Solid Polymer From Ethylenic Reactants Only Is Derived From Plural Unsaturated Hydrocarbon Patents (Class 525/105)
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Publication number: 20090203843Abstract: A modified conjugated diene polymer comprises a modifying group based on a low molecular weight compound having two or more tertiary amino groups and one or more alkoxysilyl groups in a molecule which bonds to a conjugated diene polymer obtained by polymerization of a conjugated diene compound or a conjugated diene polymer obtained by copolymerization of a conjugated diene compound and an aromatic vinyl compound. The process for producing the modified conjugated diene polymer comprises the steps of: polymerizing a conjugated diene compound or copolymerizing a conjugated diene compound and an aromatic vinyl compound in a hydrocarbon solvent using an alkali metal initiator and/or an alkaline earth metal initiator; and reacting active terminals of the resulting polymer with a low molecular weight compound having two or more tertiary amino groups and one or more alkoxysilyl groups in the molecule.Type: ApplicationFiled: July 19, 2007Publication date: August 13, 2009Inventors: Ryoko Fukuoka, Haruo Yamada, Norifusa Ishimura
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Publication number: 20090202711Abstract: A release agent composition to prevent sticking and facilitate separation of surfaces, such as patterns and core boxes from foundry molds and cores comprises (a) a styrene-diene block copolymer; (b) a functional silicone; (c) a solvent; and optionally, one or both of (d) a catalyst and (e) a crosslinking agent. Further is provided a method to facilitate separation of a workpiece from a substrate comprising applying the release agent composition to a surface of the workpiece, the substrate or both. In one particular embodiment, the method improves the release of a mold or a core from a pattern or a core box.Type: ApplicationFiled: April 13, 2009Publication date: August 13, 2009Inventors: Casey Lynn Elkins, Robert Harvey Moffett, Leonard George Testa
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Patent number: 7560513Abstract: A composition is provided for use with an unsaturated elastomer. The composition may include a sulfur-functional linear polyorganosiloxane. The sulfur-functional linear polyorganosiloxane may include a chemically protected sulfur group. Under certain conditions, the sulfur group may react with the unsaturated elastomer. The invention includes embodiments that may relate to methods of making and using the sulfur-functional linear polyorganosiloxane in elastomer compositions.Type: GrantFiled: December 16, 2005Date of Patent: July 14, 2009Assignee: Continental AGInventors: Norberto Silvi, Robert James Perry, Ben Purushotam Patel, Paul Burchell Glaser, Brennan Alexander Smith
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Publication number: 20090169813Abstract: A one-component, moisture-curing silicone rubber roof coating or sealant is manufactured using approximately 5-30% recycled EPDM rubber fill. The coating can be incorporated with a polyurethane foam insulation layer to form a roof assembly. Preferably, the EPDM roofing material is removed from an existing structure. It is processed forming powder on the order 50-200 mesh particle size and incorporated into a solvent-free silicone polymer to form a coating or sealant.Type: ApplicationFiled: October 30, 2008Publication date: July 2, 2009Inventor: Richard A. West
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Patent number: 7553899Abstract: The present invention provides a flame retardant resin composition comprising the following component (A), component (B), component (C) and component (D), in which 0.1 to 50 parts by mass of the component (B), 0.001 to 30 parts by mass of the component (C) and 0.1 to 50 parts by mass of the component (D) are blended with 100 parts by mass of the component (A). Component (A): A rubber-modified styrene resin obtained by (co)polymerizing an aromatic vinyl compound or an aromatic vinyl compound and another vinyl monomer copolymerizable with the aromatic vinyl compound in a presence of a rubber-like polymer; Component (B): A thermally expandable graphite; Component (C): A layered clay material modified by a water-soluble polymer; and Component (D): At least one selected from the group consisting of silicone compounds, boron oxides, aminotriazine sulfate compounds and aminotriazine compounds. The resin composition is excellent in flame retardance and impact resistance.Type: GrantFiled: June 3, 2005Date of Patent: June 30, 2009Assignees: Techno Polymer Co., Ltd., LG Chem, Ltd.Inventors: Masaaki Mawatari, Sung-Ho Lee, Young-Ho Choi
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Publication number: 20090131591Abstract: Moisture curable alkoxysilyl-functional polymers crosslinkable to elastomers having improved recovery properties are prepared by incorporating in the curable composition, both an aminoalkylalkoxysilane and an epoxyalkylalkoxysilane.Type: ApplicationFiled: May 14, 2007Publication date: May 21, 2009Applicant: WACKER CHEMIE AGInventors: Wolfram Schindler, Elke Schwiebacher
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Publication number: 20090111943Abstract: A thermoplastic composition comprising, based on the total weight of the thermoplastic composition, from 0.1 to 30 weight percent of an inorganic filler composition comprising an inorganic filler-polyorganosiloxane composite; up to 80 weight percent of a polycarbonate; and from 1 to 25 weight percent of an impact modifier. Methods of preparing the compositions and articles comprising the compositions are described.Type: ApplicationFiled: October 31, 2007Publication date: April 30, 2009Inventors: Shrikant Bhat, Sriram Krishnamurthy, Roopali Rai, Sandeep Tyagi, Andries Adriaan Volkers
