Vulcanized In The Presence Of A Chemical Treating Agent, E.g., Cured, Crosslinked, Etc. Patents (Class 525/332.5)
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Patent number: 8017696Abstract: Vulcanizable elastomeric compositions and vulcanizates are prepared by employing a titanium compound. The titanium compound is believed to enhance the reaction between a silica particle and a silica-reactive compound.Type: GrantFiled: January 13, 2006Date of Patent: September 13, 2011Assignee: Bridgestone CorporationInventors: Chenchy Jeffrey Lin, Christine Rademacher, Shunji Araki
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Patent number: 7976921Abstract: A release agent composition includes a poly(meth)acrylate (A) containing a structural unit (1) represented by the following formula (1); in which R1 represents hydrogen or a methyl group and R2 represents a long-chain alkyl group having 12 to 28 carbon atoms, a liquid polymer (B) and a crosslinking agent (C), wherein at least one of the poly(meth)acrylate (A) and the liquid polymer (B) has a reactive functional group, and the crosslinking agent (C) is a compound having a functional group capable of reacting with the reactive functional group.Type: GrantFiled: November 14, 2006Date of Patent: July 12, 2011Assignee: Lintec CorporationInventors: Shiori Beppu, Toshio Sugizaki
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Patent number: 7960474Abstract: A single-component high-temperature-curing reactive composition based on natural and/or synthetic elastomers having olefinic double bonds and on vulcanizing agents is provided. Such compositions contain at least one liquid polyene with a molecular weight between 400 and 80,000, preferably between 800 and 25,000; at least one block copolymer with at least one polyene block and at least one saturated block; and a vulcanizing system of sulfur and accelerators and/or quinone oximes, if applicable. Such high-temperature-curing reactive compositions are useful as single-component adhesives, sealant or coating compositions or sealing compounds in automobile body manufacture.Type: GrantFiled: August 19, 2008Date of Patent: June 14, 2011Assignee: Henkel AG & Co. KGaAInventors: Klaus Rappmann, Rainer Kohlstrung
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Patent number: 7928159Abstract: A process for providing interaction between particulate filler and a functionalized polymer involves a composition that includes at least three components: (1) a polymer that includes a functional group including an acidic cation of a primary or secondary amine functionality, (2) a material including a functionality capable of reacting with the acidic cation, and (3) particulate filler. The amine functionality from (1) is allowed to interact with (3) after being neutralized by the action of the acid-reactive functionality from (2). The process is useful in the formation of vulcanizates and articles made therefrom.Type: GrantFiled: May 26, 2006Date of Patent: April 19, 2011Assignee: Bridgestone CorpororationInventor: Yuan-Yong Yan
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Patent number: 7923515Abstract: A dip-formed article that has wearing comfort, excelling in not only tensile strength but also flexing fatigue and that itself does not tend to suffer coloration even when the article is worn and operation is continued; and a dip-forming composition capable of providing such a dip-formed article. There is provided a dip-forming composition comprising a conjugated diene rubber latex and an organic peroxide, wherein providing that X refers to the 10-hr half-life temperature (° C.) of organic peroxide and Y refers to the octanol-water partition coefficient of organic peroxide, the organic peroxide satisfies the formulae: 11?Y?2 (1), and 100?2Y?X?70?2Y (2). There is further provided a dip-formed article obtained from the composition.Type: GrantFiled: November 18, 2004Date of Patent: April 12, 2011Assignee: Zeon CorporationInventors: Kazumi Kodama, Kenji Arai, Tomomi Onitake, Hisanori Ota
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Patent number: 7923518Abstract: The present application provides novel nitrile rubbers comprising repeating units of at least one ?,?-unsaturated nitrile, at least one conjugated diene and optionally one or more further copolymerizable monomers which nitrile rubbers are distinguished by a specific calcium content as well as a specific chlorine content and dispose of specific thio end groups. Additionally, an improved polymerization and work-up process is provided to produce the aforementioned nitrile rubbers.Type: GrantFiled: February 14, 2008Date of Patent: April 12, 2011Assignee: LANXESS Deutschland GmbHInventor: Werner Obrecht
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Publication number: 20110082253Abstract: 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)3Si—R4—S—SiR33, Formula 1 (R13O)3Si—R9-N(SiR10R11R12 Formula 2 iii) a modifier compound represented by one of the following Formulas 3 to 6: (R1O)x(R2)ySi—R4—S—SiR33, Formula 3 (R13O)P(R14)qSi—R9—N(SiR10R11R12)2 Formula 4, Formule 5, Formule 6Type: ApplicationFiled: May 29, 2009Publication date: April 7, 2011Inventors: Sven Thiele, Evemarie Hamann, Joachim Kiesekamp
