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| Number | Title | Issue Date |
| 8017695 | Method for producing functionalized cis-1,4-polydienes having high cis-1,4-linkage content and high functionality This invention relates to a method for producing functionalized cis-1,4-polydienes having a combination of a high cis-1,4-linkage content and a high functionality, the resulting polymers and the vulcanized products containing the polymers. The functionalized cis-1,4... | 09/13/2011 |
| 7442746 | Epoxidation of unsaturated cationically stabilized polymer latex The present invention is directed to a process for synthesizing an epoxidized polymer that includes the steps of: (1) preparing a cationically stabilized polymer latex containing at least one conjugated diolefin monomer in a first ... | 10/28/2008 |
| 7423097 | Glycidyloxy groups-containing polybutadiene, mono-oxetane compound and cationic photoinitiator A radiation curable resin composition comprises a glycidyloxy groups-containing polybutadiene or hydrogenated polybutadiene, a mono-oxetane compound or monofunctional epoxy compound, and a cationic photopolymerization initiator. ... | 09/09/2008 |
| 7396871 | Rubber modified acrylic and/or vinyl hybrid resins This invention relates to a rubber modified acrylic and/or vinyl resin comprising the mini-emulsion polymerization product of at least one rubber compound substantially dissolved in at least one acrylic monomer and/or vinyl monomer. ... | 07/08/2008 |
| 7385010 | Hydrogenation of diene-based polymer latex The present invention relates to a process for the hydrogenation of the carbon-carbon double bonds in diene based polymer latex. ... | 06/10/2008 |
| 7345115 | Organic solvent-free hydrogenation of diene-based polymers A process is provided for the hydrogenation of carbon-carbon double bonds in polymers by treatment of the polymers with hydrogen in the presence of rhodium-based catalysts and in the complete absence of organic solvent. ... | 03/18/2008 |
| 7319123 | Use of sulfur containing initiators for anionic polymerization of monomers 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 f... | 01/15/2008 |
| 7294678 | Thin walled polynitrile oxide crosslinked rubber film products and methods of manufacture thereof 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. ... | 11/13/2007 |
| 7279533 | Polar-group-containing cyclized rubber and process for producing same A main object of the invention is to provide a polar-group-containing cyclized rubber making it possible to improve remarkable the adhesiveness between paint and a molded product made of a nonpolar polymer such as polypropylene or polyethylene, and a process for pro... | 10/09/2007 |
| 7262254 | Tire with low volatile alcohol emission rubber tread with compositional limitations The invention relates to a tire having a tread of a rubber composition with compositional limitations containing minimal, if any, of in situ formed volatile alcohol byproduct. The tread component rubber composition contains a combination or pre-hydrophobated silica ... | 08/28/2007 |
| 7241841 | Hydrogenated copolymers of unsubstituted and substituted conjugated dienes The random, hydrogenated copolymers according to the present invention of unsubstituted conjugated dienes and substituted conjugated dienes, having a glass transition temperature of ≦−60° C., an enthalpy of fusion of ≦100 J/g and a content of residual double ... | 07/10/2007 |
| RE39617 | Butadiene polymers having terminal functional groups Hydrogenated butadiene polymers having terminal functional groups have minimum viscosity at any molecular weight when the 1,2-addition is between 30% and 70% Hydrogenated butadiene polymers having about two terminal hydroxyl groups per molecule have surprisingly low... | 05/08/2007 |
| 7211612 | Tread rubber composition and pneumatic tire employing the same A tread rubber composition improved both in grip performance on ice-covered and snow-covered road surfaces and in abrasion resistance is provided. The tread rubber composition contains aluminum hydroxide having an untamped density of not more than 0.60 g/cm3 | 05/01/2007 |
| 7208549 | Cure system for polyisoprene rubber The present invention is based upon the unexpected finding that polyisoprene rubber which is clear and of high purity can be cured utilizing the curative system of this invention to attain an elongation at break of greater than 1200% without compromising the clarity... | 04/24/2007 |
| 7202306 | Method for producing modified conjugated diene polymer and rubber composition Disclosed are a method for producing a modified conjugated diene polymer improved in quality stability, more enhanced in low heat buildup and reinforcing ability when used in a rubber composition, excellent in wear resistance, mechanical characteristics and processa... | 04/10/2007 |
| RE39559 | Butadiene polymers having terminal functional groups Hydrogenated butadiene polymers having terminal functional groups have minimum viscosity at any molecular weight when the 1,2-addition is between 30% and 70%. Hydrogenated butadiene polymers having about two terminal hydroxyl groups per molecule have surprisingly lo... | 04/10/2007 |
| 7196226 | Fluoraminoolefins and fluorination reagents which can be prepared therefrom The present invention relates to fluorination reagents comprising 1-fluoro-1-aminoolefins and also processes for preparing fluorination reagents comprising 1-fluoro-1-aminoolefins. ... | 03/27/2007 |
| 7151140 | Preparation method of diene copolymer having improved rolling resistance and wet traction The present invention provides a method for preparing a copolymer useful for the manufacture of tires by coupling the ends of a living polymer, obtained from copolymerization of a diene monomers in the presence of an organolithium initiator and a hydrocarbon solvent... | 12/19/2006 |
| 7148292 | Method for hydrogenation of polymers in dispersed medium The invention concerns a method for hydrogenation of unsaturated polymers in dispersed medium based on an oxidation-reduction system containing hydrazine, an oxidant such as a peroxide and optionally a carboxylic acid. The hydrogenation rate can reach 100% in certai... | 12/12/2006 |
| 7144962 | Method for surface treatment of rubber process for production of rubber articles, rubber compositions, rubber molding, and process for production thereof 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 cros... | 12/05/2006 |