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Patent number: 7521509Abstract: The invention provides a fluoropolymer composition capable of improving the characteristics of the cured material obtained therefrom. A fluoropolymer composition comprising a methylene group-containing fluoropolymer (A) and a hydrosilylation catalyst (B), wherein the methylene group-containing fluoropolymer (A) has methylene group-containing repeating units in the main chain thereof and is capable of hydrosilylation in the presence of the hydrosilylation catalyst (B) and one terminus of the chain is a carbon-carbon double bond or an Si—H group and the other terminus of the chain is an Si—H group or a carbon-carbon double bond.Type: GrantFiled: December 4, 2003Date of Patent: April 21, 2009Assignee: Daikin Industries, Ltd.Inventors: Tatsuya Morikawa, Manabu Fujisawa, Mitsuru Kishine
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Publication number: 20090088520Abstract: A tire with a rubber containing component compound of a copolymer rubber having pendant hydroxyl groups; and a non-sulfur containing silane.Type: ApplicationFiled: December 11, 2008Publication date: April 2, 2009Inventors: Georges Marcel Victor Thielen, Frank Schmitz
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Patent number: 7510670Abstract: Free flowing filler composition based on organofunctional silane and/or mixtures of organofunctional silanes possessing mercaptan and blocked mercaptan functionality. The invention also relates to articles of manufacture, particularly tires, made from the elastomer compositions described herein.Type: GrantFiled: February 21, 2006Date of Patent: March 31, 2009Assignee: Momentive Performance Materials Inc.Inventors: Antonio Chaves, Eric R. Pohl, Linda Vecere, Lesley Hwang
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Publication number: 20090081151Abstract: An olefin wax (A) is (i) a copolymer (A1) obtained by copolymerizing ethylene and at least one diene or a copolymer (A2) obtained by copolymerizing ethylene, at least one olefin selected from ?-olefins of 3 to 12 carbon atoms and at least one diene; wherein (ii) the content of unsaturated groups per one molecule is in the range of 0.5 to 3.0 groups; (iii) the density is in the range of 870 to 980 kg/m3; (iv) the melting point is in the range of 70 to 130° C.; (v) the number-average molecular weight is in the range of 400 to 5,000; and (vi) the ratio (Mw/Mn) of the weight-average molecular weight to the number-average molecular weight is not more than 4.0. A silicone-modified olefin wax can be obtained by reacting hydrogen silicone with the olefin wax (A). Cosmetics contain the silicone-modified olefin wax.Type: ApplicationFiled: November 25, 2008Publication date: March 26, 2009Applicants: MITSUI CHEMICALS, INC., SHIN-ETSU CHEMICAL CO., LTD.Inventors: Hideo Toyoda, Hirotaka Uosaki, Koujiro Kan, Shoji Ichinohe, Toru Shimizu
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Patent number: 7482404Abstract: This invention discloses a process for manufacturing an elastomeric article by liquid injection molding, said process comprising the steps of: (I) heating a curable composition comprised of (1) a liquid polymer comprised of repeat units that are derived from a conjugated diolefin monomer, wherein said liquid polymer has a weight average molecular weight which is within the range of 5,000 to 100,000, and wherein the liquid polymer is functionalized with an amine moiety, (2) a carbonyl inhibited platinum catalyst, and (3) a tetrakis(dialkyl siloxy) silane crosslinking agent, to a temperature which is within the range of 30° C. to 100° C.; (II) injecting the heated curable composition into a mold at a temperature which is within the range of 100° C. to 210° C. to produce the elastomeric article; and (III) removing the elastomeric article from the mold.Type: GrantFiled: September 15, 2004Date of Patent: January 27, 2009Assignee: The Goodyear Tire & Rubber CompanyInventors: Lawson Gibson Wideman, Vanessa Marika Guscoff, Michael Joseph Rachita
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Patent number: 7476708Abstract: A tire with a rubber containing component compound of a copolymer rubber having pendant hydroxyl groups; and a non-sulfur containing silane.Type: GrantFiled: December 21, 2006Date of Patent: January 13, 2009Assignee: The Goodyear Tire & Rubber CompanyInventors: Georges Marcel Victor Thielen, Frank Schmitz
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Publication number: 20080306213Abstract: A process for preparing a rubber composition comprises: (a) forming a mixture of: (i) at least one thiocarboxyl-functional hydrolyzable silane, (ii) at least one rubber containing carbon-carbon double bonds, (iii) at least one silane-reactive filler, (iv) at least one activating agent, and (v) water; (b) mixing the composition formed in step (a) under reactive-mechanical-working conditions and in the absence of vulcanizing agent(s); (c) adding at least one vulcanizing agent (vi) to the composition of step (b); (d) mixing the composition of step (c) under non-reactive-mechanical-working conditions; and, (e) optionally, curing the rubber composition of step (d).Type: ApplicationFiled: June 5, 2007Publication date: December 11, 2008Inventors: Ping Jiang, Robert James Perry