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Patent number: 7906575Abstract: The invention provides a molded and crosslinked rubber material for golf balls which is obtained by molding and crosslinking a rubber composition containing rubber and rubber compounding ingredients, including a base rubber, a filler and an organic peroxide, into a spherical body of one or more layers. A monomer is impregnated into the molded and crosslinked rubber material, and one or both of the following chemical reactions is induced: (i) chemical reaction of the monomer with the rubber and/or a rubber compounding ingredient, (ii) chemical reaction of the monomer itself. The depth of impregnation by the monomer from a surface of the molded and crosslinked rubber material to the interior thereof is at least 0.3 mm. The invention also provides a method for manufacturing such a molded and crosslinked rubber material for golf balls.Type: GrantFiled: July 6, 2006Date of Patent: March 15, 2011Assignee: Bridgestone Sports Co., Ltd.Inventors: Atsushi Nanba, Jun Shindo
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Publication number: 20110039970Abstract: The invention relates to a process for preparing a pressure-sensitive adhesive based on at least one polymer, in the course of which said at least one polymer is crosslinked, the polymer having functional groups Y and having been admixed, further, with at least one kind of functionalized particles which have at least one nonpolymeric base unit, wherein the particles having a surface modification of the base unit, the surface modification of the particles having at least one kind of functional groups X, and the crosslinking of the polymer being brought about at least in part by a reaction of the functional groups X of the particles and the functional groups Y of the polymer, and further to pressure-sensitive adhesives based on at least one crosslinked polymer component, the crosslinking of the polymer component being brought about at least in part by incorporation of the functionalized particles, the particles having at least one nonpolymeric base unit and also a surface modification of this base unit, and theType: ApplicationFiled: October 5, 2010Publication date: February 17, 2011Applicant: tesa SEInventors: Thilo DOLLASE, Aranzazu Escudero Vallejo, Bernd Lühmann
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Patent number: 7868099Abstract: This invention discloses a process for synthesizing a dendrimer of a rubbery polymer comprising: (a) reacting a lithium terminated rubbery polymer with a halogenated tin containing compound to produce a polymer which is terminated with halogenated tin moieties, wherein the halogenated tin containing compound is of the structural formula: wherein X represents a halogen atom, wherein Z1 groups can be the same or different and are selected from alkyl groups containing from 1 to 8 carbon atoms, wherein x represents an integer from 1 to 20, wherein the molar ratio of the lithium terminated rubbery polymer to halogen atoms in the halogenated tin containing compound is within the range of 2:n to (n?1):n, wherein n represents the number of halogen atoms that are bonded directly to tin atoms in the halogenated tin containing compound; (b) reacting the polymer which is terminated with halogenated tin moieties with a molar excess of a tertiary alcohol to produce a polymer which is terminated with hydroxy tin moietieType: GrantFiled: July 28, 2010Date of Patent: January 11, 2011Assignee: The Goodyear Tire + Rubber CompanyInventors: Adel Farhan Halasa, Wen-Liang Hsu, Chad Aaron Jasiunas
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Patent number: 7855250Abstract: A filling foam composition contains a polymer, 4,4?-oxybis(benzenesulfonylhydrazide), an amine compound (except urea compound) having a melting point of 40° C. or more, and an organic peroxide, and the amine compound is mixed in an amount of 5 parts by weight or more per 100 parts by weight of the 4,4?-oxybis(benzenesulfonylhydrazide).Type: GrantFiled: April 21, 2008Date of Patent: December 21, 2010Assignee: Nitto Denko CorporationInventors: Takehiro Ui, Takashi Koizumi
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Patent number: 7851556Abstract: A thermoplastic vulcanizate comprising a dynamically-cured rubber, where the rubber is selected from the group consisting of ethylene-propylene-non-conjugated diene rubber, propylene-based rubbery copolymers with units derived from non-conjugated diene monomers, and butyl rubber, where dynamic vulcanization is effected with a phenolic resin or a silicon-containing curative, and where the rubber is dynamically cured to an extent where greater than 94% by weight of the rubber is insoluble in cyclohexane at 23° C., and from about 25 to about 250 parts by weight of a thermoplastic polymer phase per 100 parts by weight rubber, where from about 75% to about 100% by weight of said thermoplastic polymer phase includes a butene-1-based polymer.Type: GrantFiled: January 12, 2007Date of Patent: December 14, 2010Assignee: ExxonMobil Chemical Patents Inc.Inventors: Tonson Abraham, Norman G. Barber
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Publication number: 20100305239Abstract: Thermoplastic polymer particles directly cross-linked together or cross-linked via a separate and independent polymer network to form an inter-penetrating network are disclosed herein, along with methods of manufacturing and use as interleaf tougheners of pre-pregs and composite articles.Type: ApplicationFiled: May 26, 2010Publication date: December 2, 2010Applicant: CYTEC TECHNOLOGY CORP.Inventors: Yi WEI, Alexandre A. BAIDAK, James SENGER
