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| Number | Title | Issue Date |
| 7399814 | Living radical polymerization method A highly active and environment-friendly catalyst for use in a living radical polymerization is provided. A catalyst for use in a living radical polymerization method is provided. The catalyst comprises a central element, which is selected from germanium, tin... | 07/15/2008 |
| 7393909 | Porous, molecularly imprinted polymer and a process for the preparation thereof A porous, molecularly imprinted polymer and a process for its preparation are described. The porous, molecularly imprinted polymer is characterized in that it is obtainable by providing a porous silica; attaching a molecular template to the surface of the porous sil... | 07/01/2008 |
| 7119155 | Polymerized catalyst composition II Copolymerization of Ni(II) phenol imine complexes containing olefinic substituents on aryl groups with styrene in the presence of a radical initiator results in polymerized late transition metal catalysts which can be used for olefin polymerization or oligomerizatio... | 10/10/2006 |
| 6881803 | Method for producing copolymer of alkylvinyl ether and maleic anhydride, and copolymer of alkylvinyl ether and meleic anhydride In the first aspect of the present invention, there is disclosed a method for producing a copolymer of an alkyl vinyl ether and maleic anhydride which comprises removing an organic solvent used in a reaction under a temperature so that a slurry state can be maintain... | 04/19/2005 |
| 6794467 | Process for the preparation of polymeric absorbents The invention discloses a process for the preparation of polymeric absorbents useful for gelling organic liquids. The process comprises mixing one or more monomers with a cross-linking agent, a free radical initiator, an optional solvent, optionally in the presence ... | 09/21/2004 |
| 6706832 | Process for the controlled radical polymerization or copolymerization of ethylene under high pressure in the presence of initiating free radicals and of controlling indoline nitroxide radicals Polymers are obtained by a radical (co)polymerization of ethylene under high pressure in the presence of at least one initiating free radical (Z*) and of at least one controlling stable free radical (SFR*) which comprises the indoline nitroxide backbone represented ... | 03/16/2004 |
| 6699949 | Process of preparing maleic anhydride modified polyolefins by the oxidation adducts of borane and maleic anhydride An in situ controlled oxidation reaction of trialkylborane (BR3) in the presence of polyolefin and maleic anhydride produces mono-oxidized trialkylborane adducts, i.e., peroxyldialkylborane (R--O--O--BR2), that can undergo homolytic ... | 03/02/2004 |
| 6531556 | Process for the controlled radical polymerization or copolymerization of ethylene under high pressure in the presence of initiating free radicals and of controlling indoline nitroxide radicals A radical (co)polymerization of ethylene is carried out under high pressure in the presence of at least one initiating free radical (Z.cndot.) and of at least one controlling stable free radical (SFR.cndot.) which comprises the indol... | 03/11/2003 |
| 6515088 | "Living" free radical polymerization process A new class of "living" free radical initiators that are based on alkylperoxydiarylborane and its derivatives and that may be represented by the general formula. R--[O--O--B--$c;1 (--$c;2)]n wherein n is from 1 to 4, R is... | 02/04/2003 |
| 6420502 | Living free radical initiators based on alkylperoxydiarylborane derivatives and living free radical polymerization process A new class of "living" free radical initiators that are based on alkylperoxydiarylborane and its derivatives and that may be represented by the general formula. R--[O--O--B-$c;1 (-$c;2)]n wherein n is from 1 to 4, R is a... | 07/16/2002 |
| 6166160 | Process for making deodorized rubbery polymer There is a need for odorless rubbery polymers that offer high heat resistance, ultraviolet light resistance and low fogging characteristics. For instance, rubbery polymers of this type are needed by the automotive and construction industries. The deodoriz... | 12/26/2000 |
| 6117961 | Crosslinkable styrene based polymers having narrow molecular weight distribution The present invention provides a process for producing a crosslinkable styrene or styrene derivative polymer having narrow molecular weight distribution by radical polymerization of a styrene or styrene derivative monomer and other comonomer, wherein the ... | 09/12/2000 |
| 5973087 | Process for the production of ethylene co-polymers Disclosed is a catalyst system for the production of ethylene co-polymers by co-polymerisation of ethylene with further polymerisable monomers in the presence of a peroxide catalyst. The catalyst system contains components (A) and (B), component (A) being... | 10/26/1999 |
| 5817376 | Free-radically polymerizable compositions capable of being coated by electrostatic assistance Compositions containing conductivity enhancers, which are capable of being coated onto a substrate by means of electrostatic assistance. The compositions comprise one or more free-radically curable monomer(s), and one or more non-volatile conductivity enh... | 10/06/1998 |