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Patent number: 7462677Abstract: An initiator is presented for anionically polymerizing monomers, to provide a functional head group on the polymer. A polymer having a functional head group derived from a sulfur containing anionic initiator, and optionally as additional functional group resulting from the use of a functional terminating reagent, coupling agent or linking agent is also provided. A method is presented for anionically polymerizing monomers comprising the step of polymerizing the monomers with a sulfur containing anionic initiator to provide a functional head group on the polymer. An elastomeric compound, comprising a functional polymer and filler is also described. Also provided is a tire having decreased rolling resistance resulting from a tire component containing a vulcanizable elastomeric compound.Type: GrantFiled: September 13, 2007Date of Patent: December 9, 2008Assignee: Bridgestone CorporationInventors: Terrence E. Hogan, William Hergenrother, Yuan-Yong Yan, David Lawson
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Patent number: 7449518Abstract: A novel process for preparation of block copolymers containing, for example, alpha-methyl-styrene/styrene glassy blocks is claimed, where the glassy blocks contain 25-50 mol % alpha-methyl-styrene and have Tg values in the range of 120 to 140° C. The copolymerization process, which is conducted at 35 to 60° C. and relatively high solids contents and with continuous addition of styrene, results in very high conversions of the alpha-methyl-styrene. Selectively hydrogenated block copolymers having high glassy block Tg values are also disclosed and claimed as well as high service temperature elastomeric compositions comprising the block copolymer and an olefin polymer or copolymer.Type: GrantFiled: March 20, 2007Date of Patent: November 11, 2008Assignee: Kraton Polymers U.S. LLCInventors: Robert C. Bening, Carl L. Willis, Xavier Muyldermans
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Publication number: 20080275184Abstract: A conjugated diene rubber composition comprising (A) 5-95 wt. % of a conjugated diene rubber having a structure such that at least three conjugated diene polymer chains are bonded together through a specific polyorganosiloxane having groups containing alkylene glycol repeating units and (B) 95-5 wt. % of a conjugated diene rubber having reacted with a compound having in the molecule a functional group selected from >C?O, >C?S, amino, imino, epoxy, pyridyl, alkoxyl and halogeno. This rubber composition gives, when silica is incorporated therein, a vulcanizable rubber composition having good processability and giving a rubber vulcanizate exhibiting sufficiently reduced heat build up, and having good wet-grip property and good abrasion resistance.Type: ApplicationFiled: September 1, 2004Publication date: November 6, 2008Inventors: Takeshi Karato, Masao Nakamura, Koichi Endo
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Patent number: 7446151Abstract: The present invention relates to a continuous process for producing polymers at conversions ranging from 50% to 95% having a Mooney viscosity of at least 25 Mooney-units and a gel content of less than 15 wt. % containing repeating units derived from at least one isoolefin monomer, more than 4.1 mol % of repeating units derived from at least one multiolefin monomer and optionally further copolymerizable monomers in the presence of AlCl3 and a suitable proton source (e.g. water) or cationogen and at least one multiolefin cross-linking agent wherein the process is conducted in the absence of transition metal compounds and organic nitro compounds.Type: GrantFiled: August 31, 2007Date of Patent: November 4, 2008Assignee: Lanxess, Inc.Inventors: Rui Resendes, Gabor Kaszas, Mark J. Drewitt, Stephan Glander, Gerhard Langstein, Martin Bohnenpoll
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Patent number: 7427651Abstract: A process for producing a conjugated diene copolymer rubber which comprises initiating a copolymerization reaction in a reaction system containing a first conjugated diene compound and a first aromatic vinyl compound and completing the reaction, adding a first polyfunctional monomer to the reaction system, optionally further adding a second conjugated diene compound and a second aromatic vinyl compound, and further conducting copolymerization reaction, and adding a modifier to the reaction system to react the modifier with the copolymer. A rubber composition having excellent processability, exhibiting sufficient hardness even after vulcanization, and possessing reduced rolling resistance can be obtained.Type: GrantFiled: July 21, 2005Date of Patent: September 23, 2008Assignee: JSR CorporationInventors: Masahiro Shibata, Naokazu Kobayashi, Toshihiro Tadaki
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Patent number: 7417089Abstract: This invention discloses a process for manufacturing an elastomeric article by liquid injection molding, wherein the article has improved tensile strength and improved tear strength, said process comprising the steps of: (I) heating a curable composition comprised of (1) a liquid polymer comprised of repeat units that are derived from a conjugated diolefin monomer, wherein said liquid polymer has a weight average molecular weight which is within the range of 5,000 to 100,000, and wherein the liquid polymer is functionalized with an ether moiety, (2) a carbonyl inhibited platinum catalyst, and (3) a tetrakis(dialkyl siloxy) silane crosslinking agent, to a temperature which is within the range of 30° C. to 100° C.; (II) injecting the heated curable composition into a mold at a temperature which is within the range of 100° C. to 210° C. to produce the elastomeric article; and (III) removing the elastomeric article from the mold.Type: GrantFiled: October 12, 2006Date of Patent: August 26, 2008Assignee: The Goodyear Tire & Rubber CompanyInventors: Michael Joseph Rachita, Vanessa Marika Guscoff, Lawson Gibson Wideman