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Patent number: 7825195Abstract: This invention discloses a process for synthesizing a dendrimer of a rubbery polymer comprising: (a) reacting a lithium terminated rubbery polymer with a halogenated silicon containing compound to produce a polymer which is terminated with halogenated silicon moieties, wherein the halogenated silicon contain compound has at least four halogen atoms which are bonded directly to silicon atoms, wherein the ratio of the lithium terminated rubbery polymer to halogen atoms in the halogenated silicon containing compound is within the range of 2:n to (n-1):n, wherein n represents the number of halogen atoms that are bonded directly to silicon atoms in the halogenated silicon containing compound, wherein the halogenated silicon containing compound contains at least three halogen atoms which are bonded directly to a silicon atom; (b) reacting the polymer which is terminated with halogenated silicon moieties with a molar excess of a tertiary alcohol to produce a polymer which is terminated with hydroxy silyl moieties; aType: GrantFiled: November 3, 2009Date of Patent: November 2, 2010Assignee: The Goodyear Tire & Rubber CompanyInventors: Adel Farhan Halasa, Wen-Liang Hsu, Chad Aaron Jasiunas
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Publication number: 20100160568Abstract: A dip-forming latex composition comprising a conjugated diene rubber latex and an organic peroxide, wherein the residual effective activity of organic peroxide defined as the ratio of organic peroxide retaining reactivity to the whole organic peroxide contained in the latex composition is 35% or higher. The invention provides a dip-formed article, which exhibits good softness of touch and comfortable fittingness and excellent in tensile strength and resistance to flexing fatigue; which itself hardly suffers coloration especially when the article thereof is worn as a glove for continuous operation for a long time and is hard to reduce adhesiveness and following characteristics to hand while wearing it; and a dip-forming latex composition capable to give such an article by dip-forming thereof.Type: ApplicationFiled: March 1, 2010Publication date: June 24, 2010Inventors: Kazumi KODAMA, Shinji Kato
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Patent number: 7723441Abstract: Disclosed is polymer materials essentially free of silicone capable of room-temperature thermal cure and when cured having low modulus, low out-gassing rate. The material before cure typically comprises three components: (i) a cationically curable component comprising the backbone of a hydrocarbon-based rubber material essentially free of carbon-carbon double bonds and triple bonds; (ii) a hydroxyl-containing component having at least two hydroxyl groups per molecule; (iii) an initiator component having essentially no volatility at room temperature and also yield products after polymerization that have minimal or no volatility at room temperature; (iv) an optional viscosity adjustment component either homopolymerizable or capable of copolymerizing with the photo or electron beam curable material component of (i); and (v) an optional non-alkaline inert filler. Also disclosed are process for making such cured material and devices comprising such cured polymer materials.Type: GrantFiled: December 18, 2006Date of Patent: May 25, 2010Assignee: Corning IncorporatedInventor: Paul John Shustack
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Publication number: 20100113676Abstract: [Subject] A catalyst for polymerization of conjugated diene is provided, which facilitates manufacture of a conjugated diene polymer with a high 1,4-cis structure content, leaves less aluminum residue on polymerization, and has high activity. A method of manufacturing conjugated diene polymers using the catalyst is also provided. [Solution] A catalyst for polymerization of conjugated diene comprises (A) an yttrium compound; (B) an ionic compound including a non-coordinate anion and a cation; and (C) an organometallic compound including an element selected from the groups 2, 12 and 13 of the periodic table.Type: ApplicationFiled: January 11, 2010Publication date: May 6, 2010Applicant: UBE INDUSTRIES, LTD.Inventors: Michinori Suzuki, Masato Murakami, Naomi Okamoto, Mitsuharu Eikyuu, Kouji Ishiguchi
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Patent number: 7662890Abstract: A dip-forming composition of the present invention comprises a dip-forming latex containing a copolymer obtained by copolymerizing 100 parts by weight of a monomer mixture containing 70 to 85 parts by weight of a conjugated diene monomer, 10 to 28 parts by weight of an aromatic vinyl monomer, 2 to 5 parts by weight of an ethylenically unsaturated acid monomer and 0 to 18 parts by weight of other monomer copolymerizable with these monomers, said copolymer having a toluene insoluble content of 30% by weight or more and a toluene swelling degree of 70 times or less; and a vulcanizing agent, a vulcanization accelerator and zinc oxide which are blended in said latex in amounts of 0.5 to 2 parts by weight, 0.25 to 1 part by weight and 0.5 to 1 part by weight, respectively, on the basis of 100 parts by weight of a solid content of the latex.Type: GrantFiled: March 29, 2005Date of Patent: February 16, 2010Assignee: Zeon CorporationInventors: Misao Aida, Osamu Ishizu, Hisanori Ota
