other than the diene monomer to anionic polymerization in a hydrocarbon solvent using an alkali metal initiator, and subjecting the resulting product to a condensation reaction in the presence of a condensation accelerator that includes a compound of at least one element among the elements of the groups 4A (excluding Ti), 2B, 3B, and 5B of the periodic table. | 01-21-2010 |
| 20100056712 | CONJUGATED DIENE POLYMER, CONJUGATED DIENE POLYMER COMPOSITION, AND METHOD FOR PRODUCING CONJUGATED DIENE POLYMER - A conjugated diene polymer is provided that comprises a conjugated diene-based constituent unit and a constituent unit of formula (I), at least one terminus of the polymer being modified by a compound having a linkage of formula (II): | 03-04-2010 |
| 20100056713 | CONJUGATED DIENE POLYMER, CONJUGATED DIENE POLYMER COMPOSITION, AND METHOD FOR PRODUCING CONJUGATED DIENE POLYMER - A conjugated diene polymer is provided that comprises a conjugated diene-based constituent unit and a constituent unit of formula (I) below, at least one terminus of the polymer being modified by a compound of formula (II): | 03-04-2010 |
| 20100063202 | Methods of Making Siloxy-Amine Functionalized Rubbery Polymers and Uses Thereof in Rubber Compositions for Tires - The invention includes a siloxy-amine functionalized rubbery polymer, which exhibits good reinforcing characteristics and filler dispersing effect, a method for making, and a rubber composition including the same. In one embodiment, a process for manufacturing includes polymerizing a conjugated diene monomer using an organolithium compound as an initiator in a hydrocarbon solvent. Next, an active terminal end of the polymer is reacted with a functionalized terminating agent represented by: | 03-11-2010 |
| 20100113683 | METHOD FOR PRODUCING MODIFIED CONJUGATED DIENE BASED (CO)POLYMER, MODIFIED CONJUGATED DIENE BASED (CO)POLYMER, AND RUBBER COMPOSITION - The method for producing a modified conjugated diene based (co)polymer, according to the present invention comprises
| 05-06-2010 |
| 20100152369 | METHOD FOR PRODUCING MODIFIED CONJUGATED DIENE BASED (CO)POLYMER, MODIFIED CONJUGATED DIENE BASED (CO)POLYMER, AND RUBBER COMPOSITION - The method for producing a modified conjugated diene based (co)polymer, according to the present invention comprises a step of reacting a conjugated diene based (co)polymer with a metal halide compound to obtain a modified conjugated diene based (co)polymer, the conjugated diene based (co)polymer having a weight-average molecular weight of 150,000 to 2,000,000 and being obtained by bonding, to a polymer having at least a conjugated diene unit, an alkoxysilyl group and an optionally protected primary amino group. The method can satisfactorily produce a conjugated diene based (co)polymer which has a high Mooney viscosity, excellent shape stability and good processability. | 06-17-2010 |
| 20100152370 | RUBBER MIXTURES WITH FUNCTIONALIZED DIENE RUBBERS AND WITH MICROGELS, A PRODUCTION PROCESS, AND USE OF THE MIXTURESu - The present invention relates to rubber mixtures with functionalized diene rubbers and with microgels, to a production process, and to the use of the mixtures for the production of low-abrasion motor-vehicle tyres which have wet-slip resistance and which have low rolling resistance. | 06-17-2010 |
| 20100317794 | METHOD FOR PRODUCING MODIFIED CONJUGATED DIENE POLYMER, MODIFIED CONJUGATED DIENE POLYMER, AND RUBBER COMPOSITION - A method for producing a modified conjugated diene polymer includes carrying out a modification reaction that reacts a modifier that includes a specific compound with a conjugated diene polymer having a cis-1,4-bond content of 98.5% or more and possessing an active end to introduce the modifier into the active end of the conjugated diene polymer to obtain a modified conjugated diene polymer. The modified conjugated diene polymer that exhibits excellent wear resistance, excellent mechanical properties, and reduced cold flow can be obtained by the method. | 12-16-2010 |
| 20110082253 | MODIFIED ELASTOMERIC POLYMERS - The invention provides a elastomeric polymer composition comprising the reaction product of at least the following: i) a living anionic elastomeric polymer; ii) a silane modifier compound represented by the Formula I or Formula 2: (RIO) | 04-07-2011 |
