Preparation of organosilicon compound having (meth)acryloyloxy group
A (meth)acryloyloxy-containing organosilicon compound (3) is prepared by simultaneously feeding a hydrohalosilane compound (1) and a (meth)acrylate compound (2) in the presence of a polymerization inhibitor to a reaction system, and effecting hydrosilylation reaction in the presence of a platinum catalyst. The content of (meth)acrylate compound (2) is 0-100 mol % based on the content of organosilicon compound (3) in the reaction system. R 1 is a C 1 -C 10 monovalent hydrocarbon group, X is halogen, n is 1, 2 or 3, R 2 is H or methyl, and R 3 is a C 1 -C 18 alkylene group.
1. A method for preparing an organosilicon compound having a (meth)acryloyloxy group, comprising the steps of simultaneously feeding a hydrohalosilane compound and a (meth)acrylate compound having an alkenyl group in the presence of a polymerization inhibitor to a reaction system, and effecting hydrosilylation reaction in the presence of a platinum catalyst to form the organosilicon compound having a (meth)acryloyloxy group,
the hydrohalosilane compound having the general formula (1):
HSiX n R 1 3-n , (1)
wherein R 1 is a substituted or unsubstituted C 1 -C 10 monovalent hydrocarbon group, X is a halogen atom, and n is an integer of 2 or 3,
the (meth)acrylate compound having the general formula (2):
wherein R 2 is hydrogen or methyl and R 3 is an unsubstituted C 1 -C 18 alkylene group,
the organosilicon compound having the general formula (3):
wherein R 1 , R 2 , R 3 , X, and n are as defined above,
the reaction being effected under such conditions that the content of the (meth)acrylate compound having formula (2) accounts for 0 to 100 mol % based on the content of the organosilicon compound having formula (3) in the reaction system.
2. The method of claim 1 wherein the hourly feed rate of the hydrohalosilane compound having formula (1) is 50 to 200 mol % based on the hourly feed rate of the (meth)acrylate compound having formula (2).