The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 10, 2002
Filed:
Nov. 28, 2001
Keiji Wakita, Chiba Prefecture, JP;
Akihiko Shirahata, Chiba Prefecture, JP;
Dow Corning Toray Silicone Co., Ltd., Tokyo, JP;
Abstract
A method of preparing an organosilicon compound containing an acryloxy-functional group or a methacryloxy-functional group represented by general formula CH ═CR —COO—R —Si(OR ) R , where R , R , R , R are as described below, comprising reacting (a) an alkali-metal salt of acrylic acid or an alkali-metal salt of methacrylic acid described by general formula CH ═CR COOM , where R is a methyl group or a hydrogen atom and M is an alkali metal and (b) an organosilicon containing a halogen-substituted organic group described by general formula XR Si(OR ) R , where X is a halogen atom, R is an alkylenoxyalkylene group or an alkylene group comprising 1 to 6 carbon atoms, R3 is an alkyl group comprising 1 to 6 carbon atoms or an alkoxyalkyl group comprising 2 to 4 carbon atoms, R 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]undec-7-ene, 1,4-diazabicyclo[2.2.2]octane, and 1,5-diazabicyclo[4.3.0]-non-5-ene.