| 20110136969 | RUBBER COMPOSITION CONTAINING SILICA REINFORCEMENT AND FUNCTIONALIZED CROSSLINKS AND PRODUCTS WITH COMPONENT THEREOF - The invention relates to a rubber composition which contains silica reinforcement and functionalized crosslinks, particularly crosslinked functionalized precipitated silica, including sulfur crosslinked functionalized silica and associated cured rubber compositions, and to articles of manufacture having a component thereof such as, for example tires. A dimercaptothiadiazole is used to form the crosslinked network within the rubber composition. The mercapto moieties of said dimercaptothiadiazole are desirably protected from prematurely reacting with, for example, diene-based elastomers and sulfur-containing silica coupling agents by pre-reaction with an aromatic carboxylic acid chloride or by reacting in situ with an aromatic carboxylic acid | 06-09-2011 |
| 20110160388 | PROCESS FOR PRODUCTION OF MODIFIED CONJUGATED DIENE COPOLYMER, MODIFIED CONJUGATED DIENE COPOLYMER PRODUCED BY THE PROCESS, RUBBER COMPOSITION, AND TIRE - A process for producing a modified conjugated diene-based copolymer comprising bringing a modifier into reaction with the active end of a copolymer of a conjugated diene compound and an aromatic vinyl compound having the active end, wherein a compound having (i) a hydrolyzable functional group having silicon and (ii) a group which can be converted into a protonic amino group or a protonic amino group protected with an eliminable functional group after the reaction is used as the modifier, a step of adding a condensation catalyst is conducted after the modifier is brought into the reaction, and the content of the unit of the aromatic vinyl compound and the structure of the chain of the aromatic vinyl compound are specified. The process provides a modified conjugated diene-based copolymer which is a modified product of a copolymer of a conjugated diene and an aromatic vinyl compound, provides excellent interaction between the rubber component and carbon black and/or silica, can further improve dispersion of the fillers and provides a tire exhibiting excellent low heat buildup property, fracture properties and abrasion resistance. | 06-30-2011 |
| 20110207879 | CONJUGATED DIENE POLYMER, CONJUGATED DIENE POLYMER COMPOSITION, AND METHOD FOR PRODUCING CONJUGATED DIENE POLYMER - A conjugated diene polymer is provided that includes a conjugated diene-based monomer unit and a monomer unit based on a monomer represented by Formula (1) below, the polymer having at least one terminus modified by a compound represented by Formula (2) below | 08-25-2011 |
| 20110224365 | MODIFIED NATURAL RUBBER, PRODUCTION PROCESS FOR THE SAME AND RUBBER COMPOSITION AND TIRE PREPARED BY USING THE SAME - After hydrolyzing a phospholipid bonded to a molecular end of a natural rubber, a compound having a polar group reacting with a hydroxyl group is condensed with a hydroxyl group contained in the phospholipid-hydrolyzed natural rubber to thereby obtain a modified natural rubber in which a polar group is present at a molecular end. The modified natural rubber thus obtained in which a polar group is present at a molecular end is used for a rubber component of a rubber composition, whereby a rubber composition in which carbon black and silica as fillers are bonded to the rubber component to enhance a reinforcing effect and which is excellent in a low hysteresis loss property and abrasion resistance to a large extent is obtained. An enzyme or an alkali is used for hydrolyzing the phospholipid, and a condensing agent is used for condensing the polar group-containing compound. | 09-15-2011 |
| 20110294949 | RUBBER COMPOSITION FOR BREAKER AND PNEUMATIC TIRE - The present invention provides a rubber composition for a breaker, which achieves both good fuel economy and good breaking performance while simultaneously having excellent processability, and a pneumatic tire including a breaker produced using the rubber composition. The present invention relates to a rubber composition for a breaker, including: a rubber component that contains a modified natural rubber, the rubber having a phosphorus content of 200 ppm or less; and carbon black and/or a white filler, wherein the rubber composition contains 5% by mass or more of the modified natural rubber based on 100% by mass of the rubber component. | 12-01-2011 |