| 5756616 | Process for the production of polyolefins and a catalyst for carrying out the process For the production of polyolefins by polymerization of -olefins in the presence of a peroxide catalyst a catalyst system is used as the catalyst which is composed of the components (A) and (B) in which: (A) denotes at least one compound selected from th... | 05/26/1998 |
| 5744560 | Metal accelerated polymerization processes A free radical polymerization process for the preparation of a polymer comprising heating a mixture of a free radical initiator, a stable free radical agent, a metal catalyst, or a metal stable free radical complex catalyst, and at least one polymerizable... | 04/28/1998 |
| 5312871 | Free radical polymerization process This invention concerns a "living" free radical polymerization process for preparing polymers having a narrow distribution of molecular weights.... | 05/17/1994 |
| 5043515 | Ethylene oligomerization catalyst and process This invention relates to an oligomerization catalyst comprising a zirconocene and one or more alkyl aluminoxanes wherein the alkyl is selected from methyl, ethyl and mixtures thereof and the ratio of equivalents of methyl to ethyl in the product ranges f... | 08/27/1991 |
| 4605716 | Lewis base-catalyzed polymerization Polymerization of polar monomers, for example, (meth)acrylates, N,N-dialkyl(meth)acrylamides, (meth)acrylonitrile and mixtures thereof, with selected initiators and selected Lewis base catalysts.... | 08/12/1986 |
| 4588795 | Oxyanion-catalyzed polymerization This invention resides in a polymerization process which is catalyzed by an oxyanion which can form a conjugate acid having a pKa (DMSO) of about 5 to about 24.... | 05/13/1986 |
| 4389514 | Accelerated polymerization of acrylic monomers initiated by dialkyl and diaralkyl peroxide free radical generators in the presence of tin accelerators A method of increasing the reaction rate of the polymerization and/or cross-linking of reactive polymerizable and/or cross-linkable acrylic monomeric materials initiated by dialkyl or diaralkyl peroxides as the free radical generator which comprises carry... | 06/21/1983 |
| 4121032 | Process for preparing alternating copolymer of conjugated vinyl compound and olefinic unsaturated compound with oxygen and boron compound An alternating copolymer of an olefinic unsaturated compound and a conjugated vinyl compound is produced by contacting said monomers with at least one organoboron halide or/and a mixture of at least one organo-compound of metal from Groups IIb, IIIb and I... | 10/17/1978 |
| 4107418 | Process for preparing copolymers An improved process for copolymerizing the monomers (a) at least one monomer selected from the group consisting of monoolefins, non-conjugated polyenes, conjugated polyenes, haloolefins, unsaturated esters of carboxylic acids and unsaturated ethers and (b... | 08/15/1978 |
| 4092469 | Cleavable branching agents in emulsion polymerization systems Bis(1,3-dienyl)dialkyltin, lead, and germanium compounds employed in the aqueous emulsion polymerization of conjugated dienes, optionally with vinyl comonomers, provide polymers with sufficiently high Mooney viscosity values as to be readily handled in pl... | 05/30/1978 |
| 4079074 | Unsymmetrical diperoxides and processes of use in polymerizing unsaturated monomers Unsymmetrical diperoxides of the general structure: ##STR1## for example, 4-(t-butylperoxycarbonyl)-3-hexyl-6-[7-(tbutylperoxycarbonyl)heptyl] cyclohexene, are useful for polymerizing ethylenically unsaturated monomers (such as styrene). The pol... | 03/14/1978 |
| 4048425 | Alternating elastomeric interpolymers Alternating elastomeric interpolymers comprised of: (A) about 50 mol percent of one or more acyclic or alicyclic esters of acrylic acid wherein the ester radical moiety is free of olefinic unsaturation or readily replaceable halogen; (B) one or more of ac... | 09/13/1977 |
| 4008175 | Organic acid anhydride-peroxydicarbonate composition Ethylenically unsaturated material susceptible to free-radical polymerization, e.g., vinyl chloride and unsaturated polyesters, is polymerized, e.g., in an aqueous medium with an alkaline buffering reagent and an initiator system comprising an acid anhydr... | 02/15/1977 |
| 3989882 | Process for preparing an alternating copolymer of a conjugated vinyl compound and an olefinic unsaturated compound An alternating copolymer of an olefinic unsaturated compound and a conjugated vinyl compound is produced by contacting said monomers with at least one organoboron halide or/and a mixture of at least one organo-compound of metal from Groups IIb, IIIb and I... | 11/02/1976 |
| 3957732 | Alternating copolymers having functional group and process for producing same Novel alternating copolymers having functional groups are prepared by subjecting to alternating copolymerization at least one olefin, at least one acrylic ester and at least one ,ଲ-ethylenically unsaturated dicarboxylic acid or its derivative... | 05/18/1976 |
