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| Number | Title | Issue Date |
| 7737234 | Catalysts for radical polymerization Provided is a method for polymerizing a polymer precursor, comprising: contacting a polymer precursor with a lithium carborane catalyst and an initiator under polymerizing conditions. A reaction solvent may be used, but is not necessary. Also provided is a method of... | 06/15/2010 |
| 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 |
| 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 |
| 7371466 | Polymerisation initiators, polymerisable compositions, and uses thereof for bonding low surface energy substrates Quaternary boron salts are used as initiators of polymerisation in adhesive compositions for bonding low surface energy substrates such as polyolefins. The quaternary boron salts are of the formula I wherein R1 i... | 05/13/2008 |
| 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 |
| 7335712 | Process of producing a siloxy-functionalized polymer This invention relates to siloxy-functionalized polymers having the silicon of the siloxy group directly bonded to the end of a polymer chain through one or more carbon atoms, processes of producing the polymers, and initiators used to prepare the polymers. The poly... | 02/26/2008 |
| 7247596 | Stabilized organoborane polymerization initiators and polymerizable compositions The invention is polymerizable compositions comprising in one part an organoboron compound capable of forming a free radical generating species and a stabilizing amount of one or more compounds comprising a dihydrocarbyl hydroxyl amine, an alicyclic hydroxyl amine, ... | 07/24/2007 |
| 7202373 | Monocyclopentadienyl complexes Monocyclopentadienyl complexes in which the cyclopentadienyl system bears at least one uncharged donor bound via a boron-containing bridge and comprising one or more atoms of group 15 and/or 16 of the Periodic Table of the Elements and is bound to a metal selected f... | 04/10/2007 |
| 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 |
| 7129294 | Functional groups-terminated vinyl polymers A vinyl polymer which has at least one terminal functional group per molecule and has a ratio of weight average molecular weight to number average molecular weight of less than 1.8 as determined by gel permeation chromatography, said terminal functional group being ... | 10/31/2006 |
| 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 |
| 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 |
| 6943219 | Polymer and epoxy resin compositions The present invention provides a vinyl polymer with an epoxy group terminally introduced therein and an epoxy resin composition comprising (A) an epoxy resin and (B) a vinyl polymer which has a main chain produced by living radical polymerization and has a reactive ... | 09/13/2005 |
| 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 |
| 6939916 | Adhesion promoter, coating compositions for adhesion to olefinic substrates and methods therefor The composition is an adhesion promoter that includes a chlorinated polyolefin and an olefin-based block copolymer that has an olefin block that is substantially saturated and at least one (poly)ester or (poly)ether block. The olefin-based block copolymer can be pre... | 09/06/2005 |
| 6844080 | Metal alkyl borphydride polymerisation initiators, polymerisable compositions, and uses thereof Metal alkyl borohydrides are used as initiators of polymerisation, particularly in adhesive compositions for bonding a wide range of substrates including low surface energy substrates such as polyolefins. As described, the metal alkyl borohydrides are of the formula... | 01/18/2005 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 6559240 | Process for tin/silicon coupling functionalized rubbers Rubbery polymers made by anionic polymerization can be coupled with both tin halides and silicon halides to improve the characteristics of the rubber for use in some applications, such as tire treads. In cases where the rubbery polymer is synthesized by a... | 05/06/2003 |
| 6541585 | Polymerization of olefins Polymers are produced using transition metal complexes that have sites capable of binding a Lewis acid in close proximity to the metal center.... | 04/01/2003 |
| 6489262 | Initiation system and process for anionic (co) polymerization of (Meth) acrylic, vinylaromatic and/or diene monomers The present invention relates to an initiation system composed of the reaction product of at least one cyclic siloxane and at least one organometalic compound of sufficient reactivity to open the siloxane ring. Application of the present invention is to the pr... | 12/03/2002 |
| 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 |
| 6417302 | Compounds containing boron and aluminium The present invention relates to a chemical compound of the formula A ##STR1## The compound can be employed as a catalyst component for the polymerization of olefins.... | 07/09/2002 |
| 6395847 | Supported organometallic catalysts and their use in olefin polymerization The invention is directed to organometallic catalysts prepared by a process comprising a) combining nucleophilic group-containing particulate support material with an arylboron or arylaluminum Lewis acid compound in the presence of a Lewis base compound; ... | 05/28/2002 |
| 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 |
| 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 |
| 6329480 | 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... | 12/11/2001 |
| 6284905 | Bridged metal complexes A Group 4 transition metal complex containing a boron or aluminum bridging group containing a nitrogen containing electron donating group, especially an amido group.... | 09/04/2001 |
| 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 |
| 6162853 | Method for producing a shaped piece suitable for optical purposes Described is a process for preparing a molding suitable for optical purposes, which process comprises the conjoint free-radical polymerization of a precondensate (A) which is derived from at least one hydrolytically condensable silane (a) having at least ... | 12/19/2000 |
| 6160054 | Hetero-telechelic polymers and processes for making same Hetero-telechelic polymers having the formula: FG--(Q)d --Z--J--[A(R1 R2 R3)]x (I) wherein FG is a protected or non-protected functional group; Q is a saturated or unsaturated hydrocarbyl group derived by inc... | 12/12/2000 |
| 6153706 | Protected multi-functionalized star polymers and processes for making the same This invention provides novel protected, multi-functionalized multi-arm polymers, their optionally hydrogenated analogues and optionally deprotected analogues thereof, and processes for making these compounds. In the invention, monomers are polymerized us... | 11/28/2000 |
| 6150487 | Multifunctional organic alkali metal initiator and its synthesis, anionic polymerized star polymers and their preparation This invention relates to a multifunctional organic alkali metal initiator for the preparation of various kinds of star polymers by anionic polymerization, a process for making the initiator, a process using said initiator for making star polymers and the... | 11/21/2000 |
| 6103846 | Process for making anionic polymeric di-and polyfunctional polymers using protected functional initiators The preparation of di- or polyfunctional polymers by anionic polymerization using functionalized initiators having the structure R1 R2 R3 Si--A--B, wherein each R is methyl and A is a hydrocarbon bridging group containing ... | 08/15/2000 |
| 5900464 | Processes for making methacrylate and acrylate polymers 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 incor... | 05/04/1999 |
| 5849847 | Telechelic polystyrene/polyethylene copolymers and processes for making same Polyalkenylaromatic-polyethylene copolymers are prepared using protected functional organolithium initiators. Polymerization of an alkenylsubstituted aromatic monomer followed by ethylene, results in a protected functional block polystyrene-co-polyethylen... | 12/15/1998 |