| 20120010355 | POLYHEDRAL-MODIFIED POLYMER - A macromolecule including a polymer and a polyhedral radical chemically bonded to a terminus of the polymer provides numerous processing and performance advantages. Further functionalization of this macromolecule also is described as being advantageous in certain circumstances. Methods of providing, functionalizing, and utilizing the macromolecule also are provided. | 01-12-2012 |
| 20120041140 | MODIFIED CONJUGATED DIENE-BASED POLYMER, POLYMER COMPOSITION, AND PROCESS FOR PRODUCING MODIFIED CONJUGATED DIENE-BASED POLYMER - Disclosed are a modified conjugated diene-based polymer capable of providing a polymer composition improved in tan δ balance, a polymer composition containing the modified conjugated diene-based polymer and silica, and a process for producing the modified conjugated diene-based polymer. The modified conjugated diene-based polymer is obtained by melt-kneading a conjugated diene-based polymer and 0.01 to 2 parts by weight of a Bunte salt per 100 parts by weight of the conjugated diene-based polymer, in the presence of water whose amount is from 0.1 to 1,000 parts by weight per one part by weight of the Bunte salt. | 02-16-2012 |
| 20120059112 | POLYMERS FUNCTIONALIZED WITH NITRILE COMPOUNDS COMTAINING A PROTECTED AMINO GROUP - A method for preparing a functionalized polymer, the method comprising the steps of (i) polymerizing monomer with a coordination catalyst to form a reactive polymer; and (ii) reacting the reactive polymer with a nitrile compound containing a protected amino group. | 03-08-2012 |
| 20120136113 | HYDROXYARYL FUNCTIONALIZED POLYMERS - A functionalized polymer includes the reaction product of a reactive polymer and a compound that includes an aryl group having at least one directly bonded OG | 05-31-2012 |
| 20120149833 | POLYMERS FUNCTIONALIZED WITH OXIME COMPOUNDS CONTAINING AN ACYL GROUP - A method for preparing a functionalized polymer, the method comprising the steps of polymerizing monomer to form a reactive polymer; and reacting the reactive polymer with a protected oxime compound containing an acyl group. | 06-14-2012 |
| 20120184671 | MODIFIED NATURAL RUBBER, PRODUCTION METHOD THEREOF, TIRE RUBBER COMPOSITION, AND PNEUMATIC TIRE - The present invention provides a modified natural rubber which simultaneously achieves good fuel economy and good heat-aging resistance, and the production method thereof. The present invention also provides a tire rubber composition and a pneumatic tire which are produced using the modified natural rubber. The present invention relates to a modified natural rubber which is obtainable by treating a rubber coagulated from a saponified natural rubber latex, with a basic compound and then with an acidic compound. | 07-19-2012 |
| 20120220716 | MODIFYING AGENT, METHOD FOR PRODUCING MODIFIED CONJUGATED DIENE POLYMER USING MODIFYING AGENT, AND MODIFIED CONJUGATED DIENE POLYMER - Provided are a modifying agent obtained by subjecting a silicon-containing compound having a protected primary amino group and at least two hydrolyzable groups to complete condensation, a method of producing a modified conjugated diene-based polymer, a modified conjugated diene-based polymer obtained by the production method, a rubber composition using the polymer, and a pneumatic tire. The modified conjugated diene-based polymer has excellent low heat generating property and abrasion resistance, and the rubber composition is obtained by using the modified conjugated diene-based polymer and the pneumatic tire is obtained by using the rubber composition. | 08-30-2012 |
| 20120270997 | METHOD OF PRODUCING MODIFIED CONJUGATED DIENE RUBBER, MODIFIED CONJUGATED DIENE RUBBER, AND RUBBER COMPOSITION - There is provided a method of producing a conjugated diene rubber capable of being used as a starting material for a crosslinked rubber that can be used in applications such as tire treads and can raise the fuel efficiency. This method of producing a conjugated diene rubber comprises (a) a step of reacting a first alkoxysilane compound having in a molecule at least one group convertible to onium by an onium generator and at least one alkoxysilyl group that has at least two alkoxy groups, with a conjugated diene polymer having an alkali metal or alkaline-earth metal active terminal and obtained by polymerizing a conjugated diene compound and an aromatic vinyl compound, thereby to obtain a modified conjugated diene polymer that has the group convertible to onium and the alkoxysilyl group, and (b) a step of mixing the resulting modified conjugated diene polymer with the onium generator and a second alkoxysilane compound having in a molecule at least one alkoxysilyl group and at least one group convertible to onium by the onium generator. | 10-25-2012 |