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Publication number: 20080161463Abstract: This invention relates to novel free-flowing filler compositions containing silated cyclic core polysulfide coupling agents, and to a rubber containing the filler composition.Type: ApplicationFiled: December 28, 2006Publication date: July 3, 2008Inventors: Richard W. Cruse, W. Michael York, Eric R. Pohl, Prashant Joshi
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Publication number: 20080132644Abstract: Rubber composition based on at least one diene elastomer, a polymeric filler as reinforcing filler and a coupling agent for bonding between the polymeric filler and the elastomer, characterized in that said polymeric filler comprises nanoparticles of a polyvinylaromatic (PVAr) carrying a functional group denoted by Z of formula ?Si—X, X representing a hydroxyl or hydrolyzable group. The PVAr is especially a copolymer of styrene, ethylvinylbenzene, divinylbenzene and trimethoxysilylpropyl(meth)acrylate, being in the form of nanobeads, the diameter of which is between 10 and 100 nm. This polymeric filler, thanks to a very low density, allows the weight of the compositions of the invention to be reduced without degrading the reinforcement, and with an appreciable reduction in hysteresis.Type: ApplicationFiled: December 30, 2005Publication date: June 5, 2008Applicant: Michelin Recherche Et Technique S.A.Inventors: Arnaud Lapra, Sylvie Gandon-Pain, Franck Varagniat
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Publication number: 20080114126Abstract: A method for preparing a thermoplastic vulcanizate, the method comprising dynamically vulcanizing a rubber within a blend that includes the rubber and a thermoplastic polymer, where said dynamically vulcanizing is effected with a cure system that includes a hydrosilating agent and a catalyst, where the hydrosilating agent includes a compound including at least 3 silicon hydride groups defined by the formula where each R is independently a monovalent organic group or hydrogen, and where the silicon atoms of the respective silicon hydride groups are spatially separated by at least 6 atoms.Type: ApplicationFiled: November 10, 2006Publication date: May 15, 2008Inventors: Edward J. Blok, Maria D. Ellul, Alfred V. Pickett, Carl Voellmecke
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Patent number: 7351763Abstract: A tire is provided having a circumferential tread of a diene-based rubber composition reinforced with a silica-containing carbon black which contains domains of silica on its surface prepared by extended reactive mixing of said silica-containing carbon black with a coupling agent together with at least one elastomer. Said silica-containing carbon black is a carbon black which contains silica domains on its surface and said silica contains hydroxyl groups (e.g. silanol groups) on its surface, wherein said silica domains cover at least 50 percent of the carbon black surface. Said coupling agent is a bis(3-triethoxysilylpropyl) polysulfide having an average of from 2 to 4, alternately a more limited average of from 2 to 3 or from 2 to 2.6, connecting sulfur atoms in its polysulfidic bridge. In one aspect of the invention, it is preferred that said coupling agent is exclusive of a bis(3-trialkoxysilylalkyl) polysulfide having an average of greater than 3.5 sulfur atoms in its polysulfidic bridge.Type: GrantFiled: July 11, 2003Date of Patent: April 1, 2008Assignee: The Goodyear Tire & Rubber CompanyInventors: Tom Dominique Linster, Giorgio Agostini
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Patent number: 7351774Abstract: The present invention relates to a modified crumb rubber particle having carbon to silicon bonds created by the reaction of the unsaturation in the crumb rubber particle and silicon hydride, with or without the use of a catalyst. Bound silicon content ranges from about 0.1% to 10% by weight. The silicon-modified crumb rubber can be used as is or a reinforcing filler in formulations. Typically the silicon-modified crumb rubber is used in up to 25% by weight of the total rubber present in virgin rubber compositions.Type: GrantFiled: September 15, 2005Date of Patent: April 1, 2008Assignee: Michelin Recherche et Technique S.A.Inventors: K. Prasanna U. Perera, Dennis W. Smith, Jr., J. Cal Moreland, Kevin Wallace
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Patent number: 7351768Abstract: This invention discloses a process for manufacturing an elastomeric article by liquid injection molding, wherein the article has improved tensile strength and improved tear strength, said process comprising the steps of: (I) heating a curable composition comprised of (1) a liquid polymer comprised of repeat units that are derived from a conjugated diolefin monomer, wherein said liquid polymer has a weight average molecular weight which is within the range of 5,000 to 100,000, and wherein the liquid polymer is functionalized with an ether moiety, (2) a carbonyl inhibited platinum catalyst, and (3) a tetrakis(dialkyl siloxy) silane crosslinking agent, to a temperature which is within the range of 30° C. to 100° C.; (II) injecting the heated curable composition into a mold at a temperature which is within the range of 100° C. to 210° C. to produce the elastomeric article; and (III) removing the elastomeric article from the mold.Type: GrantFiled: October 13, 2006Date of Patent: April 1, 2008Assignee: The Goodyear Tire & Rubber CompanyInventors: Michael Joseph Rachita, Vanessa Marika Guscoff, Lawson Gibson Wideman