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Patent number: 7632894Abstract: A process for cross-linking an elastomer-containing thermoplastic polyolefin composition comprising the steps of preparing a masterbatch by mixing and/or masticating an elastomeric polyolefin with a cross-linking co-agent, and optionally an additive, in the presence of a thermoplastic polyolefin; then, cooling the masterbatch obtained in the preceding step at least up to the solidification of the thermoplastic polyolefin; and finally mixing and/or masticating the masterbatch, after the cooling step, with a cross-linking agent and optionally an additive.Type: GrantFiled: May 29, 2002Date of Patent: December 15, 2009Assignee: Basell Poliolefine Italia s.r.l.Inventors: Dino Bacci, Roberta Marchini, Carlo Mulas
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Publication number: 20090292044Abstract: To modify a diene-based rubber whereby the dispersibility of silica and the abrasion resistance or heat buildup resistance are improved. A modified diene-based rubber obtained by adding and reacting, to a diene-based rubber (A), a compound (B) having, in the molecule thereof, a nitroxide free radical stable at an ordinary temperature and in the presence of oxygen, a radical initiator (C) and a radical polymerizable monomer (D) having a functional group in the molecule thereof and a rubber composition and pneumatic tire containing the same.Type: ApplicationFiled: July 3, 2007Publication date: November 26, 2009Applicant: The Yokohama Rubber Co., Ltd.Inventors: Tetsuji Kawazura, Makoto Ashiura
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Patent number: 7622531Abstract: The present invention relates to a powder paint composition comprising at least (a) a thermosetting polymer having functional groups capable of reacting with ?-hydroxyalkylamide units (b) a compound comprising ?-hydroxyalkylamide units and (c) a deceleration agent, capable of reversibly blocking the functional groups of polymer (a). The deceleration agent is present in an amount sufficient to block at least 9% of the total amount of functional groups of polymer (a). The present invention relates also to the use of a specific amine compound as a deceleration agent in a powder paint composition.Type: GrantFiled: June 10, 2004Date of Patent: November 24, 2009Assignee: DSM IP Assets B.V.Inventors: Antonia Urmanova, Eimbert Gerrit Belder, Jurjen Bolks, Coenraad Maarten Gehrels
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Patent number: 7612147Abstract: This invention discloses a process for synthesizing a dendrimer of a rubbery polymer comprising: (a) reacting a lithium terminated rubbery polymer with a halogenated silicon containing compound to produce a polymer which is terminated with halogenated silicon moieties, wherein the halogenated silicon contain compound has at least four halogen atoms which are bonded directly to silicon atoms, wherein the ratio of the lithium terminated rubbery polymer to halogen atoms in the halogenated silicon containing compound is within the range of 2:n to (n?1):n, wherein n represents the number of halogen atoms that are bonded directly to silicon atoms in the halogenated silicon containing compound, wherein the halogenated silicon containing compound contains at least three halogen atoms which are bonded directly to a silicon atom; (b) reacting the polymer which is terminated with halogenated silicon moieties with a molar excess of a tertiary alcohol to produce a polymer which is terminated with hydroxy silyl moieties; aType: GrantFiled: July 7, 2005Date of Patent: November 3, 2009Assignee: The Goodyear Tire & Rubber CompanyInventors: Adel Farhan Halasa, Wen-Liang Hsu, Chad Aaron Jasiunas
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Patent number: 7538161Abstract: A method for producing an elastomer composition comprising allowing a cross-linked elastomer composition in the presence of (A) a fluid composed of a gaseous substance at an ordinary temperature and an ordinary pressure at a high pressure and (B) at least one component selected from a cross-linkable or polymerizable monomer, oligomer and polymer to thereby impregnate the component (B) into the cross-linked elastomer composition, then cross-linking or polymerizing the impregnated composition.Type: GrantFiled: September 17, 2004Date of Patent: May 26, 2009Assignee: The Yokohama Rubber Co., Ltd.Inventors: Tetsuji Kawazura, Hajime Satoh
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Patent number: 7498387Abstract: A first-order modified, hydrogenated polymer comprising (1) a hydrogenated polymer obtained by hydrogenating at least one unhydrogenated polymer selected from the group consisting of a polymer comprising conjugated diene monomer units and a copolymer comprising conjugated diene monomer units and vinyl aromatic hydrocarbon monomer units, and (2) a functional group-containing first-order modifier group bonded to the hydrogenated polymer (1), wherein the content of the vinyl aromatic hydrocarbon monomer units, vinyl aromatic hydrocarbon block ratio, weight average molecular weight, and hydrogenation ratio (as measured with respect to the double bonds in the conjugated diene monomer units) of the first-order modified, hydrogenated polymer are, respectively, within specific ranges.Type: GrantFiled: April 10, 2003Date of Patent: March 3, 2009Assignee: Asahi Kasei Chemicals CorporationInventors: Takaaki Matsuda, Shigeki Takayama, Toshinori Shiraki, Shigeo Nakajima, Yasuhiro Kusanose