| 20120309894 | METHOD FOR PRODUCING A RUBBER COMPOSITION - A method for producing a rubber composition, the method comprising a step of producing a pre-kneaded rubber composition by kneading a butadiene-based rubber and 1 to 20 parts by weight of a silane coupling agent per 100 parts by weight of the butadiene-based rubber and a step of kneading the pre-kneaded rubber composition and 30 to 200 parts by weight of a silica per 100 parts by weight of the butadiene-based rubber used for producing the pre-kneaded rubber composition. | 12-06-2012 |
| 20130023623 | PROCESS FOR PRODUCTION OF MODIFIED CONJUGATED DIENE RUBBER, MODIFIED CONJUGATED DIENE RUBBER, AND RUBBER COMPOSITION - To provide a producing method of conjugated diene rubber which can be used as a starting material of cross-linked rubber which is used for such as tire tread and can enhance low fuel consumption performance. | 01-24-2013 |
| 20130023624 | Method for Producing Modified Conjugated Diene-Based Polymer, Modified Conjugated Diene-Based Polymer, and Modified Conjugated Diene-Based Polymer Composition - A method for producing a modified conjugated diene-based polymer having a good balance between the hysteresis loss properties and the wet skid resistance, practically sufficient abrasion resistance and breaking strength, and high processability when formed into a vulcanized product is provided. A method for producing a modified conjugated diene-based polymer, comprising: a polymerization step of polymerizing a conjugated diene compound, copolymerizing conjugated diene compounds, or copolymerizing a conjugated diene compound with an aromatic vinyl compound using an alkali metal compound or an alkaline earth metal compound as a polymerization initiator to obtain a conjugated diene-based polymer having an active end, and a modifying step of reacting a compound represented by following formula (1) with the active end of the conjugated diene-based copolymer. | 01-24-2013 |
| 20130035437 | RUBBER COMPOSITIONS INCLUDING SILICEOUS FILLERS - Vulcanizates with desirable properties can be obtained from compositions incorporating polymers that include hydroxyl group-containing aryl functionalities, silica or other particulate filler(s) that contain or include oxides of silicon and a group or compound that can act to covalently bond the filler particles and the polymer. The group can be provided as a substituent of the filler particle, or a discreet compound can be provided in the composition. | 02-07-2013 |
| 20130041096 | POLYHEDRAL-MODIFIED POLYMER - A macromolecule including a polymer and a polyhedral radical chemically bonded to a terminus of the polymer provides numerous processing and performance advantages. Further functionalization of this macromolecule also is described as being advantageous in certain circumstances. Methods of providing, functionalizing, and utilizing the macro-molecule also are provided. | 02-14-2013 |
| 20130079464 | RUBBER COMPOSITION AND PNEUMATIC TIRE - The present invention provides a rubber composition that achieves a well-balanced improvement in fuel economy, wet-grip performance, and abrasion resistance, and a pneumatic tire formed from the rubber composition. The present invention relates to a rubber composition, including a rubber component and silica, wherein the rubber component contains not less than 5% by mass of a conjugated diene polymer, based on 100% by mass of the rubber component, the conjugated diene polymer containing a constituent unit derived from a conjugated diene and a constituent unit represented by the following formula (I): | 03-28-2013 |
| 20130085227 | POLYMERS FUNCTIONALIZED WITH NITRILE COMPOUNDS CONTAINING A PROTECTED AMINO GROUP - A method for preparing a functionalized polymer, the method comprising the steps of polymerizing monomer with a coordination catalyst to form a reactive polymer and reacting the reactive polymer with a nitrile compound containing a protected amino group. | 04-04-2013 |
