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| Number | Title | Issue Date |
| 7943712 | Catalyst system for synthesizing amine functionalized rubbery polymers having a high trans microstructure The present invention is directed to a catalyst system for synthesizing rubbery polymers, such as polybutadiene rubber, styrene-butadiene rubber, isoprene-butadiene rubber, or styrene-isoprene-butadiene rubber, that are amine functionalized and have a high trans mic... | 05/17/2011 |
| 7825203 | Catalyst system for synthesizing amine functionalized rubbery polymers The present invention is directed to a catalyst system for synthesizing rubbery polymers, such as polybutadiene rubber, styrene-butadiene rubber, isoprene-butadiene rubber, or styrene-isoprene-butadiene rubber, that are amine functionalized and have a high trans or ... | 11/02/2010 |
| 7405262 | Preparation of functionalized anionic polymerization initiators A process for preparing a functionalized polymerization initiator, the process comprising combining a functionalized styryl compound and an organolithium compound. ... | 07/29/2008 |
| 7351768 | Liquid polymer 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 o... | 04/01/2008 |
| 7348388 | Copolymers of olefins and vinyl- and allylsilanes Ethylene and allyl- or vinylsilanes are efficiently copolymerized by certain late transition metal complexes containing selected bidentate or tridentate ligands. The resulting novel polymers may be crosslinked by moisture when vinylsilane contains groups bound to si... | 03/25/2008 |
| 7342070 | Conjugated diolefin (co)polymer rubber, process for producing (co)polymer rubber, rubber composition, composite, and tire 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) po... | 03/11/2008 |
| 7321017 | Amine containing catalyst system and methods of use thereof The present invention is directed to an amine containing catalyst system for synthesizing rubbery polymers, such as polybutadiene rubber and styrene-butadiene rubber, having a high trans microstructure. The catalyst system, in one embodiment, includes (a) an organol... | 01/22/2008 |
| 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 |
| 7300993 | Process for the preparation of polyether polyols The invention relates to a process for the preparation of polyether polyols, which process involves: (a) contacting a phosphorus containing compound having at least one hydroxyl group with alkylene oxide to obtain alkoxylated initi... | 11/27/2007 |
| 7291687 | Catalyst system for synthesizing rubbery polymers having a high trans microstructure content The present invention is directed to a catalyst system for synthesizing rubbery polymers, such as polybutadiene rubber and styrene-butadiene rubber, having a high trans microstructure. The catalyst system, in one embodiment, includes (a) a barium salt of an alcohol ... | 11/06/2007 |
| 7271218 | Liquid polymer 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 o... | 09/18/2007 |
| 7247681 | Preparation method of copolymer 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 monomer and a vinyl aromatic monomer in the presence of an organolithium catalyst... | 07/24/2007 |
| 7153920 | Synthesis of functionalized high vinyl rubber This invention is based upon the discovery that rubbery polymers having a high vinyl content and a low degree of branching can be synthesized with an initiator system that is comprised of (a) a lithium initiator selected from the group consisting of allylic lithium ... | 12/26/2006 |
| 7153919 | 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... | 12/26/2006 |
| 7087549 | Calcium-based catalyst system This invention reveals a catalyst system for use in isothermal polymerizations which consists essentially of (a) an organolithium compound, (b) a calcium alkoxide and (c) a lithium alkoxide. The subject invention further discloses a process for synthesizing a random... | 08/08/2006 |
| 7074869 | Synthesis of functionalized high vinyl rubber This invention is based upon the discovery that rubbery polymers having a high vinyl content and a low degree of branching can be synthesized with an initiator system that is comprised of (a) a lithium initiator selected from the group consisting of allylic lithium ... | 07/11/2006 |
| 7048023 | Pneumatic tire having a component containing high trans styrene-butadiene rubber The invention is directed to a pneumatic tire having at least one component comprising a vulcanizable rubber composition, wherein the vulcanizable rubber composition comprises, based on 100 parts by weight of elastomer (phr), from about 30 to 100 phr of high trans r... | 05/23/2006 |
| 7041760 | Process for production of butyl rubber The present invention relates to a process for producing polymers containing repeating units derived from at least one isoolefin monomer, optionally repeating units derived from at least one multiolefin monomer and optionally further copolymerizable monomers in the ... | 05/09/2006 |
| 7026418 | Emulsion polymerization process utilizing ethylenically unsaturated amine salts of sulfonic, phosphoric and carboxylic acids Disclosed is an improved method of making polymers. The method utilizes at least one ethylenically unsaturated monomer and at least one polymerizable surface active agent. The polymerizable surface active agent is capable of co-polymerization with traditional monome... | 04/11/2006 |
| 6943250 | Protected aminofunctionalized polymerization initiators and methods of making and using same Anionic polymerization initiators useful in the preparation of polymers having a protected amine functional group. The amine functionality is part of a heterocyclic radical and includes a protecting group. ... | 09/13/2005 |
| 6901982 | Functionalized monomers for synthesis of rubbery polymers The present invention relates to a process for synthesizing a rubbery polymer that comprises copolymerizing at least one conjugated diolefin monomer and at least one functionalized monomer in an organic solvent at a temperature which is within the range of 0° C. to... | 06/07/2005 |
| 6891019 | Protected aminofunctionalized polymerization initiators and methods of making and using same Anionic polymerization initiators useful in the preparation of polymers having a protected amine functional group. The amine functionality includes a first protecting group, which can be aralkyl, methyl, allyl or tertiary alkyl group. The other of the amine protecti... | 05/10/2005 |
