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-5194648-A 优先权日:1989-08-02 标题 :Fluorinated carboxylic acid derivatives and methods for making 发明人:SATOH SHINICHI; KOIKE NORIYUKI; FUJII HIDEKI 权利人:SHINETSU CHEMICAL CO 摘要:Novel fluorinated carboxylic acid derivatives of the general formula: ##STR1## wherein Rf is a divalent perfluoroalkyl or perfluoropolyether group and Z is halogen, hydroxyl or triorganosiloxy are useful intermediate for the synthesis of various fluorinated compounds. Compounds [I-i] wherein Z in formula [I] is F are prepared by reacting acid fluoride-terminated compounds of the formula: ##STR2## with an alkali fluoride and further with an allyl halide. Compounds [I-ii] wherein Z in formula [I] is a halogen are preparred by reacting compounds [I-i] with lithium halide. Compounds [I-iii] wherein Z in formula [I] is OH are prepared through hydrolysis of compounds [I-ii]. Compounds [I-iv] wherein Z in formula [I] is triorganosiloxy are prepared by reacting compounds [I-iii] with a triorganosilylating agent.
专利号:EP-0179355-B1 优先权日:1984-10-09 标 题 :Novel terpene derived functional silanes 摘要:Novel epoxyterpenylsilanes containing chiral centers have been prepared in a two-step synthesis. Terpenes, such as myrcene, dihydromyrcene, limonene, 5-ethylidene-2-norbornene and 5-vinyl-2-norbornene, are first epoxidized to the terpene oxide which is then condensed with alkoxy or alkylalkoxysilanes in the presence of a hydrosilation catalyst.
专利号:US-2010117066-A1 优先权日:2007-04-28 标题:Organic Semiconductors 发明人:HEENEY MARTIN; ZHANG WEINMIN; MCCULLOOCH IAIN 权利人:MERCK PATENT GMBH 摘要:The invention relates to novel substituted dibenzo[d,d′]benzo[1,2-b;4,5-b′]dithiophenes (DBBDT), to methods of their synthesis, to organic semiconducting materials, formulations and layers comprising them, and to electronic devices, like organic field effect transistors (OFETs), comprising them.
参考文献:10.1007/s12633-022-02064-0 摘要:Wong MY, Vishnu IL, Bui R, Chen Y, Schneider AF, Brook MA. T- and Q-rich Linear Silicones from the Piers-Rubinsztajn Reaction. Silicon. 2022 Aug 18;15(2):887–95. doi: 10.1007/s12633-022-02064-0.