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Patent number: 7342070Abstract: Disclosed are a conjugated diolefin (co) polymer rubber formed from either a conjugated diolefin or a conjugated diolefin and an aromatic vinyl compound, wherein the (co) polymer rubber has a primary amino group and an alkoxysilyl group which are bonded to a (co) polymer chain; a process for producing the same; a rubber composition; a composite; and a tire. The (co) polymer rubber has satisfactory processability, and can give an automotive tire tread having a balance among wear resistance, failure characteristics, low hysteresis loss and wet-skid characteristics.Type: GrantFiled: September 25, 2002Date of Patent: March 11, 2008Assignee: JSR CorporationInventors: Keisuke Tsukimawashi, Naokazu Kobayashi, Tsukasa Toyoshima, Toshihiro Tadaki, Kouta Taniguchi
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Patent number: 7319123Abstract: An initiator is presented for anionically polymerizing monomers, to provide a functional head group on the polymer. A polymer having a functional head group derived from a sulfur containing anionic initiator, and optionally as additional functional group resulting from the use of a functional terminating reagent, coupling agent or linking agent is also provided. A method is presented for anionically polymerizing monomers comprising the step of polymerizing the monomers with a sulfur containing anionic initiator to provide a functional head group on the polymer. An elastomeric compound, comprising a functional polymer and filler is also described. Also provided is a tire having decreased rolling resistance resulting from a tire component containing a vulcanizable elastomeric compound.Type: GrantFiled: December 2, 2006Date of Patent: January 15, 2008Assignee: Bridgestone CorporationInventors: Terrence E. Hogan, William Hergenrother, Yuan-Yong Yan, David Lawson
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Patent number: 7288594Abstract: Provided is a process for producing a modified polymer, characterized by carrying out primary modification in which a hydrocarbyloxysilane compound is reacted with the active site of a polymer having an active site of an organic metal type in a molecule and then carrying out secondary modification in which the hydrocarbyloxysilane compound is further reacted therewith. This makes it possible to provide a modified polymer which enhances interactions with silica and carbon black when used for both of silica-blended and carbon black-blended rubber compositions and which elevates the fracture characteristic, the abrasion resistance and the low heat buildup property at the same time and can exhibit a good workability.Type: GrantFiled: November 29, 2002Date of Patent: October 30, 2007Assignee: Bridgestone CorporationInventors: Youichi Ozawa, Hajime Kondou, Noriko Endou
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Patent number: 7271218Abstract: This invention discloses a process for manufacturing an elastomeric article by liquid injection molding, wherein the article has improved tensile strength and improved tear strength, said process comprising the steps of: (I) heating a curable composition comprised of (1) a liquid polymer comprised of repeat units that are derived from a conjugated diolefin monomer, wherein said liquid polymer has a weight average molecular weight which is within the range of 5,000 to 100,000, and wherein the liquid polymer is functionalized with an ether moiety, (2) a carbonyl inhibited platinum catalyst, and (3) a tetrakis(dialkyl siloxy)silane crosslinking agent, to a temperature which is within the range of 30° C. to 100° C.; (II) injecting the heated curable composition into a mold at a temperature which is within the range of 100° C. to 210° C. to produce the elastomeric article; and (III) removing the elastomeric article from the mold.Type: GrantFiled: June 25, 2004Date of Patent: September 18, 2007Assignee: The Goodyear Tire & Rubber CompanyInventors: Lawson Gibson Wideman, Vanessa Marika Guscoff, Michael Joseph Rachita
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Patent number: 7238746Abstract: A golf ball, typically its core, is manufactured by hot molding a rubber composition comprising a base rubber, an unsaturated carboxylic acid or a metal salt thereof, and an organic peroxide, the base rubber comprising a methacryloxy or acryloxy-modified silicone polymer and optionally, a peroxide-crosslinkable rubber. The golf ball exhibits high rebound and prevents the rebound property from declining at low temperatures.Type: GrantFiled: October 6, 2004Date of Patent: July 3, 2007Assignee: Bridgestone Sports Co., Ltd.Inventors: Nobuyuki Kataoka, Hiroshi Higuchi, Atsushi Nanba
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Patent number: 7223817Abstract: The present invention relates to a vinyl polymer terminated in a silanol group, a hydrolyzable silyl group or an acrylic functional group, to a method of producing a vinyl polymer having a hydrolyzable silyl group at one or more termini thereof which comprises reacting a vinyl polymer having a silanol group at one or more termini thereof with a silicon compound having two or more silicon atom-bound hydrolyzable groups, and a method of producing a vinyl polymer having an acrylic functional group at one or more termini thereof which comprises reacting a vinyl polymer having a silanol group at one or more termini thereof with a silicon compound represented by the general formula (3): XSiR2—G—O—C(O)C(L)?CH2 ??(3) wherein X is a hydrolyzable group.Type: GrantFiled: May 23, 2005Date of Patent: May 29, 2007Assignee: Kaneka CorporationInventors: Yoshiki Nakagawa, Kenichi Kitano, Masayuki Fujita
