专利号:WO-2024216794-A1 优先权日:2023-04-17 标 题:Implantable material and synthesis method therefor and prosthetic heart valve 发明人:WANG LICHAO; WEI XING; KUANG DAJUN 权利人:VENUS MEDTECH HANGZHOU INC 摘要:The present application discloses an implantable material and a synthesis method therefor and a prosthetic heart valve. The implantable material uses polyurethane, the molecular chain structure of polyurethane comprises a soft segment and a hard segment, and a functional branched chain is grafted onto the hard segment; the solubility parameter of the functional branched chain is 6-8. According to the present application, by introducing the functional branched chain into the hard segment, the compatibility between the hard segment and the soft segment is improved and the stress transfer points between the hard segment and the soft segment are increased, so that the prepared implantable polymer material has excellent mechanical properties.
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.
参考文献:10.1134/s1070363206060120 摘要:Belyakova ZV, Chernyshev EA, Storozhenko PA, Knyazev SP, Turkel’taub GN, Parshina EV, Kisin AV. Hydrosilylation of cyclohexene and allyl chloride with trichloro-, dichloro(methyl)-, and chlorodimethylsilanes in the presence of Pt(0) complexes. Russian Journal of General Chemistry. 2006 Jun;76(6):925–30. doi: 10.1134/s1070363206060120.