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Publication number: 20090020731Abstract: Nonconjugated conductive polymers, which are all polymers that have a ratio of double bonds to total bonds of less than ½ are doped with iodine to produce compositions with unexpected characteristics in this invention. The mechanical and elastomeric properties of a nonconjugated polymer can be enhanced by doping the polymer with an electron acceptor such as iodine, in order to cure the polymer. Among the nonconjugated polymers are the cis-1,4-polyisoprene, cis-1,4 polybutadiene, styrene-butadiene copolymers (SBR), ethylene-propylene-diene monomer and poly (?-pinene). A heated mixture of iodine and sulfur produces a faster rate of vulcanization of rubber than using sulfur alone.Type: ApplicationFiled: October 2, 2008Publication date: January 22, 2009Inventor: Mrinal Thakur
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Publication number: 20080188580Abstract: A hydrogenated copolymer obtained by hydrogenating an unhydrogenated copolymer comprising conjugated diene monomer units and vinyl aromatic monomer units, the hydrogenated copolymer containing at least one hydrogenated copolymer block (B) which is obtained by hydrogenating an unhydrogenated random copolymer block comprised of conjugated diene monomer units and vinyl aromatic monomer units, wherein the hydrogenated copolymer has the following characteristics: the hydrogenated copolymer has a content of the vinyl aromatic monomer units of from more than 40% by weight to less than 95% by weight; at least one peak of loss tangent (tan ?) is observed at ?10 to 80° C. in a dynamic viscoelastic spectrum obtained with respect to the hydrogenated copolymer; and substantially no crystallization peak ascribed to the copolymer block (B) is observed at ?20 to 80° C. in a differential scanning calorimetry (DSC) chart obtained with respect to the hydrogenated copolymer.Type: ApplicationFiled: April 1, 2008Publication date: August 7, 2008Applicant: Asahi Kasei Chemicals CorporationInventors: Masahiro Sasagawa, Toshinori Shiraki, Shigeki Takayama, Shigeru Sasaki, Katsumi Suzuki, Takahiro Hisasue, Kazuo Moritou
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Publication number: 20080188613Abstract: A process for producing a modified polymer which increases low heat buildup and reinforcing capability of a rubber composition and which has excellent abrasion resistance, mechanical characteristics, and processability; a modified polymer obtained by the process; and a rubber composition using the modified polymer are provided. The process comprises a step of carrying out a modification reaction on the active end of a conjugated diene polymer having a vinyl content of below 10%, a cis-1,4 bond content of 75% or higher, and an active end, using an alkoxysilane compound, and a step of carrying out a condensation reaction in the presence of a condensation accelerator comprising a compound of an element belonging to at least one of the groups 4A (excluding Ti), 2B, 3B, and 5B of the periodic table.Type: ApplicationFiled: March 17, 2006Publication date: August 7, 2008Applicant: JSR CORPORATIONInventors: Ryouji Tanaka, Kouichirou Tani, Takuo Sone, Toshihiro Tadaki
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Patent number: 7375164Abstract: The present invention relates to vulcanizing agent containing metal alkanedithiols for unsaturated rubbers.Type: GrantFiled: May 2, 2005Date of Patent: May 20, 2008Assignee: LANXESS Deutschland GmbHInventors: Hermann-Josef Weidenhaupt, Hartmuth Buding, Josef Hahn, Nicole Häp, Petra Pallogh, Nesibe Ucal, Uwe Zettl
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Patent number: 7358309Abstract: A golf ball including a core and at least one layer disposed about the core, wherein the core or the layer includes a composition formed from a base polymer, a crosslink initiator, and at least one additive. The additive has at least one C—O—B linkage, the carbon in the linkage being a secondary or tertiary carbon. The additive is also selected from the group consisting of boranes, borates, boronates, borinates, heterocylic compounds having at least one boron atom as a ring member, boron-containing organosulfides, sulfur-containing silicocompounds, salts of such additives, and metal salts, organometallic salts, and non-metal salts of boron complexes.Type: GrantFiled: July 1, 2005Date of Patent: April 15, 2008Assignee: Acushnet CompanyInventors: Michael J. Sullivan, Kevin M. Harris, Peter R. Voorheis, Murali Rajagopalan, Brian Comeau, David A. Bulpett
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Patent number: 7339004Abstract: Methods are described for preparing graft copolymers from poly(vinyl chloride) or vinyl chloride copolymers comprising reacting these materials with sources of selected metal-centered free radicals in the presence of one or more monomers that can undergo free-radical addition polymerization. The metal-centered free radicals used are capable of abstracting chlorine atoms from the starting polymer to form C-centered radicals that add to the monomer(s) in order to start the growth of branches via a free-radical route. This method is an effective method for producing PVC graft copolymers, and can be used to produce PVC graft copolymers having novel compositions. The methods of the invention are particularly useful for providing highly branched PVC graft copolymers.Type: GrantFiled: August 1, 2006Date of Patent: March 4, 2008Assignee: College of William MaryInventor: William H. Starnes, Jr.