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Patent number: 7220798Abstract: Lithium-terminated polymers of one or more conjugated dienes and of one or more mono alkenyl arenes are coupled by reaction with an alkoxy silane coupling agent having the formula Rx—Si—(OR?)y, where x is 0 or 1, x+y=4, R and R? are the same or different, R is selected from aryl hydrocarbon radicals, linear alkyl hydrocarbon radicals and branched alkyl hydrocarbon radicals, and R? is selected from linear and branched alkyl hydrocarbon radicals, such that the resulting polymer composition contains less than about ten weight percent of uncoupled polymer diblock. The polymer compositions are subsequently selectively hydrogenated, and are useful in a variety of compounds and end use applications.Type: GrantFiled: February 28, 2005Date of Patent: May 22, 2007Assignee: Kraton Polymers US LLCInventors: Harvey E. Atwood, Robert C. Bening, Mark Hageman, Dale L. Handlin, Jr., Adrie A. van der Huizen, Kimberly A. Johnson, Carl L. Willis
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Patent number: 7208548Abstract: The crosslinkable rubber composition of the invention is crosslinkable by hot air, and a hot-air crosslinked rubber sheet thereof has no scratch on the surface in a hardness test using a pencil of HB and has a compression set of not more than 70% after a heat treatment at 150° C. for 22 hours. The rubber composition comprises an ethylene/?-olefin/non-conjugated polyene random copolymer rubber comprising a specific vinyl end group-containing norbornene compound, a SiH group-containing compound having at least two SiH groups in one molecule, and if necessary, an addition reaction catalyst comprising a platinum group element and a reaction inhibitor.Type: GrantFiled: December 3, 2004Date of Patent: April 24, 2007Assignee: Mitsui Chemicals, Inc.Inventors: Takashi Hakuta, Masaaki Kawasaki, Yoshiharu Kikuchi, Tsutomu Nakamura, Satao Hirabayashi, Takeo Yoshida
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Patent number: 7205360Abstract: A preparation process for a copolymer having two blocks usable in a sulphur-cross-linkable rubber composition of reduced hysteresis in the cross-linked state, such a block copolymer in which one of the blocks is a polyisoprene and the other a diene elastomer other than a polyisoprene, and this rubber composition for tire treads. A process for the preparation of this copolymer involves copolymerizing one or more monomers including a conjugated diene other than isoprene using a catalytic system including at least one hydrocarbon solvent, a compound A of a metal of group IIIA, a compound B of an alkaline-earth metal and a polymeric initiator C having a C—Li bond which is constituted of a monolithiated polyisoprene intended to form the polyisoprene block, the number-average molecular weight Mn1 of the polyisoprene block being between 2,500 and 20,000 g/mol.Type: GrantFiled: April 30, 2004Date of Patent: April 17, 2007Assignee: Michelin Recherche et Technique S.A.Inventors: Pierre Robert, Jean-Michel Favrot, Pierre Lesage
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Patent number: 7195720Abstract: The invention provides a curable composition for a heat conductive material, having an excellent durability, a satisfactory heat conductive property and a high productivity with easily controllable surface tackiness, a heat conductive material obtained from such curable composition and a method for controlling the surface tackiness of the composition after curing. The curable composition for the heat conductive material is formed by a curable composition of heat curable type based on crosslinking by a hydrosilylation reaction and including a saturated hydrocarbon polymer containing at least an alkenyl group in a molecule, a curing agent containing at least two hydrosilyl groups in a molecule and a hydrosilylation catalyst, to which a heat conductive filler is incorporated, thereby providing a flexible elastomer with a satisfactory heat conductivity and with an easily controllable surface tackiness.Type: GrantFiled: February 11, 2003Date of Patent: March 27, 2007Assignee: Kaneka CorporationInventor: Masashi Sakaguchi
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Patent number: 7186776Abstract: The present invention relates to a sulfur-cross-linkable elastomeric composition that is useful for the manufacture of tires. This elastomeric composition is based on at least one isoprene elastomer (in particular natural rubber), a reinforcing inorganic filler (in particular, silica), and an (inorganic filler/isoprene elastomer) coupling agent. The coupling agent is a multifunctional polyorganosiloxane (POS), which comprises functions denoted as “Y” and “X”, wherein the Y function is at least one hydroxyl or hydrolyzable function grafted to the silicon atoms of the coupling agent and the X function is a group bearing at least one activated ethylene double bond and is grafted to the silicon atoms of the coupling agent. This POS is, in particular, a POS having an imide, acid or ester function, the ethylene double bond of which is activated by at least one adjacent carbonyl group (—C?O).Type: GrantFiled: September 22, 2004Date of Patent: March 6, 2007Assignee: Michelin Recherche et Technique S.A.Inventors: Jean-Claude Tardivat, Salvatore Pagano, Christel Thonier, Nathalie Guennouni
