A method for preparing organo - functional groups containing organopolysiloxanes and organopolysiloxanes, mercapto - and alkoxy groups containing organopolysiloxanes, and production method thereof

摘要

A process for preparing an organic functional group-containing organopolysiloxane of the following average compositional formula (1)        YmR¹nSi(OR²)pO(4-m-n-p)/2   (1)wherein Y represents an organic group having a functional group, R¹ represents at least one monovalent substituted or unsubstituted hydrocarbon group, R² represents a hydrogen atom, an alkyl group and/or an alkenyl group, 0m≦1, 0≦n2, and 0≦p≦2 provided that 0m+n+p≦3 . The organopolysiloxane is obtained by subjecting an organic functional group-containing alkoxysilane or its mixture with a functional group-free alkoxysilane, siloxane or silicone obtained from the group-free alkoxysilane and/or siloxane , to hydrolysis and polycondensation in the presence of a substantially neutral fluorine-containing compound. The functional group includes an epoxy group, a (meth)acryloxy group, a mercapto group and the like. Organopolysiloxanes having both a mercapto group and alkoxy group are novel ones.