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Patent number: 7294678Abstract: Natural rubber and/or synthetic polyisoprene film products having enhanced tear strength and tensile strength crosslinked with a one polynitrile oxide, intended for direct or indirect contact with living tissue or fluids to be placed in living organisms.Type: GrantFiled: January 28, 2005Date of Patent: November 13, 2007Assignee: Regent Medical LimitedInventors: Mark W. McGlothlin, Whitney A. Williams, Scott W. Herrick
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Patent number: 7202307Abstract: A sulfur curing system EPDM composition in which one or more types of vulcanization accelerators selected from thiazole type and sulfenamide type accelerators and one or more types of vulcanization accelerators selected from dithiocarbamate type and thiuram type accelerators are combined together so as to be compounded into the EPDM composition as a vulcanization accelerator, and an automotive brake system rubber component made of the EPDM composition.Type: GrantFiled: February 21, 2006Date of Patent: April 10, 2007Assignee: Toyoda Gosei Co., Ltd.Inventors: Hidekazu Kurimoto, Kiyomitsu Terashima, Hidenori Hayashi, Yasushi Nakahara
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Patent number: 7199175Abstract: A tire tread comprising a rubber composition based on (phr: parts by weight per hundred parts of elastomer): (i) a diene elastomer; (ii) more than 50 phr of an inorganic filler as reinforcing filler; (iii) between 2 and 15 phr of an (inorganic filler/diene elastomer) coupling agent; (iv) between 1 and 10 phr of a methylene acceptor, and (v) between 0.5 and 5 phr of a methylene donor. This tread has, after mechanical running-in of the tire for which it is intended (“auto-accommodation”), a rigidity gradient which increases radially from the surface towards the inside of the tread. Use of such a tread for the manufacturing or recapping of tires. Tires comprising a tread according to the invention, in particular of the snow or ice type (“winter” tires).Type: GrantFiled: January 28, 2003Date of Patent: April 3, 2007Assignee: Michelin Recherche et Technique S.A.Inventor: Didier Vasseur
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Patent number: 7166678Abstract: A torsional vibration damper or other vibration damping device with a rubber vibration absorbing element. The rubber element is a peroxide-cured composition comprising 100 parts of ethylene-alpha-olefin elastomer, and 20 to 100 parts of substantially isobutylene or butene polymer having a viscosity average molecular weight greater than about 5000. The polymer may also be a copolymer of isobutylene and isoprene. The addition of the isobutylene polymer to the ethylene-alpha-olefin elastomer composition increases the vibration damping character of the rubber.Type: GrantFiled: March 31, 2004Date of Patent: January 23, 2007Assignee: The Gates CorporationInventors: Paul N. Dunlap, Bobbie E. South
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Patent number: 7144962Abstract: A method for the surface treatment of rubber, a process for production of a rubber article, and a rubber composition wherein a structure derived from a fluorine compound containing a fluoroalkyl at both ends of its molecule are joined to a polymer main chain of crosslinked rubber in the vicinity of the surface of a rubber base (molding). The method involves causing the fluorine compound and a silane coupling agent to exist in the vicinity of the surface of a rubber base, and heat-treating the rubber base. The production process comprises compounding and mixing raw rubber and a silane coupling agent to obtaining a molding of crosslinked rubber and heating the molding. The rubber composition contains raw rubber, a crosslinking agent, the fluorine compound and a silane coupling agent.Type: GrantFiled: August 8, 2002Date of Patent: December 5, 2006Assignee: Fujikura Rubber Ltd.Inventors: Hidetaka Takahashi, Hideo Sawada
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Patent number: 7132481Abstract: This invention relates to a composite of a melamine derivative, particularly a liquid melamine derivative, and carbon black. A representative melamine derivative is, for example, comprised of an alkoxymethylmelamine such as hexamethoxymethylmelamine. The invention further relates to a rubber composition containing such composite of a melamine derivative and carbon black and to a rubber composition containing such composite as a methylene donor in combination with a methylene acceptor and the reaction product thereof in situ within said rubber composition. Such rubber composition may be a component of an article of manufacture, which may contain or be exclusive of, wire reinforcement, such as for example a component of a tire, vehicular track or industrial belt or hose.Type: GrantFiled: April 8, 2003Date of Patent: November 7, 2006Assignee: The Goodyear Tire & Rubber CompanyInventors: Karen Elaine Burkholder, Kristine Nicole Ludwig, James Robert Tuttle
