申请人:Union Carbide Corporation
公开号:US04160775A1
公开(公告)日:1979-07-10
Organic compounds having the formula CH.sub.2 .dbd.C(R.degree.)CH.sub.3-m X.sub.m including those having alkallyl groups such as: CH.sub.2 .dbd.C(C.sub.n H.sub.2n+1)CH< and CH.sub.2 .dbd.C(C.sub.n H.sub.2n+1)CH.sub.2 --, wherein R.degree. is a monovalent hydrocarbon group are reacted with organohydrosiloxanes under hydrosilation reaction conditions to form useful organofunctional polysiloxanes. The functional groups represented by X include a hydrocarbonoxy group, a cyanohydrocarbonoxy group, an acyloxy group, a halogen atom, a hydroxy group, a cyano group or a group having the formula --OC(O)NR.sub.2 wherein R is a monovalent nitrogen-free organic radical, a divalent hydrocarbon group or hydrogen and may be the same or different throughout the same group or molecule, n is an integer of 1 to 18, m is an integer of 1 and when X is hydrocarbonoxy or acyloxy, m is 1 or 2. The very low degree (if any) of isomerization of the CH.sub.2 .dbd.C(R.degree.)CH.sub.3-m group to unreactive species during the hydrosilation reaction results in high yields of the desired organofunctional polysiloxanes in the process of the present invention.
具有化学式CH.sub.2 .dbd.C(R.degree.)CH.sub.3-m X.sub.m的有机化合物,包括具有烷基基团的化合物,例如:CH.sub.2 .dbd.C(C.sub.n H.sub.2n+1)CH<和CH.sub.2 .dbd.C(C.sub.n H.sub.2n+1)CH.sub.2 --,其中R.degree.是一价的碳氢化合物基团,与有机氢氧化硅烷在氢硅化反应条件下反应,形成有用的有机功能性聚硅氧烷。X所代表的功能基团包括碳氢氧基团、氰基碳氢氧基团、酰氧基团、卤素原子、羟基、氰基或具有化学式--OC(O)NR.sub.2的基团,其中R是一价的无氮有机基团、双价的碳氢基团或氢,并且可以在同一基团或分子中相同或不同,n为1到18的整数,m为1的整数,当X为碳氢氧基或酰氧基时,m为1或2。在氢硅化反应过程中,CH.sub.2 .dbd.C(R.degree.)CH.sub.3-m基团向不反应的物种的异构化程度非常低(如果有的话),从而导致所需有机功能性聚硅氧烷的高产率。