Patent ID: 6528673
Filing Date: 2003-03-04
Classification: C07F,C08J,C08K,C08L

Abstract:
A process for the manufacture of a blocked mercaptosilane wherein the process is selected from the group consisting of: (1) reacting a mercaptosilane and a monoacid anhydride or monoacid halide corresponding to a thioester group present in the desired product; (2) reacting an alkali metal salt of a mercaptosilane with an appropriate acid anhydride or acid halide; (3) transesterifying a mercaptosilane and an ester in the presence of an alkali metal salt of an acid corresponding to the ester; (4) transesterifying a thioester silane and another ester; (5) transesterifying a 1-sila-2-thiacyclopentane or a 1-sila-2-thiacyclohexane and an ester; and (6) reacting an alkali metal salt of a thioacid with a haloalkylsilane.