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Patent number: 7081502Abstract: The present invention relates to a shaped article containing at least one peroxide curable compound containing a butyl-like polymer(s) without any conjugated aliphatic diene in its composition, said polymer containing less than 15 wt. % of solid matter insoluble in boiling cyclohexane under reflux for 60 min. The present invention also relates to a sealing material and a medical device containing at least one peroxide-curable compound containing a butyl-like polymer containing less than 15 wt. % of solid matter insoluble in boiling cyclohexane under reflux for 60 min. Further, the present invention relates to a process for producing a butyl-like polymer having no conjugated aliphatic diene in its composition and containing less than 15 wt. % of solid matter insoluble in boiling cyclohexane under reflux for 60 min.Type: GrantFiled: October 1, 2003Date of Patent: July 25, 2006Assignee: Lanxess, Inc.Inventors: Adam Gronowski, Akhtar Osman, Stephan Glander
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Patent number: 7073277Abstract: The invention relates to the field of shoes in general, and more specifically to the application of microspheres in shoe material formulations to yield desired shoe properties. Even more specifically, the invention relates to a shoe component prepared from a closed cell foam incorporating microspheres to yield controlled cell size, cell size distribution and expansion characteristics. In another embodiment, the invention also relates to an inner sole for a shoe prepared from the reaction product of a polymer matrix component and a curing agent where the curing agent is incorporated in microspheres to yield a material conformable to the user's foot shape.Type: GrantFiled: June 25, 2004Date of Patent: July 11, 2006Assignee: Taylor Made Golf Company, Inc.Inventors: Robert Erb, Hyun Jin Kim, Marco Grott
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Patent number: 7053155Abstract: A vibration damping rubber composition capable of exhibiting an excellent vibration damping property comprising: (A) a diene rubber; (B) a bismaleimide compound represented by the following general formula (1); wherein n denotes an integer of 4 to 12; and (C) a vulcanization accelerator; wherein said rubber composition does not contain elemental sulfur as a raw material for a vulcanizing agent.Type: GrantFiled: December 8, 2004Date of Patent: May 30, 2006Assignee: Tokai Rubber Industries, Ltd.Inventors: Norihito Kimura, Fumihiko Jinno, Takehiko Taguchi
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Patent number: 7041745Abstract: A vulcanizable rubber composition is provided that comprises an elastomer, a reinforcing filler comprising silica or a mixture thereof with carbon black, a silica dispersing aid comprising about 0.1 to about 15 phr poly(vinyl acetate) (PVA), and a cure agent. The addition of PVA to the composition improves the processability of the compound, improves the tear strength and modulus of the rubber and can reduce the number of mixing stages during compounding, resulting in lowering of the cost of operation and increasing plant productivity without compromising the processability or other physical properties of the stocks. Also provided are a vulcanizate formed from vulcanizing the rubber composition, a tire component formed from the vulcanized rubber and a process for forming the tire component.Type: GrantFiled: April 17, 2002Date of Patent: May 9, 2006Assignee: Bridgestone CorporationInventors: Chen-Chy Lin, William L. Hergenrother
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Patent number: 7026410Abstract: A solventless process for making a polymeric composition having at least two pendant carboxyl groups, which comprises reacting at least one molecule of water with at least one dicarboxylic acid anhydride group of at least one suitable polymer.Type: GrantFiled: October 16, 2003Date of Patent: April 11, 2006Assignee: Henkel CorporationInventor: Tanya Estrin
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Patent number: 6992122Abstract: The present invention relates to silica-filled halogenated butyl elastomers, such as bromobutyl elastomers (BIIR) wherein the silica is surface-functionalized with a protein.Type: GrantFiled: May 9, 2003Date of Patent: January 31, 2006Assignee: Bayer Inc.Inventors: Rui Resendes, William Hopkins, John Rausa
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Patent number: 6984706Abstract: A diene rubber (A) having a weight average molecular weight (Mw) of 100,000 to 3,000,000, an Mw/number average molecular weight (Mn) ratio of 1.30 to 2.50, and an Mw/peak top molecular weight (Mp) ratio 0.70 to 1.30. A rubber composition comprising the diene rubber (A) and a diene rubber (B) having an Mw of 2,000 to 90,0000 and/or an oil extender for rubber has good processability and can give a rubber vulcanizate having high tensile strength and good abrasion resistance. The diene rubber (A) is produced by conducting a living polymerization of diene monomer in a hydrocarbon solvent; adding a polymerization stopper to a polymerization mixture at a conversion of 5 to 98% to deactivate 10 to 90% by mole of active terminals present as of the initiation of polymerization; and finally adding a polymerization stopper to completely terminate the polymerization reaction.Type: GrantFiled: March 14, 2003Date of Patent: January 10, 2006Assignee: Zeon CorporationInventors: Takeshi Karato, Masaaki Komatu, Kazuhiro Takase