| 6818710 | Process for producing modified polymer rubber There is provided a process for producing a modified polymer rubber, which comprises the steps of: (1) reacting one part by mol of an organoalkali metal compound with n±0.7 (n is an integer of 3 or more) parts by mol of a specific... | 11/16/2004 |
| 6800582 | Process of preparation of amino functionalized diene polymers, polymers of such type, rubber composition and tire casing containing those polymers The present invention provides a process for preparing amino functionalized diene polymers with 1,4-trans linkage content equal to or greater than 70%. The invention also concerns polymers of such type, a rubber composition and a tire casing containing those polymer... | 10/05/2004 |
| 6765065 | Process for producing modified polymer rubber There is provided a process for producing a modified polymer rubber having modified both ends, which comprises the steps of: (1) reacting a compound represented by the following formula (1) with an organic alkali metal compound to produce a chemical species, ... | 07/20/2004 |
| 6762259 | Process for the production of living (co)polymers and use of the (co)polymers The purpose of the present invention is to provide polymerization catalyst which can produce quite efficiently (co)polymer having number average molecular weight and number of molecules which are accurately controlled in producing method of (co)polymer by the polyme... | 07/13/2004 |
| 6758251 | Pneumatic tire having a component containing high trans styrene-butadiene rubber The invention is directed to a pneumatic tire having at least one component comprising a vulcanizable rubber composition, wherein the vulcanizable rubber composition comprises, based on 100 parts by weight of elastomer (phr), from about 30 to 100 phr of high trans r... | 07/06/2004 |
| 6703446 | Hetero-telechelic polymers and processes for making same Hetero-telechelic polymers having the formula: wherein FG is a protected or non-protected functional group; Q is a saturated or unsaturated hydrocarbyl group derived by incorporation of a compound selected from the group consisting of conjugated diene hyd... | 03/09/2004 |
| 6699939 | Hetero-telechelic polymers and processes for making same Hetero-telechelic polymers having the formula: wherein FG is a protected or non-protected functional group; Q is a saturated or unsaturated hydrocarbyl group derived by incorporation of a compound selected from the group consisting of conjugated diene hyd... | 03/02/2004 |
| 6686423 | Method for carrying out the anionic polymerization of vinylaromatic monomers In a process for the anionic polymerization of vinylaromatic monomers or dienes in the presence of a lithium organyl or lithium alcoholate and a magnesium and/or an aluminum compound, a sterically hindered phenol or amine is added.... | 02/03/2004 |
| 6660819 | Method for producing synthetic polymerizates with a very low residual monomer content, products produced according to this method and the use thereof The invention relates to a process for producing water-soluble or water-swellable polymer products with low levels of residual monomers using acrylic acid and/or acrylic acid derivatives, which process is characterized by adding a nitrogen compound to the... | 12/09/2003 |
| 6627715 | Group IIa metal containing catalyst system The group IIa metal containing catalyst system of this invention can be utilized to synthesize rubbery polymers having a high trans microstructure by solution polymerization. Such rubbery polymers having a high trans microstructure content, such as polybu... | 09/30/2003 |
| 6624267 | Process of preparation of amino functionalized diene polymers, polymers of such type, rubber composition and tire casing containing those polymers The present invention provides a process for preparing amino functionalized diene polymers with 1,4-trans linkage content equal to or greater than 70%. The invention also concerns polymers of such type, a rubber composition and a tire casing containing th... | 09/23/2003 |
| 6566478 | Synthesis of high vinyl rubber This invention is based upon the discovery that rubbery polymers having a high vinyl content and a low degree of branching can be synthesized with an initiator system that is comprised of (a) a lithium initiator selected from the group consisting of allyl... | 05/20/2003 |
| 6552141 | Method for producing synthetic polymerizates with very low residual monomer content The invention relates to a method for producing water-soluble or water-swellable polymerizates with a low residual monomer content from acrylic acid and/or acrylic acid derivatives. The method is characterized by the addition of a nitrogen compound to the... | 04/22/2003 |
| 6521733 | Tapered aromatic-vinyl/conjugated-diene copolymer rubber, process for producing the same and rubber composition A tapered aromatic vinyl-conjugated diene copolymer rubber having a ratio W0.6Mp /WMp in the range of 0.65-0.9 or 1.1-1.3 wherein Mp is molecular weight of a copolymer molecule corresponding to the peak of a molecular weight distribu... | 02/18/2003 |
| 6515087 | Synthesis of elastomers having low hysteresis It is important for rubbery polymers that are used in tires, hoses, power transmission belts and other industrial products to have good compatibility with fillers, such as carbon black, silica, clay (including organoclays), and mixtures thereof. To attain... | 02/04/2003 |
| 6429273 | Process for the preparation of vinylic polymers, polymerization initiator for vinylic monomers, and styrene resin composition A process for producing a vinyl polymer which comprises carrying out anionic polymerization under the condition that the polymerization temperature is not lower than 45° C. and not higher than 250° C. and the concentration of the vinyl monomer based on ... | 08/06/2002 |
| 6271324 | Method for preparing polyacryl(meth)acrylates Homopolymers, copolymers or block copolymers are prepared by anionic polymerization of acrylates and/or methacrylates in the presence of an initiator composition containing A) an organic alkali metal compound, B) an organic aluminum compound and C) an additive... | 08/07/2001 |
| 6221991 | Methacrylate and acrylate polymers and processes for making same Polar polymers having the following formula: FG-(Q)d -Rn -Z-J-[A(R1 R2 R3)]x (I) wherein FG is H or a protected or non-protected functional group; Q is a polar hydrocarbyl group derived by incorpor... | 04/24/2001 |