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Patent number: 7163975Abstract: The invention relates to a tire having at least one component (e.g. tread) of a rubber composition comprised of a composite of styrene/butadiene elastomer and functionalized styrene/butadiene elastomer containing an internal silanol and/or siloxy group therein with pendent silanol and/or alkoxy groups of a polymodal (e.g. bimodal) molecular weight distribution and a dispersion therein of silica aggregates of which a portion thereof contain a plurality of hydroxyl groups on their surface in a form of geminal hydroxyl groups. In one aspect, said silica aggregates may be pre-treated to reduce said hydroxyl groups on their surface prior to blending with said silanol and/or siloxy functionalized elastomer.Type: GrantFiled: July 28, 2003Date of Patent: January 16, 2007Assignee: The Goodyear Tire & Rubber CompanyInventors: David John Zanzig, Georges Marcel Victor Thielen, John Joseph Andre Verthe
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Patent number: 7153919Abstract: An initiator is presented for anionically polymerizing monomers, to provide a functional head group on the polymer. A polymer having a functional head group derived from a sulfur containing anionic initiator, and optionally as additional functional group resulting from the use of a functional terminating reagent, coupling agent or linking agent is also provided. A method is presented for anionically polymerizing monomers comprising the step of polymerizing the monomers with a sulfur containing anionic initiator to provide a functional head group on the polymer. An elastomeric compound, comprising a functional polymer and filler is also described. Also provided is a tire having decreased rolling resistance resulting from a tire component containing a vulcanizable elastomeric compound.Type: GrantFiled: October 30, 2003Date of Patent: December 26, 2006Assignee: Bridgestone CorporationInventors: Terrence E. Hogan, William Hergenrother, Yuan-Yong Yan, David Lawson
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Patent number: 7132170Abstract: An adhesive coating composition for fabric substrates, such as automotive airbags. The coating is formed from a blend including a silicone polymer and a second polymer which is thermodynamically compatible with silicone. In particular, the second polymer has a cohesion parameter (?/MPa1/2) that is similar to that of silicone so that any thermodynamic barrier to the second polymer dissolving in silicone is removed.Type: GrantFiled: July 29, 2003Date of Patent: November 7, 2006Assignee: Milliken & CompanyInventor: Richard Henry Parker
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Patent number: 7129294Abstract: A vinyl polymer which has at least one terminal functional group per molecule and has a ratio of weight average molecular weight to number average molecular weight of less than 1.8 as determined by gel permeation chromatography, said terminal functional group being a crosslinking silyl group, an alkenyl group, or a hydroxyl group.Type: GrantFiled: May 31, 2001Date of Patent: October 31, 2006Assignee: Kaneka CorporationInventors: Yoshiki Nakagawa, Kenichi Kitano, Masato Kusakabe
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Patent number: 7122599Abstract: The invention relates to coating compositions having anti-adhesion and dirt repellency properties, these compositions being admixed as additive with from 0.1 to 10% by weight, based on the solids content of the coating composition, of a branched polymer which possesses a weight-average molecular weight of from 2000 to 200,000 and comprises a polymeric base molecule and also polydiorganosiloxane side chains which are bonded covalently to the base molecule via Si—C bonds, have a weight-average molecular weight of between 1000 and 30,000, and whose fraction of the total weight of the branched polymer is from 5 to 25% by weight. The present invention further relates to polymeric moulding compounds having anti-adhesion and dirt repellency properties, to which this branched polymer is added as additive in an amount of from 0.1 to 10% by weight, based on the total weight of the polymeric moulding compounds.Type: GrantFiled: September 28, 2001Date of Patent: October 17, 2006Assignee: BYK-Chemie GmbHInventors: Karlheinz Haubennestel, Alfred Bubat, Albert Frank, Axel Woocker, Udo Krappe
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Patent number: 7119145Abstract: Pre-formed polymer particles are chemically modified by free radical-initiated surface graft modification. The resulting resin is specifically adapted to provide enhanced chromatographic performance throughout chromatographic separations.Type: GrantFiled: January 24, 2003Date of Patent: October 10, 2006Assignee: Phenomenex, Inc.Inventors: Arthur R. Dixon, Emmet E. Welch, Shahana Huq
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Patent number: 7067605Abstract: An organic polymer is provided which has an end structure expressed by general formula (1): In the formula, R1 represents an alkyl group having a carbon number in the range of 1 to 20, an aryl group having a carbon number in the range of 6 to 20, an aralkyl group having a carbon number in the range of 7 to 20, or a triorganosiloxy group expressed by (R?)3SiO—. R2 represents an alkyl group having a carbon number in the range of 1 to 20, an aryl group having a carbon number in the range of 6 to 20, an aralkyl group having a carbon number in the range of 7 to 20, an alkoxy group having a carbon number in the range of 1 to 20, or a triorganosiloxy group expressed by (R?)3SiO—. X represents a monovalent organic group having an epoxy group and/or an oxetanyl group. m represents an integer in the range of 0 to 20. n represents an integer of 1, 2, or 3.Type: GrantFiled: April 8, 2003Date of Patent: June 27, 2006Assignee: Kaneka CorporationInventors: Yoshiyuki Kohno, Hidetoshi Odaka, Hiroshi Ando
