专利号:US-8299139-B1 优先权日:2009-09-08 标 题:Process and reactor for synthesis of ultra-high molecular weight acrylic polymers 发明人:TARANEKAR PRASAD; SCHUMAN AUSTIN L; BANERJIE ASIS 权利人:TARANEKAR PRASAD; SCHUMAN AUSTIN L; BANERJIE ASIS; OVATION POLYMER TECHNOLOGY AND ENGINEERED MATERIALS INC 摘要:This invention relates to a process for producing high molecular weight (HMW) and ultra-high molecular weight (UHMW) acrylic polymers having unique polymer tacticity and exhibiting enhanced thermal and mechanical properties. This process comprises polymerizing ethylenically unsaturated monomer in the presence of a free radical initiator that results in a “living-like polymer†utilizing a multi-step approach. In conducting the process of this invention the “living-like polymer†is further dissolved in a liquid carrier, wherein the said liquid carrier is a reactive diluent that can be reacted subsequently by an addition polymerization process to create a block- or multi-block, copolymer or homopolymer. This process can be progressively repeated with the same or various different reactive diluents to generate desired architecture and molecular weight polymer(s) which can be used in further processing procedures to be manufactured directly into finished articles.
专利号:US-9884879-B2 优先权日:2011-06-14 标 题:Method of synthesizing siloxane monomers and use thereof 发明人:PAULASAARI JYRI 权利人:SILECS OY 摘要:A method for preparation and polymerization of siloxane monomers of Formula I is presented. The synthesis includes the selective reaction between silanol containing unit and alkoxy containing units in the presence of basic catalyst. The siloxane monomers of the invention can be used for preparation of siloxane polymers with good flexibility and cracking threshold, and functional sites, useful for applications requiring low metal content in semiconductor industry.
专利号:US-11767388-B1 优先权日:2019-09-18 标 题 :Silicon-functionalized rubber 发明人:ENSIGN SETH CODY; VIELHABER MARGARET FLOOK; JOHNGRASS JENA LYNN; MA LIQING 权利人:GOODYEAR TIRE & RUBBER 摘要:The compatibility between silica fillers and synthetic rubbers which are synthesized utilizing lanthanide-based catalyst systems, such as neodymium catalyst systems can be improved by terminating the polymerization with a vinyl silane terminating agent. In doing so the vinyl silane is allowed to react with the polymer chain ends of the neodymium rubber to functionalize the chain ends of the polymer chains with silicon containing groups. This results in the rubber having better characteristics for utilization in tire rubber formulations, such a tire tread formulations, that exhibit improved wear characteristics and lower rolling resistance. The process for the synthesis of such functionalized polydiene rubber comprises (1) polymerizing a diene monomer in the presence of a lanthanide-based catalyst system, and (2) terminating the polymerization with a vinyl silane terminator. The functionalized polydiene rubber composition made by this method is comprised of a polydiene rubber which is functionalized at its chain ends with a silicon containing group.
专利号:US-5624569-A 优先权日:1996-01-23 标题:Clarification of deinking process water 发明人:CHUNG DANIEL K; RAMESH MANIAN; TUBERGEN KAREN R 权利人:NALCO CHEMICAL CO 摘要:The invention is a method for clarifying ink-containing effluent water from recycled paper production which comprises the step of adding a water-soluble, surface active, silicon-containing polyelectrolyte polymer coagulant to the ink-containing effluent water from recycled paper production, wherein the polymer has from 0.01 to 10 mole percent of a vinyl alkoxysilane monomer. A preferred silicon-containing polyelectrolyte polymer is the product of a free radical synthesis from vinyltrimethoxysilane and diallyldimethylammoniumchloride monomers.
专利号:US-10011664-B2 优先权日:2011-02-04 标 题:Functionalized nitrile rubbers and the production thereof 发明人:OBRECHT WERNER; JESCHKO JULIA MARIA; NUYKEN OSKAR; SCHNEIDER MARTIN 权利人:OBRECHT WERNER; JESCHKO JULIA MARIA; NUYKEN OSKAR; SCHNEIDER MARTIN; ARLANXEO DEUTSCHLAND GMBH 摘要:Provided are new functionalized nitrile rubbers, which may optionally also be in partially or wholly hydrogenated form, and also a process for preparing them by metathesis of nitrile rubbers in the presence of a metathesis catalyst and at least one functionalized allyl compound. The new functionalized nitrile rubbers are suitable for producing vulcanizable mixtures and allow the production of vulcanizates having very stable networks. Also made possible, in particular, is the synthesis of block copolymers.
专利号:US-2025084108-A1 优先权日:2021-12-30 标题:Silylating grafting agents, polymers grafted therewith and methods of synthesis 发明人:TAMANG SEM; CHISHOLM BRET J 权利人:BRIDGESTONE CORP 摘要:Silylating grafting agents and methods for synthesizing the same. The grafting agents are used to produce functionalized polydiene polymers by modifying the backbone of the polymer. Methods for functionalizing a polydiene post-polymerization using hydrosilylation are described. Hydrosilylation provides an advantage of incorporating multiple functional groups on the backbone of the polymer which lead to improved properties, such as rolling resistance, wet traction and polymer filler interaction.