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. 19, 2006
Filed:
Oct. 07, 2005
Bok Ryul Yoo, Seoul, KR;
Joon Soo Han, Kyunggi-do, KR;
Weon Cheol Lim, Seoul, KR;
Mi-kyoung Hong, Gyeonggi-do, KR;
Bok Ryul Yoo, Seoul, KR;
Joon Soo Han, Kyunggi-do, KR;
Weon Cheol Lim, Seoul, KR;
Mi-Kyoung Hong, Gyeonggi-do, KR;
Abstract
This invention relates to (organothiomethyl)chlorosilanes and methods for their preparation by the dehydrohalogenative Si—C coupling reaction of oranothiomethyl halides with Si—H containing chlorosilanes (hydrosilanes), wherein a mixture of oranothiomethyl halide and hydrosilane is heated in the presence of tertiary amine or organic salts (quaternary organoammonium and organophosphonium halides to give (organothiomethyl)chlorosilanes, which is existing a sulfur atom in alkyl chain, (formula: RSCHSiClR) in good yield. wherein Rrepresents a hydrogen atom, halogen, or C–Calkyl; Ris selected from the group consisting of C–Calkyl or an aryl group. Especially, this reaction using organic salt as a catalyst provide better economical matter and yield compared with conventional methods, because only catalytic amount of organic salt is required and the catalyst can be separated from the reaction mixture and recycled easily.