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| Number | Title | Issue Date |
| 8119749 | Method of taking (meth)acrylic ester polymer out of liquid reaction mixture The present invention relates to a method of obtaining a (meth)acrylate-based polymer from a reaction solution containing the (meth)acrylate-based polymer, the method including (a) adding an acid to the reaction solution containing the (meth)acrylate-based polymer w... | 02/21/2012 |
| 7973117 | Process for continuously producing (meth)acrylic ester polymer or copolymer A continuous production process, for producing an (meth)acrylic ester (co)polymer comprises the step of continuously feeding an organoaluminum compound-containing polymerization initiator solution and an (meth)acrylic ester into a reactor to continuously obtain a li... | 07/05/2011 |
| 7396887 | Insitu removal of chelator from anionic polymerization reactions A process for producing polymers having at least one high vinyl end segment is provided. The process comprises: (a) forming a living prepolymer high vinyl initiator with a vinyl content greater than about 45% using a vinyl modifier, (b) adding a R1R2... | 07/08/2008 |
| 7351777 | Retarded anionic polymerization of vinyl aromatic monomers using insoluble or heterogeneous retardants This invention is a process to manufacture high quality vinyl aromatic polymer that is essentially free of unreacted vinyl aromatic monomer using retarded anionic polymerization wherein the retardant is insoluble and can be removed from the polymerization at an inte... | 04/01/2008 |
| 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 |
| 7302991 | Fugitive pattern for casting A fugitive pattern for making a shell mold for investment casting a metal or alloy comprises a substantially random interpolymer and a low molecular weight polymer in proportions to provide a fugitive pattern having a combination of properties suitable for use in ma... | 12/04/2007 |
| 7302992 | Fugitive pattern for casting A fugitive pattern for making a shell mold for investment casting a metal or alloy comprises a substantially random interpolymer and a low molecular weight polymer in proportions to provide a fugitive pattern having a combination of properties suitable for use in ma... | 12/04/2007 |
| 7288612 | Initiator composition and method for anionic polymerisation The invention relates to an initiator composition for anionic polymerization, comprising at least one alkali metal hydride selected from LiH, NaH, and KH, and at least one organylaluminum compound, and to a process for the anionic polymerization of styrene monomers ... | 10/30/2007 |
| 7285605 | Batch process for synthesizing rubbery polymers having a high trans microstructure content The present invention is directed to a batch process for synthesizing rubbery polymers, such as styrene-butadiene rubber, having a high trans microstructure. In one embodiment, the batch process involves mixing a catalyst system with styrene and butadiene monomers i... | 10/23/2007 |
| 7264036 | Fugitive pattern for casting A fugitive pattern for making a shell mold for investment casting a metal or alloy comprises a substantially random interpolymer and a low molecular weight polymer in proportions to provide a fugitive pattern having a combination of properties suitable for use in ma... | 09/04/2007 |
| 7205360 | Preparation process for block copolymers for tire tread compositions, and such copolymers 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 t... | 04/17/2007 |
| 7189792 | Catalyst for synthesizing high trans polymers The process and catalyst of this invention can be utilized to synthesize homo and copolymers of conjugated diene monomers and vinyl aromatic monomers having high trans contents of greater than 60% with low melting points. These homo and copolymers of conjugated dien... | 03/13/2007 |
| 7153629 | Releasing sheet There are disclosed a releasing sheet comprising a substrate and a releasing agent layer which is installed by coating the substrate with a releasing agent liquid containing 1,4-polybutadiene and an antioxidant, and irradiating the coated layer with ultraviolet ray ... | 12/26/2006 |
| 7125940 | Conjugated diene polymers and copolymer blocks and process for preparing same Disclosed is a process for preparing polymers and copolymer blocks of conjugated dienes with varying amounts of branching comprising the use of a microstructure control agent and a microstructure control agent deactivant. The polymerization can be started with or wi... | 10/24/2006 |
| 7101941 | Method for anionic polymerization of α-methylstyrene Process for preparing homopolymers of α-methylstyrene, or copolymers of α-methylstyrene and comonomers, by anionic polymerization in the presence of an initiator composition, which comprises using an initiator composition in which potassium hydride and at least on... | 09/05/2006 |
| 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 |
| 6979714 | Adhesion promoting agent and coating compositions for polymeric substrates The present invention provides an adhesion promoting agent which includes a graft copolymer formed by a halogenated polyolefin polymer with at least one reactive functionality and a substantially saturated hydrocarbon polymer having more than one reactive functional... | 12/27/2005 |
| 6906147 | Catalytic systems This invention relates to single-component and multi-component catalytic systems using aryl titanates. Aryl titanate compounds are useful as catalysts and co-catalysts in single-component and multi-component catalytic systems (e.g., for the polymerization of macrocy... | 06/14/2005 |
| 6878789 | Preparation process of acrylic acid ester polymer A process for the preparation of an acrylic acid ester polymer, includes carrying out polymerization of an acrylic acid ester or block copolymerization of an acrylic acid ester and another (meth)acrylic monomer in the presence of an organolithium compound and an org... | 04/12/2005 |
