CAS: 56706-10-6; 4,4,13,13-Tetraethoxy-3,14-Dioxa-8,9-Dithia-4,13-Disilahexadecane

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3-巯丙基三乙氧基硅烷置于manganese(Iv) Oxide体系中,用 氯仿 作为反应溶剂,化学反应 1.0H,反应生成 双-[3-(三乙氧基硅)丙基]-二硫化物
参考文献:Sulfur-Modified Sba-15 Supported Amorphous Palladium With Superior Catalytic Performance For Aerobic Oxidation Of Alcohols
标题:Sulfur-Modified Sba-15 Supported Amorphous Palladium With Superior Catalytic Performance For Aerobic Oxidation Of Alcohols
摘要:A Series Of Sulfur-Modified Sba-15 Supported Amorphous Palladium Catalysts Are Prepared,And The Effects Of Preparation Parameters On The Aerobic Oxidation Of Benzyl Alcohol Are Systematically Investigated. The Optimal Catalyst Exhibits Remarkably Enhanced Catalytic Activity (Conversion 100 % And Selectivity 99 %) And Could Be Separated Conveniently. The Catalysts Are Characterized By X-Ray Diffraction Patterns,Bet,Icp,X-Ray Photoelectron Spectroscopy,Co Chemisorption And Transmitting Electron Microscopy,And The Results Show That Disulfur Bond Framework In The Optimal Catalyst Act As Both A Stable Linker And A Good Chelator For Pd Species. Pd2+ Is Reduced To Pd-0 With The Increasement Of The Carbon Chain Lengths Between Sulfur Bonds,Which Is The Cause Of Deactivation. The Mechanism Is That A Base Abstracts A Proton From The Coordinated Alcohol To Form A Pd Alcoholate Species That Subsequently Undergo Beta-Hydride Elimination To Give Benzyl Aldehyde,Which Is Confirmed By The Catalytic And Characteristic Results.
DOI:10.1007/s10562-013-1184-2

专利信息

专利号:US-5663395-A
优先权日:1995-11-07
标 题:Process for the selective synthesis of silylalkyldisulphides
发明人：GOEBEL THOMAS; MUENZENBERG JOERG
权利人:DEGUSSA
摘要:A process is disclosed for the selective synthesis of silylalkyldisulphides by desulphurization of the corresponding polysulphides using nucleophilic reagents.

专利号:US-11591428-B2
优先权日:2017-12-26
标 题:Synthesis of low molecular weight tapered styrene-butadiene copolymer and its use in tires
发明人：ZHAO WEI; CHEN YAOHONG
权利人:BRIDGESTONE CORP
摘要:Methods are described for the preparation of tapered styrene-butadiene copolymers for use as partial or full oil replacements in rubber compositions. The resulting rubber compositions exhibit improved storage modulus and wear resistance properties.

专利号:US-2002068798-A1
优先权日:2000-10-13
标题:Synthesis of tin/silicon coupled rubbery polymers
发明人：HALASA ADEL FARHAN; HSU WEN-LIANG
摘要:Rubbery polymers made by anionic polymerization can be coupled with tin halides or silicon halides to improve the characteristics of the rubber for use in some applications, such as tire treads. In cases where the rubbery polymer is synthesized by anionic polymerization utilizing a polar modifier it is difficult to attain a high level of coupling. This invention is based upon the unexpected finding that the coupling efficiency of rubbery polymers made with polar modifiers can be significantly improved by initiating the anionic polymerization with an alkylsilyloxy protected functional lithium initiator having a structural formula selected from the group consisting of: (a): n n n wherein X represents a group IVa element selected from the group consisting of carbon, silicon, germanium, and tin, wherein Y represents phosphorous or nitrogen, wherein R represents alkyl groups that can be the same or different, wherein the alkyl groups contain from 1 to about 8 carbon atoms, and wherein A represents an alkylene group containing from 1 to about 12 carbon atoms.

专利号:US-11142021-B2
优先权日:2014-10-24
标 题 :Chain end functionalized polyolefins for improving wet traction and rolling resistance of tire treads
发明人：BLOK EDWARD J; YANG YONG; ZHANG JINGWEN; STEWART IAN C; LUO SHUJI; TSOU ANDY H
权利人:EXXONMOBIL CHEMICAL PATENTS INC
摘要:A functionalized polyolefin and a tire tread composition comprising the functionalized polyolefin is described. The functionalized polyolefin comprises a vinyl/vinylidene-terminated polyolefin in which the vinyl/vinylidene terminus is functionalized with an alkoxysilane or an alkylsilane and optionally having ether, hydroxyl and/or amine functionality. The invention is also directed to the synthesis of vinyl/vinylidene-terminated polyolefins, functionalization at the vinyl/vinylidene terminus with an alkoxysilane or an alkylsilane and optionally having ether, hydroxyl and/or amine functionality.

专利号:US-6172251-B1
优先权日:1998-07-24
标题:Solid/liquid phase transfer system
发明人：PARKER DANE KENTON
权利人:GOODYEAR TIRE & RUBBER
摘要:The present invention discloses a technique for reacting a first liquid chemical compound with a second liquid chemical compound which comprises (1) supporting the first liquid chemical compound on a solid support; (2) subsequently bringing the solid support into contact with the second liquid chemical compound; and (3) allowing the first chemical compound to react with the second chemical compound in the presence of a phase transfer catalyst to produce a reaction product. This technique is particularly useful in the synthesis of sulfur containing organosilicon compounds of the formula Z-Alk-Sn-Alk-Z wherein Z is selected from the group consisting ofwherein R1 is an alkyl group of 1 to 4 carbon atoms, cyclohexyl or phenyl; wherein R2 is alkoxy group of 1 to 8 carbon atoms, cycloalkoxy group of 5 to 8 carbon atoms or an alkylmercapto group of 1 to 8 carbon atoms; wherein Alk is a divalent hydrocarbon of 1 to 18 carbon atoms; and wherein n is an integer of 2 to 8. For instance, such sulfur containing organosilicon compounds can be made by reacting aqueous solutions of various polysulfidic anions in saturated sodium chloride brine solutions with chloropropyltriethoxysilane (CPTES) supported on carbon black in the presence of a phase transfer catalyst.

专利号:US-2010003204-A1
优先权日:2008-07-02
标 题 :Nanoparticle hybrid sunscreens
发明人：LOY DOUGLAS ANSON; SHEA KENNETH J; BODAY DYLAN J; WERTZ JASON T
权利人:ENERGY MATERIALS CORP
摘要:The invention discloses and claims a new class of chemical compositions with ideal sunscreen properties. The chemical composition comprises spherical particles between 200 nm and 10 microns in diameter prepared by an emulsion polymerization of tetraalkoxysilanes or organotrialkoxysilanes or organobridged trialkoxysilanes with a dye monomer bearing two or more alkoxysilyl groups attached to the bridging chromophore. The resulting spheres absorb ultraviolet light. The dye can be any organic chromophore capable of receiving multiple trialkoxysilyl groups resulting in multipoint covalent attachment that precludes leaching of the dye from the spheres. The formic acid-toluene-monomer emulsion polymerization allows for large-scale (>100 gram) synthesis of monodisperse particles under acidic, non-aqueous conditions without surfactants. The particles less than 1 micron in diameter are smooth as talc to the touch and will provide a smooth formulation for sunscreen creams or lotions.