Patent ID: 7683206

Claim:
A process for producing of a silicone compound represented by the following formulas (a) and/or (a′), comprising reacting a carboxylic acid represented by the following formula (a2) to an epoxy silane represented by the following formula (a1) and obtaining a metal salt of the carboxylic acid represented by the general formula (a2), wherein the reaction is carried out in presence of 0.8 wt % or more water in said reaction system, wherein A denotes a siloxanyl group, R 1 denotes a substituent with 1 to 20 carbons having a polymerizable group, R 2 to R 4 respectively and independently denote hydrogen, a substituted or unsubstituted substituent with 1 to 20 carbons, or —X-A, and X denotes a substituted or unsubstituted divalent substituent with 1 to 20 carbons.