Patent ID: 7772349
Filing Date: 2010-08-10
Classification: C07F,C08K

Abstract:
1. A process for preparing alkylpolyether-substituted mercaptosilanes of the general formula I, wherein p is 1, 2 or 3, m is 1, 2 or 3, n and o are 0, 1 or 2, and m+p+n+o is 4, the groups X are the same or different and X is an alkylpolyether group O—((CR v=1-40, w=1-40, R Alk is a branched or unbranched, saturated or unsaturated, substituted or unsubstituted, aliphatic, aromatic or mixed aliphatic/aromatic monovalent C the groups X′ are the same or different and X′ is a branched or unbranched alkoxy group, a branched or unbranched C a C a branched or unbranched C a branched or unbranched C or a hydroxyl group (—OH), the groups X″ are the same or different and X″ indepedently at each occurance is a branched or unbranched alkyl group, R R having a Hazen colour number of ≦250 mg Pt—Co/L, comprising reacting compounds of the general formula II, wherein X′, X″, R wherein R in the presence of a proton-donating co-catalyst and a catalyst, and separating off liberated X′—H from the reaction mixture; wherein the proton-donating co-catalyst comprises an acidic ion exchange resin.