| 7125934 | Functionalization of living rubbery polymers with nitrones This invention discloses a low cost process that can be used to functionalize living rubbery polymers with terminal nitroxide end-groups to promote interaction between the polymer end-groups and surface functionalities commonly found on carbon black and silica fille... | 10/24/2006 |
| 7087680 | Highly crystalline polypropylene with low xylene solubles The invention is directed to a polypropylene resin which has a Mw/Mn of less than 5, a melt flow rate of less than 7 g/10 min., a 1% secant flexural modulus of greater than 300,000 psi and less than 2 wt. % xylene solubles. ... | 08/08/2006 |
| 7060757 | Rubber composition and pneumatic tire using the same A rubber composition comprises (1) a rubber component including at least one of polybutadiene rubber and a styrene-butadiene copolymer rubber having a content of vinyl bond of not less than 30%, (2) at least one specified compound as a vulcanization accelerator, and... | 06/13/2006 |
| 7045578 | Oil extended rubber and rubber composition An oil-extended rubber comprising a conjugated diene rubber having a specific amount of isoprene units, and an extender oil incorporated therein, characterized in that the rubber is obtained by polymerizing a monomer mixture comprising 1,3-butadiene and an aromatic ... | 05/16/2006 |
| 7041746 | Accelerator system for synthetic polyisoprene latex The invention pertains to an accelerator system, such as an accelerator system for synthetic polyisoprene latex. The accelerator system comprises dithiocarbamate and thiourea and can produce synthetic polyisoprene films having a tensile strength of about 3,000 psi t... | 05/09/2006 |
| 7026410 | Solventless method for preparation of carboxylic polymers 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. ... | 04/11/2006 |
| 7019084 | Tire with rubber composition The present invention relates to the preparation of rubber compositions for tire tread and tire sidewall component applications. A tire is provided having tread of such composition designed for relatively heavy loads such as, for example, truck tires. A tire having ... | 03/28/2006 |
| 7001946 | Tire with tread of natural rubber-rich rubber composition This invention relates to tires having a tread of a natural rubber-rich rubber composition reinforced with a combination of rubber reinforcing carbon black and precipitated silica in which carbon black is in the majority of such reinforcement. In one aspect, the tre... | 02/21/2006 |
| 6987145 | Hetero-branched radial polystyrene-polyisoprene block copolymer composition and preparation method thereof Disclosed is a hetero-branched radial block copolymer suitable as a base polymer of pressure-sensitive adhesives, the hetero-branched radial block having a hetero-branched structure comprised of polystyrene, polyisoprene, and polybutadiene blocks and being represent... | 01/17/2006 |
| 6969737 | Adhesion promoter for cord-reinforced rubber and metal or polymer substrate/rubber composites 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... | 11/29/2005 |
| 6951906 | Process for hydrogenating a conjugated diene polymer This invention relates to a process for selectively hydrogenating the unsaturated double bonds of conjugated diene units of a homopolymer or copolymer. By using a highly active novel homogeneous organo titanium catalyst represented by formula (I) and lithium hydride... | 10/04/2005 |
| 6916388 | Hydrazinium nitroformate based high performance solid propellants The present invention is directed to a solid propellant for rocket motors, gas generators and comparable devices, comprising a cured composition of hydrazinium nitroformate and an unsaturated hydroxyl terminated hydrocarbon compound. ... | 07/12/2005 |
| 6894122 | Tire with component of rubber composition comprised of a combination of functionalized emulsion SBR and coupled solution SBR This invention relates to a tire having at least one component (e.g. tread) of a rubber composition comprised of a carbon black and precipitated silica reinforced elastomer blend comprised of a combination of hydroxyl functionalized aqueous emulsion polymerization p... | 05/17/2005 |
| 6894103 | Electropolymerization modified carbon black and articles including tires having at least one component containing such modified carbon black This invention relates to a carbon black modified by a two step process in which carbon black is initially treated with functional monomers by an electropolymerization process to form a functionalized carbon black having an initial polymer attached to, of grafted to... | 05/17/2005 |
| 6884832 | Adhesion promoter for cord-reinforced rubber and metal or polymer substrate/rubber composites 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... | 04/26/2005 |
| 6881797 | Process for hydrogenation of conjugated diene polymer A process for hydrogenation of a conjugated diene polymer. The conjugated diene polymer in an inert organic solvent is brought into contact with hydrogen in the presence of a hydrogenation catalyst composition to selectively hydrogenate the unsaturated double bonds ... | 04/19/2005 |
| 6867265 | Process for improved coupling of rubbery polymers Rubbery polymers made by anionic polymerization can be coupled with tin halides or silicon halides to improve the characteristics of the rubber for use in some applications, such as tire treads. In cases where the rubbery polymer was synthesized utilizing a polar mo... | 03/15/2005 |
| 6864326 | Process for polymer hydrogenation using lithium hydride prepared from reactor equipped with high-speed injection nozzle The present invention relates to a process for polymer hydrogenation that includes: polymerizing or copolymerizing at least one conjugated diene in a hydrocarbon solvent using an organic alkali metal polymerization initiator to generate a living polymer; adding a te... | 03/08/2005 |
| 6858679 | Compositions providing improved functionalization of terminal anions and processes for improved functionalization of terminal anions Compositions including one or more anionic polymerization initiators and one or more additives for improving functionalizing efficiency of living polymer anions are disclosed. The present invention also provides compositions including one or more electrophiles and o... | 02/22/2005 |
| 6852786 | Rubber mixture that can be cross-linked by sulfur, method for the production thereof, and cross-linked rubber mixtures and shaped bodies that can be obtained therefrom 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 couple... | 02/08/2005 |