| 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 |
| 6777511 | Process for producing poly (meth) acrylates having reduced metal content An industrially excellent process for producing a poly(meth)acrylate having a reduced metal content which comprises contacting a mixture of a poly(meth)acrylate and an organic solvent with an acidic aqueous solution, such as an aqueous solution obtained by dissolvin... | 08/17/2004 |
| 6767976 | Process for polymerizing a methacrylic ester or an acrylic ester (1) A methacrylic ester or an acrylic ester is anionically polymerized, using a polymerization initiator compound comprising an addition reaction product of a conjugated diene compound and an organic alkali metal compound, in the presence of a tertiary organoaluminu... | 07/27/2004 |
| 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 |
| 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 |
| 6670435 | Process for synthesizing trans-1,4-polybutadiene The process and catalyst system of this invention can be utilized to synthesize polybutadiene rubber having a high trans content and a low melting point by solution polymerization. The trans-polybutadiene rubber made by the process of this invention can b... | 12/30/2003 |
| 6646075 | High molecular weight perfluorocyclobutane polymers and method of making This invention relates to high molecular weight perfluorocyclobutane polymers and methods of polymerizing trifluorovinyl monomers to form high molecular weight perfluorocyclobutane polymers in the presence of a catalyst or initiator.... | 11/11/2003 |
| 6630554 | Process for polymerizing a methacrylic ester or an acrylic ester (1) A methacrylic ester or an acrylic ester is anionically polymerized, using a polymerization initiator compound comprising an addition reaction product of a conjugated diene compound and an organic alkali metal compound, in the presence of a tertiary or... | 10/07/2003 |
| 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 |
| 6608154 | Process for synthesizing trans polydiene rubber The process and catalyst system of this invention can be utilized to synthesize polybutadiene rubber having a high trans content and a low melting point by solution polymerization. The trans-polybutadiene rubber made by the process of this invention can b... | 08/19/2003 |
| 6534608 | Support materials for use with polymerization catalysts The invention provides new olefin(s) polymerization catalyst systems, including graphite support. The invention also provides methods of preparing the catalyst system, and to the catalyst system's use in a gas or slurry polymerization process upon scan ex... | 03/18/2003 |
| 6506862 | Process for the preparation of a diene elastomer by anionic polymerization The present invention provides a process for the preparation of a diene elastomer having a reduced amount of vinyl linkages, by anionic polymerization of one or more monomers comprising at least one conjugated diene monomer. The process for preparing the ... | 01/14/2003 |
| 6489415 | Process for synthesizing trans-1,4-polybutadiene The process and catalyst system of this invention can be utilized to synthesize polybutadiene rubber having a high trans content and a low melting point by solution polymerization. The trans-polybutadiene rubber made by the process of this invention can b... | 12/03/2002 |
| 6476133 | Method for producing a solution of diene polymers in vinyl aromatic compounds and method for producing resistant vinyl aromatic polymers by polymerizing the same solution A process for preparing a solution of high molecular weight polymers of conjugated dienes in a vinylaromatic hydrocarbon by anionic polymerization of the diene in the presence of an alkyllithium as catalyst and a process for preparing impact-modified poly... | 11/05/2002 |
| 6455651 | Uniform initiation of anionic polymerization using organo-substituted alkali metal initiators The present invention is an improvement in a method of anionically polymerizing monomers by contacting them with an anionic polymerization initiator which is an organo-substituted alkali metal compound in the presence of low amounts of an accelerator/prom... | 09/24/2002 |
| 6444767 | Method for retarded anionic polymerization In a process for the homopolymerization of vinylaromatic monomers or the copolymerization of vinylaromatic monomers and dienes, the monomers are polymerized in the presence of at least one alkali metal organyl, at least one magnesium organyl and at least ... | 09/03/2002 |
| 6391981 | Increased throughput in the manufacture of anionic polymers by reduction in polymer cement viscosity through the addition of metal alkyls The present invention is an improvement upon the known method of anionically polymerizing monomers by contacting the monomers with an anionic polymerization initiator which is an organo-substituted alkali metal compound. The improvement comprises decreasi... | 05/21/2002 |
| 6388032 | Cyclic olefin polymer containing little catalyst residue A cyclic olefin polymer having a small content of a catalyst residue, a production process for the same and use of the same as an optical material. Catalysts used for polymerization and/or hydrogenation reaction for forming the cyclic olefin polymer are d... | 05/14/2002 |
| 6353056 | Method for the production of block copolymers by retarded anionic polymerization In a process for the preparation of block copolymers from vinylaromatic monomers and dienes, the monomers are polymerized in the presence of at least one alkali metal organyl or alkali metal alkoxide and at least one magnesium, aluminum or zinc organyl.... | 03/05/2002 |
| 6350834 | Method for retarded anionic polymerization In a process for the homopolymerization of vinylaromatic monomers or the copolymerization of vinylaromatic monomers and dienes in the presence of at least one alkali metal compound and at least one compound of an element of group 3a of the Periodic Table ... | 02/26/2002 |