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Patent number: 7056987Abstract: The present invention refers to a process for preparing cross-linked polyolefins, comprising the steps of adding a diazido compound of the formula (I) N?N?N—X—R—X—N?N=N wherein R represents an aryl, alkyl or aralkyl group having 3 to 20 carbon atoms and X stands for —CO—, —O—CO— —SO2—, —PO2—, —PO3—, or —Si (?O)—, and a peroxide compound of the general formula (II) R1—X1—OO—X2—R2 wherein R1 and R2 are the same or different and represent hydrogen, an aryl, alkyl or aralkyl group having 3 to 20 carbon atoms and optionally comprising further peroxide groups, wherein one of R1 and R2 can form a ring, and X1 and X2 are the same or different and stand for a direct bond, —CO2— or —CO— to a polyolefin in powder or pellet form; mixing the product to obtain a mixture; extruding the mixture in an extruder at a temperature above the decomposition temperature of the diazido compound of formula (I) and of the peroxide compound of formula (II).Type: GrantFiled: August 31, 2001Date of Patent: June 6, 2006Assignee: Borealis Technology OYInventors: Kjetil Borve, Keith Redford, Aage Stori
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Patent number: 7026399Abstract: A composition including a non-silicone material, a silicone material, and a crosslinking agent. The composition forms a structure selected from the group consisting of an interpenetrating network structure and a thermoplastic vulcanizate structure.Type: GrantFiled: September 15, 2003Date of Patent: April 11, 2006Assignee: Taylor Made Golf Company, Inc.Inventors: Hyun Jin Kim, Hong Guk Jeon
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Patent number: 6992147Abstract: A method for preparing a functionalized polymer comprising the steps of preparing a pseudo-living polymer by polymerizing conjugated diene monomer with a lanthanide-based catalyst, and reacting the pseudo-living polymer with at least one functionalizing agent defined by the formula (I) where A is a substituent that will undergo an addition reaction with a pseudo-living polymer, R1 is a divalent organic group, R2 is a monovalent organic group, and each R4, which may be the same or different, is a monovalent organic group or a substituent defined by —OR5 where R5 is a monovalent organic group, with the proviso that A, R1, R2, R4, and R5 are substituents that will not protonate a pseudo-living polymer. Also, the functionalized polymer and a vulcanizable composition containing the polymer.Type: GrantFiled: November 10, 2000Date of Patent: January 31, 2006Assignee: Bridgestone CorporationInventors: Yoichi Ozawa, H. Jerrold Miller, Koji Masaki, Tatsuo Fujimaki, Takuo Sone, Iwakazu Hattori, Koichi Morita
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Patent number: 6977281Abstract: A method for preparing a functionalized polymer comprising the steps of preparing a pseudo-living polymer by polymerizing conjugated diene monomer with a lanthanide-based catalyst, where said pseudo-living polymer is characterized by having greater than about 85 percent of the polymer in the cis microstructure and less than about 3 percent of the polymer is in the 1,2- or 3,4-microstructure, and reacting the pseudo-living polymer with at least one functionalizing agent defined by the formula (I) or (II) where Z is a substituent that will react or interact with organic or inorganic fillers; R1 is a single bond or a divalent organic group; R2 is a monovalent organic group or a divalent organic group that forms a cyclic organic group with R13 or R14; R3 is a single bond, a divalent organic group, or a trivalent organic group that forms a cyclic organic group with R4 or R5; R13 is a single bond, a divalent organic group, or a trivalent organic group that forms a cyclic organic group with R2 or R14; R4 is a moType: GrantFiled: November 10, 2000Date of Patent: December 20, 2005Assignee: Bridgestone CorporationInventors: Yoichi Ozawa, H. Jerrold Miller, Koji Masaki
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Patent number: 6949603Abstract: In one embodiment the invention is a polymerizable composition comprising a) an organoborane amine complex; b) one or more of monomers, oligomers or polymers having olefinic unsaturation which is capable of polymerization by free radical polymerization; c) one or more compounds, oligomers or prepolymers having a siloxane backbone and reactive moieties capable of polymerization; and d) a catalyst for the polymerization of the one or more compounds, oligomers or prepolymers having a siloxane backbone and reactive moieties capable of polymerization. This composition may further comprise a compound which causes the organoborane amine complex to disassociate.Type: GrantFiled: June 1, 2004Date of Patent: September 27, 2005Assignee: Dow Global Technologies Inc.Inventors: Mark F. Sonnenschein, Steven P. Webb, Benjamin L. Wendt, Daniel R. Harrington
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Patent number: 6930147Abstract: The present invention relates to a vinyl polymer terminated in a silanol group, a hydrolyzable silyl group or an acrylic functional group, to a method of producing a vinyl polymer having a hydrolyzable silyl group at one or more termini thereof which comprises reacting a vinyl polymer having a silanol group at one or more termini thereof with a silicon compound having two or more silicon atom-bound hydrolyzable groups, and a method of producing a vinyl polymer having an acrylic functional group at one or more termini thereof which comprises reacting a vinyl polymer having a silanol group at one or more termini thereof with a silicon compound represented by the general formula (3): XSiR2—G—O—C(O)C(L)?CH2??(3) wherein X is a hydrolyzable group.Type: GrantFiled: September 2, 1999Date of Patent: August 16, 2005Assignee: Kaneka CorporationInventors: Yoshiki Nakagawa, Kenichi Kitano, Masayuki Fujita