| 20130085228 | MODIFIED CONJUGATED DIENE RUBBER, METHOD FOR PRODUCING SAME, AND RUBBER COMPOSITION - By a method comprising a process including (a) producing a modified conjugated diene polymer through reaction of a conjugated diene polymer having an alkali metal or alkaline-earth metal active terminal with a first alkoxysilane compound which has both an alkoxysilyl group and at least one group convertible into an onium, and (b) mixing the modified conjugated diene polymer, an agent for producing onium, a second alkoxysilane compound having an alkoxysilyl group and at least one group convertible into an onium and a condensation catalyst containing metal element(s) for alkoxysilane compounds, conjugated diene rubber usable as a starting material of cross-linked rubber which is used for a tire tread or the like and allows enhancement of low fuel consumption property can be obtained. | 04-04-2013 |
| 20130090427 | END-MODIFIED DIENE COPOLYMER HAVING GOOD COMPATIBILITY WITH REINFORCING SILICA AND PREPARATION METHOD THEREOF - The present invention provides an end-modified diene copolymer having excellent compatibility with silica as a reinforcement material, and a preparation process thereof, in which the end-modified diene copolymer is prepared by preparing a living polymer of a conjugated diene monomer and/or a vinyl aromatic monomer, modifying the living polymer with a reactive organosiloxane compound, and then modifying the end of the living polymer, to which the organosiloxane compound has not been coupled, with an organosilane compound having various functional groups. When the end-modified diene copolymer is used as a rubber material in the manufacture of a silica tire, the dispersion of silica in the copolymer can be improved and the bonding strength between silica and the rubber can be significantly increased, thereby manufacturing a high-quality silica tire. | 04-11-2013 |
| 20130150522 | CONJUGATED DIENE RUBBER MODIFIED WITH POLAR ALKOXYSILANE, METHOD AND COMPOSITION THEREOF - A modified conjugated diene rubber is disclosed. A method for producing the modified conjugated diene rubber includes providing an alkali metal ion-containing conjugated diene rubber; and reacting the alkali metal ion-containing conjugated diene rubber with an alkoxysilane to generate the modified conjugated diene rubber, the alkoxysilane being of the structural formula: | 06-13-2013 |
| 20130158191 | Method and Formulation For Reinforcing Elastomers - A rubber composition has a base rubber, a filler which is a protein, including soy protein, derived from byproducts resulting from the manufacture of biodiesel fuel and a coupling agent. | 06-20-2013 |
| 20130184402 | COPOLYMER, RUBBER COMPOSITION, CROSSLINKED RUBBER COMPOSITION, AND TIRE - Provided is a copolymer of a conjugated diene compound and a non-conjugated olefin, the copolymer being a tapered copolymer including: at least one of a block sequence including monomer units of the conjugated diene compound and a block sequence including monomer units of the non-conjugated olefin; and a random sequence including randomly arranged monomer units of the conjugated diene compound and monomer units of the non-conjugated olefin. | 07-18-2013 |
| 20130261252 | FUNCTIONALIZED POLYMER, RUBBER COMPOSITION AND PNEUMATIC TIRE - The present invention is directed to a functionalized elastomer comprising the reaction product of a living anionic elastomeric polymer and a polymerization terminator of formula I | 10-03-2013 |
| 20130281609 | FUNCTIONALIZED HIGH VINYL DIENE RUBBERS - The present invention relates to functionalized high-vinyl-content diene rubbers, to the preparation of rubber mixtures which comprise functionalized high-vinyl-content diene rubbers, and to the use thereof for the production of rubber vulcanizates which serve in particular for the production of highly reinforced rubber mouldings, particularly preferably for the production of tyres, where these have particularly low rolling resistance, and particularly high wet skid resistance and abrasion resistance. | 10-24-2013 |
