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:
Aug. 18, 2009
Filed:
Aug. 01, 2007
Takanobu Tsudera, Joetsu, JP;
Tohru Kubota, Joetsu, JP;
Ayumu Kiyomori, Joetsu, JP;
Shin-Etsu Chemical Co., Ltd., Tokyo, JP;
Abstract
A method for producing an isocyanate group-containing siloxane compound is provided. In this method, a halogenated siloxane compound represented by the following general formula (1): or the following general formula (2) wherein R, R, R, and Rare independently hydrogen atom, a monovalent hydrocarbon group containing 1 to 8 carbon atoms, or a siloxy group represented by OSiRRRwherein R, R, and Rare a monovalent hydrocarbon group containing 1 to 8 carbon atoms, X is a halogen atom, n is an integer of 1 to 10, a is 0, 1, or 2, and b is an integer of 2 to 9; is reacted with a cyanate salt represented by the following general formula (3):M(OCN)  (3)wherein M represents an alkali metal or an alkaline earth metal, and m is 1 or 2. The isocyanate group-containing siloxane compound produced is represented by the following general formula (4): or the following general formula (5): wherein R, R, R, R, n, q, and a are as defined above.