Patent ID: 6448427
Filing Date: 2002-09-10
Classification: C07F

Abstract:
A method of preparing an organosilicon compound containing a methacryloxy-functional group described by general formulaCH2&boxH;CR1â€”COOâ€”R2â€”Si(OR3)nR43âˆ’n where R1, R2, R3, R4 are as described below, comprising reacting(a) an alkali-metal salt of a methacrylic acid described by general formula CH2&boxH;CR1COOM1, where R1 is a methyl group or a hydrogen atom and M1 is an alkali metal and(b) an organosilicon containing a halogen-substituted organic group described by general formula XR2Si(OR3)nR43âˆ’n, where X is a halogen atom, R2 is an alkylenoxyalkylene group or an alkylene group comprising 1 to 6 carbon atoms, R3 is an alkyl group or an alkoxyalkyl group comprising 2 to 4 carbon atoms, R4 is a monovalent hydrocarbon group, and n is an integer of 1 to 3; in the presence of(c) a tertiary amine having a cyclic structure selected from the group consisting of 1,8-diazabicyclo[5.4.0]undeca-7-en, 1,4-diazabicyclo[2.2.2]octane, and 1,5-diazabicyclo[4.3.0]-nona-5-en; and wherein the alkali-metal salt of a methacrylic acid of component (a) and the tertiary amine of component (c) having a cyclic structure are added in a mole ratio (a) to (c) of 1:0.001 to 1:0.0 1; orwherein the alkali-metal salt of a methacrylic acid of component (a) and the tertiary amine of component (c) having a cyclic structure are added in a mole ratio (a) to (c) of 1:0.0001 to 1:0.05.