| 20130303685 | BLOCK DIENE ELASTOMER FOR RUBBER COMPOSITIONS THAT CAN BE USED IN PNEUMATIC TIRES - The invention relates to a block diene elastomer corresponding to the following formula: | 11-14-2013 |
| 20130331507 | METHOD FOR PRODUCING POLYDIENES AND POLYDIENE COPOLYMERS WITH REDUCED COLD FLOW - A method for preparing a coupled polymer, the method comprising the steps of: (i) polymerizing monomers to form a reactive polymer, and (ii) reacting the reactive polymer with a boronic ester containing a cyano group. | 12-12-2013 |
| 20130331508 | POLYMERS FUNCTIONALIZED WITH UNSATURATED HETEROCYCLES CONTAINING A PROTECTED AMINO GROUP - A method for preparing a functionalized polymer, the method comprising the steps of: (i) polymerizing monomers to form a reactive polymer, and (ii) reacting the reactive polymer with an unsaturated heterocycle containing a protected amino group. | 12-12-2013 |
| 20140031487 | EPOXIDISED ELASTOMER COMPOSITIONS MODIFIED BY SILANES - This invention relates to the modification of elastomers especially epoxidised rubber by reaction with unsaturated silanes, to the modified elastomers produced and to articles produced by shaping and curing modified elastomer compositions. In a process according to the present invention, the silane has the formula: | 01-30-2014 |
| 20140031488 | Polymers Functionalized With Protected Hydrazone Compounds Containing An Acyl Group - A method for preparing a functionalized polymer, the method comprising the steps of: (i) polymerizing monomer to form a reactive polymer; and (ii) reacting the reactive polymer with a protected hydrazone compound containing an acyl group. | 01-30-2014 |
| 20140051799 | MODIFIED CONJUGATED DIENE RUBBER, METHOD FOR PRODUCING SAME, AND RUBBER COMPOSITION - A method containing a step of reacting a conjugated diene polymer having an alkali metal or alkaline earth metal active end with a hydrocarbyloxysilane compound having one or more of each of the following functional groups I and II in its molecule to obtain a modified conjugated diene polymer containing a functional group II, and a step of mixing the modified conjugated diene polymer and a compound such as organic acid. A modified conjugated diene rubber which can be used as a raw material of a cross-linked rubber which can be used in tire treads and the like and can enhance low fuel consumption performance is provided. The functional group I is a hydrocarbyloxysilyl group. The functional group II is a nitrogen-containing group in which both of two hydrogen atoms of a primary amino group are substituted with protective groups. | 02-20-2014 |
| 20140107284 | FUNCTIONALIZED POLYMER, RUBBER COMPOSITION AND PNEUMATIC TIRE - There is disclosed a functionalized elastomer of formula I | 04-17-2014 |
| 20140155542 | PREPARATION AND USE OF FUNCTIONALIZED ELASTOMERS IN RUBBER COMPOSITIONS CONTAINING SILICA FILLER AND TIRE COMPONENTS THEREOF - This invention relates to preparation and use of in situ functionalized elastomers in a rubber composition, namely post polymerization functionalization of elastomers, in rubber compositions containing precipitated silica filler reinforcement and tires having components thereof. | 06-05-2014 |
| 20140155543 | PROCESS FOR THE PREPARATION OF 1,3-BUTADIENE AND STYRENE COPOLYMERS AND USE THEREOF IN VULCANIZABLE ELASTOMERIC COMPOSITIONS - A process for the preparation of a 1,3-butadiene and styrene copolymer comprising the following steps: a) anionically polymerizing a blend comprising from 5% by weight to 40% by weight of styrene and from 60% by weight to 95% by weight of 1,3-butadiene, with respect to the overall weight of the mixture, in the presence of at least one hydrocarbon solvent, of at least one lithium-based catalyst having the general formula LiR | 06-05-2014 |
| 20140179860 | MODIFIED CONJUGATED DIENE POLYMER AND SYNTHESIS METHOD THEREOF - Provided is a synthesis method of a modified conjugated diene polymer. Conjugated diene monomers are reacted in a reaction system. A modifier is added into the reaction system while the reaction proceeds to a predetermined extent. The modifier has a structure represented by formula (1): | 06-26-2014 |
