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| Number | Title | Issue Date |
| 8044147 | Nitrile group-containing copolymer rubber and a vulcanizable nitrile group-containing copolymer rubber composition A nitrile group-containing copolymer rubber comprising 10 to 40 wt % of α,β-ethylenically unsaturated nitrile unit (a), 10 to 60 wt % of α,β-ethylenically unsaturated carboxylic acid ester unit (b), and 20 to 70 wt % in total of conjugated diene unit (c) and sat... | 10/25/2011 |
| 7923514 | Method of hydrogenating conjugated diene polymer, hydrogenation catalyst system, and composition of basic, conjugated diene polymer A process for hydrogenating a conjugated diene polymer wherein a conjugated diene polymer is hydrogenated in the presence of a catalyst comprising a platinum group metal or its compound, and a basic compound. More specifically, (1) hydrogenation is conducted in a re... | 04/12/2011 |
| 7662889 | Process for the metathetic degradation of nitrile rubbers An improved process for the metathetic degradation of nitrile rubber using catalyst systems comprising the catalyst and also a phosphane or diphosphane is provided. ... | 02/16/2010 |
| 7553910 | Preparation of derivatized dithiols The invention relates to a process for preparing dithiols derivatized with dithiocarbamic acids, in which the derivatized dithiols are obtained in high yield and purity. ... | 06/30/2009 |
| 7470750 | Method for the degradation of nitrile rubber by metathesis in the presence of ruthenium- or osmium-based catalysts A novel process for the degradation of nitrile rubber by metathesis using ruthenium- or osmium-based catalysts which have both a substituted or unsubstituted imidazolidine ligand and a carbene ligand bearing a phosphonium radical is provided. ... | 12/30/2008 |
| 7385008 | Abrasion resistant elastomeric compositions The present invention includes elastomeric compositions of BIMS elastomers suitable for abrasion resistant, high traction and/or air barrier articles. The compositions and articles made from those compositions of the invention can be described in any number of embod... | 06/10/2008 |
| 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 |
| 7381781 | Process for the preparation of low molecular weight hydrogenated nitrile rubber The present invention relates to a process for the production of hydrogenated nitrile rubber polymers having lower molecular weights and narrower molecular weight distributions than those known in the art in the absence of a co-(olefin). ... | 06/03/2008 |
| 7354977 | Process for hydroxyalkylating carboxylic acid-functionalized materials The present invention relates to a process for hydroxyalkylating terminal carboxylic acid groups. More specifically, this invention provides a process for preparing hydroxyl-functionalized materials, such as butadiene nitrile polymers, from carboxylic acid-functiona... | 04/08/2008 |
| 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 |
| 7319124 | Vulcanizing agents based on organic sulphur-nitrogen compounds for unsaturated rubbers and mixtures of these The invention relates to novel organic sulphur-nitrogen compounds, their preparation, and use as vulcanizing agents for unsaturated rubbers and mixtures of these. ... | 01/15/2008 |
| 7300981 | Abrasion resistant elastomeric compositions The present invention includes elastomeric compositions of BIMS elastomers suitable for abrasion resistant, high traction and/or barrier articles. The compositions and articles made from those compositions of the inventions can be described in any number of embodime... | 11/27/2007 |
| 7265185 | Process for hydrogenating carboxylated nitrile rubber, the hydrogenated rubber and its uses Polymers of a conjugated diene, an unsaturated nitrile and an α,β-unsaturated carboxylic acid are selectively hydrogenated to reduce carbon-carbon double bonds, without also reducing carboxyl groups and nitrile groups, using a rhodium-containing compound as cataly... | 09/04/2007 |
| 7262244 | Polymer composites comprising low molecular weight nitrile rubber The present invention relates to polymer composites comprising at least one, optionally hydrogenated, nitrile rubber polymer having a Mooney viscosity (ML 1+4 @ 100° C.) below 30 at least one filler and optionally at least one cross-linking agent, a process for pre... | 08/28/2007 |
| 7259199 | Tire with rubber containing in-situ resin There is disclosed a pneumatic tire having a component containing a rubber composition comprising (A) a sulfur-vulcanized rubber compound; and (B) the reaction product of (1) a methylen... | 08/21/2007 |
| 7244784 | Aqueous nanoparticle dispersions New aqueous PNP dispersions are disclosed. A method of preparing an aqueous PNP dispersion from solvent-based PNPs having a diameter in the range of from 1 to 50 nanometers is disclosed. An associative thickener composition based on PNPs having an average of at leas... | 07/17/2007 |
| 7241843 | Rubber composition for tread A rubber composition for a tread optimizing a vulcanization speed in a vulcanization step and, further, improving heat aging resistance is provided. A rubber composition for a tread comprising 20 to 90 parts by weight of silica, 0.5 to 2 parts by weigh... | 07/10/2007 |
| 7235601 | Hydrogenated nitrile rubber compositions with improved processability The present invention relates to polymer composites containing at least one, optionally hydrogenated, nitrile rubber polymer having a Mooney viscosity (ML 1+4 @ 100° C.) in the range of from 50–30 at least one filler and optionally at least one cross-linking agen... | 06/26/2007 |
| 7199169 | Thiol compound derivative, hardening compositions containing these derivatives and molded articles thereof The present invention relates to a thiol compound derivative represented by the following formula (1), a curable composition containing the derivative, and a molded product made of the composition. More particularly, the invention relates to a thiol compound derivat... | 04/03/2007 |
| 7186845 | Polymer-filler coupling additives Dispersion of filler(s) in polymeric compositions are improved by the use of a polymer-filler coupling compound, Q—A—B, wherein Q comprises a dipolar nitrogen-containing moiety that can form a 1,3 dipolar addition to an unsaturated carbon-carbon bond; B is an ox... | 03/06/2007 |