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Patent number: 6974851Abstract: The present invention relates to a shaped article for high purity applications containing at least one peroxide curable compound containing a substantially gel-free butyl polymer. In another of its aspects, the present invention relates to a sealing material and a medical device containing at least one peroxide-curable compound containing a substantially gel-free butyl polymer. In still another of its aspects, the present invention relates to a fuel cell containing at least one peroxide curable compound containing a substantially gel-free butyl polymer. In still another of its aspects, the present invention relates to halogen-free and sulfur-free shaped articles.Type: GrantFiled: May 13, 2003Date of Patent: December 13, 2005Assignee: Bayer Inc.Inventors: Adam Gronowski, Susmita Bhattacharjee, Gabor Kaszas
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Patent number: 6969737Abstract: A rubber composition including a natural or synthetic rubber, and an adhesive resin capable of unexpected adhesion to metal, polymer and glass substrates, particularly cords in radical tires, hoses, conveyor belts, transmission belts, and the like by the addition of long chain esters, including mono, di- and tri-esters.Type: GrantFiled: May 9, 2003Date of Patent: November 29, 2005Assignee: The C.P. Hall CompanyInventors: Gary Wentworth, Stephen O'Rourke, Kimberly L. Stefanisin, John English
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Patent number: 6943220Abstract: This invention relates to a composition comprising (A) an ethylene-?-olefin having 3 to 20 carbon atoms-non-conjugated polyene copolymer, (B) a specific fine-powdered silicic acid and/or a silicate having a specific surface area of 5 to 500 m2/g (BET adsorption amount: ISO 5794/1, Annex D), (C) at least one kind of ?,?-unsaturated carboxylic acid metal salts, (D) an organic peroxide, further optionally (E) one antioxidant selected from sulfur-containing antioxidants, phenolic antioxidants and amine antioxidants, and/or (F) sulfur, and this invention relates to a rubber product obtainable by crosslinking the above composition.Type: GrantFiled: March 25, 2002Date of Patent: September 13, 2005Assignee: Mitsui Chemicals, Inc.Inventors: Shinya Matsunaga, Shuichi Nonaka, Hidenari Nakahama, Masaaki Kawasaki
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Patent number: 6884832Abstract: A rubber composition including a natural or synthetic rubber, and an adhesive resin capable of unexpected adhesion to metal, polymer and glass substrates, particularly cords in radical tires, hoses, conveyor belts, transmission belts, and the like by the addition of long chain esters, including mono, di- and tri-esters.Type: GrantFiled: May 10, 2002Date of Patent: April 26, 2005Assignee: The C.P. Hall CompanyInventors: Gary Wentworth, Stephen O'Rourke, Kimberly Stefanisin, John English
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Liquid adhesion promoter for cord-reinforced rubber and metal or polymer substrate/rubber composites
Patent number: 6858664Abstract: A rubber composition including a natural or synthetic rubber, and an adhesive resin capable of unexpected adhesion to metal, polymer and glass substrates, particularly cords in radical tires, hoses, conveyor belts, transmission belts, and the like by the addition of a liquid composition containing long chain esters, including mono, di- and trimesters.Type: GrantFiled: May 9, 2003Date of Patent: February 22, 2005Assignee: The C. P. Hall CompanyInventors: Gary Wentworth, Stephen O'Rourke, Kimberly L. Stefanisin, John English, Zhi Chen, Stephen J. Semlow -
Patent number: 6852786Abstract: A rubber compound is described containing as a reinforcing filler a layered silicate which is obtained by excessive leaching of a smectitic layered silicate with mineral acids. The rubber compound further contains at least one diene polymer or copolymer and a coupler containing groups reactive with the filler. There is also described a method for production of the rubber compound and molded articles produced from the rubber compound.Type: GrantFiled: March 8, 2001Date of Patent: February 8, 2005Assignee: Sud-Chemie AGInventors: Rainer Brandsch, Stefan Dick, Klaus Schurz, Nikolaus Rennar, Andreas Siedler
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Publication number: 20040258936Abstract: A solid type pressure-sensitive adhesive composition capable of being applied without the necessity of using an organic solvent or water and a pressure-sensitive adhesive sheet, which are excellent in both adhesive force and holding power and, in particular, undergo no decrease in low-temperature adhesive force even when the adhesive layer thickness is small. The crosslinked solid type pressure-sensitive adhesive composition comprising (a) a rubbery polymer, (b) a tackifier, and (c) a crosslinking agent comprising at least one member selected from the group consisting of thiuram vulcanizing agents, quinoid vulcanizing agents, quinone dioxime vulcanizing agents, and maleimide vulcanizing agents.Type: ApplicationFiled: June 17, 2003Publication date: December 23, 2004Applicant: NITTO DENKO CORPORATIONInventors: Tomoo Yamaguchi, Yasunobu Ina, Isao Hirose, Shuzo Fujiwara, Yoshihiro Kitamura