| 20140200306 | TERMINAL MODIFIER FOR CONJUGATED DIENE POLYMERS - Disclosed is a terminal modifier for conjugated diene polymers. The terminal modifier has both at least two amine groups and at least one alkoxysilane group. A terminally modified conjugated diene polymer which is coupled at the terminus with the terminal modifier, and a polymer composition for use in tires, comprising the terminally modified, conjugated diene polymer are also provided. When applied to tire treads, the polymer composition comprising the terminally modified, conjugated diene polymer significantly increases the disperability and binding to rubber of silica, thereby greatly contributing to an improvement of the tire treads in dynamic properties including wet traction, rolling resistance, Mooney viscosity and processability. | 07-17-2014 |
| 20140213721 | Method for Producing Modified Conjugated Diene-Based Polymer, Modified Conjugated Diene-Based Polymer, Modified Conjugated Diene-Based Polymer Composition, Rubber Composition and Tire - A method for producing a modified conjugated diene-based polymer including
| 07-31-2014 |
| 20140275403 | POLYMERS FUNCTIONALIZED WITH POLYCYANO COMPOUNDS - A method for preparing a functionalized polymer, the method comprising the steps of polymerizing monomer to form a reactive polymer, and reacting the reactive polymer with a polycyano compound. | 09-18-2014 |
| 20140316057 | GRAFT POLYMER TO WHICH COMBINED NITROGEN MOLECULES ARE GRAFTED - The present invention relates to a modified polymer obtained by grafting a compound comprising at least one group Q, and at least one group A bonded together by at least, and preferably, one “spacer” group Sp in which:
| 10-23-2014 |
| 20150051338 | METHOD FOR PRODUCING RUBBER COMPOSITION - A method for producing a rubber composition, comprising a first mixing step of causing a diene rubber, a carbon black, and a dihydrazide compound to react with each other in the presence of no silica while the three of the diene rubber, the carbon black, and the dihydrazide compound are kneaded, and a second mixing step of adding a silica to the kneaded product yielded through the first mixing step, and then mixing the silica with the kneaded product. | 02-19-2015 |
| 20150065647 | FUNCTIONALIZED POLYMER, RUBBER COMPOSITION AND PNEUMATIC TIRE - There is disclosed a functionalized elastomer comprising the reaction product of (1) a living anionic elastomeric polymer comprising units derived from divinylbenzene and a monomer comprising isoprene; and (2) a polymerization terminator of formula | 03-05-2015 |
| 20150087768 | Elastomeric Polymer Compositions - An elastomeric polymer composition formed from a reaction product of a living anionic elastomeric polymer and sulfur containing chain end modifier with the general formula: | 03-26-2015 |
| 20150148477 | FUNCTIONALIZED POLYMER, RUBBER COMPOSITION AND PNEUMATIC TIRE - The present invention is directed to a functionalized elastomer comprising the reaction product of a living anionic elastomeric polymer and a polymerization terminator of formula I | 05-28-2015 |
| 20150322183 | HEAVY GOODS VEHICLE TIRE COMPRISING A TREAD BASED ON A MODIFIED POLYISOPRENE, PROCESS FOR PREPARING SAME - A heavy-duty vehicle tire comprising a tread consisting of a crosslinked rubber composition comprising a reinforcing filler of siliceous type and a synthetic polyisoprene modified by grafting with a compound comprising at least one group Q, and at least one group A, which are joined to one another by at least one and preferably one “spacer” group Sp, in which:
| 11-12-2015 |
| 20150329655 | POLYMERS FUNCTIONALIZED WITH PROTECTED OXIME COMPOUNDS CONTAINING A CYANO GROUP - A method for preparing a functionalized polymer, the method comprising the steps of: (i) polymerizing monomer to form a reactive polymer, and (ii) reacting the reactive polymer with a protected oxime compound containing a cyano group. | 11-19-2015 |
| 20150368387 | METHOD FOR PRODUCING HYDROGENATED CONJUGATED DIENE POLYMER | 12-24-2015 |
| 20160009834 | Modified Conjugated Diene Polymer, Method for Producing Same, and Rubber Composition Using Same | 01-14-2016 |
| 20160053033 | METHOD OF PRODUCTION OF RADIAL CONJUGATED DIENE RUBBER - A method of production of radial conjugated diene rubber including a first step of causing 65 to 500 moles of isoprene to polymerize, in the presence of an alkali metal-reacted aromatic compound which is represented by the following general formula (1), with respect to 1 mole of an alkali metal in the alkali metal-reacted aromatic compound so as to obtain a radial isoprene polymer which has active ends and a second step of causing monomers which contain 1,3-butadiene or 1,3-butadiene and an aromatic vinyl compound to polymerize to the active ends of the radial isoprene polymer is provided. | 02-25-2016 |