| 7186780 | Polymer and liquid gasket for in-place forming A liquid sealing agent used for automobile parts, electric parts, various kinds of machine parts and the like has encountered a problem that it is difficult to combine good oil resistance, heat resistance, adhesiveness and flexibility. The present invention provides... | 03/06/2007 |
| 7176260 | Soft nitrile medical gloves having improved glove relaxation properties The invention is the manipulation of the zinc oxide content and sulfur content of nitrile butadiene rubbers and selected vulcanization conditions that can be achieved economically with common production facilities. The manipulation of these components affects the re... | 02/13/2007 |
| 7166645 | Process for the alkaline saponification of crosslinked acrylonitrile bead polymers The alkaline saponification of acrylonitrile bead polymers provides weakly acidic cation exchangers with little intrinsic color and with reduced residual nitrogen content if the saponification is begun at a temperature T1 of from 70 to 120° C. and, once a de... | 01/23/2007 |
| 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 |
| 7132481 | Composite of melamine derivative and carbon black, rubber composition and article having a component thereof 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 f... | 11/07/2006 |
| 7119151 | Antimicrobial agent and production process thereof An antimicrobial agent utilizes a resin having acrylonitrile and styrene and/or a conjugated diene as units. The antimicrobial agent includes a metal-salt-containing copolymer, and the metal-salt-containing copolymer is obtained by treating a copolymer containing ac... | 10/10/2006 |
| 7091284 | Hydrogenated nitrile rubbers with improved low-temperature properties Hydrogenated copolymers of an unsaturated nitrile, butadiene and isoprene, wherein the molar ratio of butadiene to isoprene is less than 3:1, display valuable low temperature properties. ... | 08/15/2006 |
| 7084212 | Vulcanization accelerators The present invention relates to vulcanization accelerators constituted by compounds, derived from secondary amines, belonging to the class of enamines and to a process for their preparation. ... | 08/01/2006 |
| 7066319 | Hyperpolarized gas transport and storage devices and associated transport and storage methods using permanent magnets A transport unit includes a plurality of permanent magnets arranged to provide a magnetic holding field for protecting hyperpolarized gas during storage and/or transport. The permanent magnets are configured in a relatively light weight manner to project a substanti... | 06/27/2006 |
| 7063181 | Fluid-borne noise suppression in an automotive power steering system A method of dampening fluid-borne noise in an automotive power steering system in accordance with a presently preferred embodiment of the invention contemplates provision of a power steering fluid hose having a laminated inner tube surrounded by a reinforcing outer ... | 06/20/2006 |
| 7053137 | Azodicarbonamide treatment for carbon black and rubber compounds A process for producing cured rubber is disclosed wherein the process comprises: A) mixing rubber, carbon black, and azodicarbonamide without other curative ingredients; B) adding the remaining curative ingredients... | 05/30/2006 |
| 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 |
| 7037981 | High molecular weight flocculant A high-molecular flocculant rendered water-soluble by conversion of cyano groups contained in a high-molecular material, a method for producing the flocculant, and a method for efficiently processing water using the flocculant. A high-molecular material containing a... | 05/02/2006 |
| 7037985 | Urethane sporting equipment composition incorporating nitroso compound Sports equipment incorporate thermoplastic compositions including urethane and a nitroso reaction product of a nitroso compound and a diisocyanate or polyisocyanate. The invention allows for the processing advantages of a thermoplastic urethane with the superior per... | 05/02/2006 |
| 7037982 | Rubber mixtures for roll coverings This invention relates to a rubber mixture containing a carboxylated nitrile rubber, a metal salt of an acrylate, a liquid acrylate, a silane, optionally together with further additives, to a process for the production thereof and to use for moldings of all kinds, i... | 05/02/2006 |
| 7030193 | Nitrite compositions The present invention relates to a polymer composite containing at least one carboxylated nitrile rubber polymer, that is optionally hydrogenated, at least one basic compound, at least one polyhalogenated hydrocarbon, optionally at least one filler and optionally at... | 04/18/2006 |
| 7015284 | Thermoplastic elastomer composition The present invention relates to a soft thermoplastic elastomer composition that is free of thermoplastic resin that can be utilized in manufacturing shoe sole inserts, seals, gaskets, wheels, and that can be overmolded on a hard substrate, such as a metal or a ther... | 03/21/2006 |
| 7005467 | Ethylene propylene copolymer composition and process for producing vulcanizates therefor A polymer composition useful to produce a vulcanizate having improved hot air aging properties is described. The polymer composition includes two components. The first component is a polymer having a main polymer chain derived from: (i) at least about 30% by weight ... | 02/28/2006 |
| 6960636 | Thermosetting resin compositions containing maleimide and/or vinyl compounds In accordance with the present invention, there are provided novel thermosetting resin compositions which do not require solvent to provide a system having suitable viscosity for convenient handling. Invention compositions have the benefit of undergoing rapid cure. ... | 11/01/2005 |
| 6951905 | Bisoxazolone based polymers A method of preparing an elastomeric polymer comprising the step of reacting a bisoxazolone with a primary or secondary di-amine terminated oligomer. Also disclosed is a polymer having the formula comprising the repeat unit (I), where R1, R2, R... | 10/04/2005 |
