📜Trivinylsilane置于三氯异氰尿酸体系中,用 二氯甲烷 用作溶剂,以98.7%的收率获得三乙烯基氯硅烷 参考文献:Utility Of Trichloroisocyanuric Acid In The Efficient Chlorination Of Silicon Hydrides 标题:Utility Of Trichloroisocyanuric Acid In The Efficient Chlorination Of Silicon Hydrides 摘要:The Potential Of Trichloroisocyanuric Acid (Tcca) As A Chlorination Agent For Efficient Conversion Of Si-H Functional Silanes And Siloxanes To The Corresponding Si-Cl Functional Moieties Was Explored. In Comparison To Methods Using Other Chlorinating Agents,Tcca Is Inexpensive,Results In A Much Faster Reaction And Produces A High Purity Product With A Conversion That Is Essentially Quantitative. A Variety Of Chloro Derivatives Of Linear And Cyclic Structures Have Been Synthesized From Silicon Hydrides Using This Reagent With Impressive Yields That Typically Exceed 90%: Phsicl3 (97.5%); Phmesicl2 (95.5%); Ph3Sicl (97.5%); Vi(3)Sicl (98.7%); (Eto)(3)Sicl (99.7%); T-Bu3Sicl (Similar To 100%); (Meclsio)(4) (86.5%); (Meclsio)(5) (95%); (Meclsio)(7) (96.5%); Ph(Oet)(2)Sicl (98%); Clme2Siosime2Cl (98.6%); Clme2Siosimeclosime2Cl (94.6%); Clme2Si(Osimecl)(2)Osime2C L (92.3%); (Me3Sio)(3)Sicl (97%); Me3Siosiclphosime3 (99%); Me3Sio(Simeclo)(3)Sime3 (95.7%); Clsi(Osime3)(2)Osi(Osime3) Cl-2 (93.6%).For Monohydridosilanes,Dichloromethane (Ch2Cl2) Was A Suitable Solvent In Which Nearly Quantitative Conversion Was Observed Within Several Minutes Following The Addition Of The Silanes To Tcca. For Certain Cyclic And Linear Siloxanes,And Especially Silanes Containing Multiple Hydrogen Atoms On The Same Silicon For Which The Reaction Is Sluggish In Ch2Cl2,Tetrahydrofuran (Thf) Was The Preferred Solvent. For A Sterically Demanding Silane That Did Not Undergo Chlorination Even In Thf Viz.,Hsi(Osime3)(2)O-Si(Osime3)(2)H,1,2-Dichloroethane Was The Best Solvent. (C) 2007 Elsevier B.V. All Rights Reserved. Doi:10.1016/j.Jorganchem.2006.12.032
专利号:US-3940374-A 优先权日:1967-09-06 标 题 :Synthesis of polythiol polymer intermediates from polyunsaturated hydrocarbons 发明人:OSWALD ALEXIS A; MUELLER WOLFGANG H; HALL DANIEL N 权利人:EXXON RESEARCH ENGINEERING CO 摘要:Polythiols having more than two terminal and/or pendant thiol groups per polymer molecule are formed by the free radical catalyzed addition of a monomer system made up of either hydrogen sulfide or a dithiol alone or in combination with an acetylenic compound to a polyolefin having at least three olefin sites. The polyolefin is preferably a tri-terminal olefin. The polythiol products are liquid, essentially gel-free materials having number average molecular weights varying from 200 to 30000. The polyfunctional prepolymers of the invention can be cured to stable three-dimensional networks with inexpensive bi-functional oxidants such as lead dioxide. Additionally, prepolymer compositions having 3 or more pendant or terminal thiol groups per molecule when combined with polyfunctional organic reagents, such as diepoxides, form stable, high-tenacity adhesive systems.
专利号:US-3625925-A 优先权日:1967-09-06 标题 :Synthesis of polythiol polymer intermediates from polyunsaturated hydrocarbons 发明人:OSWALD ALEXIS A; MUELLER WOLFGANG H; HALL DANIEL N 权利人:EXXON RESEARCH ENGINEERING CO 摘要:Polythiols having more than two terminal and/or pendant thiol groups per polymer molecule are formed by the free radical catalyzed addition of a monomer system made up of either hydrogen sulfide or a dithiol alone or in combination with an acetylenic compound to a polyolefin having at least three olefin sites. The polyolefin is preferably a triterminal olefin. The polythiol products are liquid, essentially gel-free materials having number average molecular weights varying from 200 to 30,000. The polyfunctional prepolymers of the invention can be cured to stable three-dimensional networks with inexpensive bi-functional oxidants such as lead dioxide. Additionally, prepolymer compositions having 3 or more pendant or terminal thiol groups per molecule when combined with polyfunctional organic reagents, such as diepoxides, form stable, high-tenacity adhesive systems.
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-6384172-B1 优先权日:2001-01-02 标题:Hyperbranched polycarbosilanes, polycarbosiloxanes, polycarbosilazenes and copolymers thereof 发明人:DVORNIC PETAR R; HU JIN; MEIER DALE J; NOWAK ROBERT M 权利人:MICHIGAN MOLECULAR INST 摘要:Hyperbranched polycarbosilanes, polycarbosiloxanes, polycarbosilazenes and copolymers thereof are prepared by reacting a difunctional or polyfunctional monomer having functional groups of one type (A) without any other functional groups capable of reacting significantly during polymerization, and a difunctional or polyfunctional monomer having functional groups of another type (B) without any other functional groups capable of reacting significantly during polymerization, wherein each A-functional group is reacted with a B-functional group, and wherein at least one of the monomers has a functionality of at least three. The process enables hyperbranched polycarbosilanes, polycarbosiloxanes, polycarbosilazenes and copolymers thereof to be prepared at a lower cost than with conventional synthesis processes, and provides greater flexibility in the preparation of a larger variety of different types of hyperbranched polycarbosilanes, polycarbosiloxanes, polycarbosilazenes and copolymers thereof.
专利号:CN-107936254-A 优先权日:2017-11-24 标 题:Synthesis method of silicone special resin for LED chip bonding
专利号:CN-104177619-B 优先权日:2014-08-04 标 题 :The synthesis method of organic silicon resin of LED encapsulation core shell structures