| 20160096909 | Method for Producing Modified Conjugated Diene-Based Polymer, Modified Conjugated Diene-Based Polymer, and Modified Conjugated Diene-Based Polymer Composition - A method for producing a modified conjugated diene-based polymer having a good balance between the hysteresis loss properties and the wet skid resistance, practically sufficient abrasion resistance and breaking strength, and high processability when formed into a vulcanized product is provided. A method for producing a modified conjugated diene-based polymer, comprising: a polymerization step of polymerizing a conjugated diene compound, copolymerizing conjugated diene compounds, or copolymerizing a conjugated diene compound with an aromatic vinyl compound using an alkali metal compound or an alkaline earth metal compound as a polymerization initiator to obtain a conjugated diene-based polymer having an active end, and a modifying step of reacting a compound represented by following formula (1) with the active end of the conjugated diene-based copolymer. | 04-07-2016 |
| 20160096948 | RUBBER COMPOSITION AND PNEUMATIC TIRE - An object of the present invention is to provide a rubber composition which can further improve abrasion resistance without deterioration in energy efficiency, and a pneumatic tire using the rubber composition. The rubber composition comprises a polymer mixture obtained by modifying a polymer composed of at least one of a conjugated diene compound and an aromatic vinyl compound with a compound having at least one of an ester group and a carboxyl group; at least one of triamines; and silica, the polymer mixture having a weight-average molecular weight of 1.0×10 | 04-07-2016 |
| 20160102193 | RUBBER COMPOSITION FOR TIRES AND PNEUMATIC TIRE - The present invention aims to provide rubber compositions for tires that contain a natural rubber achieving a balanced improvement in abrasion resistance, breaking performance, and processability to achieve a balanced improvement in abrasion resistance, breaking performance, and processability, and also provide pneumatic tires containing such rubber compositions for tires. Included is a rubber composition for tires comprising a modified natural rubber prepared by treating natural rubber latex with a proteolytic enzyme, and then treating the treated natural rubber latex with a lipolytic enzyme and/or a phospholipid degrading enzyme. Also included is a rubber composition for tires, comprising a modified natural rubber prepared by centrifuging natural rubber latex to recover a latex fraction comprising latex particles having an average particle size of 0.25 μm or less. | 04-14-2016 |
| 20160108141 | SULFUR-FREE, ZINC-FREE CURE SYSTEM FOR HALOBUTYL AND HALOGEN CONTAINING POLYMERS - This invention discloses a sulfur free and ZnO free cross-linking composition comprising a multifunctional phosphine crosslinking agent and halobutyl polymers or halogen containing polymers. | 04-21-2016 |
| 20160159957 | MODIFIED CONJUGATED DIENE POLYMER, METHOD FOR PREPARING SAME, AND RUBBER COMPOSITION CONTAINING SAME - Disclosed is a method of preparing a modified conjugated diene-based polymer, including (a) polymerizing a conjugated diene monomer, or a conjugated diene monomer and an aromatic vinyl monomer, using the compound represented by Chemical Formula 1 in the presence of a hydrocarbon solvent, thus forming an active polymer having an alkali metal end, and (b) coupling or reacting the active polymer with the compound represented by Chemical Formula 2. | 06-09-2016 |
| 20160176992 | MODIFIED DIENE ELASTOMER COMPRISING A DIENE ELASTOMER COUPLED BY AN AMINOALKOXYSILANE COMPOUND AND HAVING AN AMINE FUNCTION AT THE CHAIN END, AND RUBBER COMPOSITION COMPRISING SAME | 06-23-2016 |
| 20160176993 | COUPLED DIENE ELASTOMER HAVING A SILANOL FUNCTION IN THE MIDDLE OF THE CHAIN AND HAVING AN AMINE FUNCTION AT THE CHAIN END, AND RUBBER COMPOSITION COMPRISING SAME | 06-23-2016 |
| 20160177011 | MODIFIED CONJUGATED DIENE-BASED POLYMER, METHOD FOR PREPARING SAME, AND RUBBER COMPOSITION COMRISING SAME | 06-23-2016 |
