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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.:

US 5162477 B1

PDFFull Text
Date of Patent:
Nov. 10, 1992

Filed:

Dec. 23, 1991

Preparation of polyorganosilanes

Applicant:
Inventors:

Shigeru Mori, Kawasaki, JP;

Eiichi Tabei, Kawasaki, JP;

Akira Hayashida, Higashimurayama, JP;

Yoshinori Hida, Kawasaki, JP;

Motoo Fukushima, Kawasaki, JP;

Assignee:

Shin-Etsu Chemical Co., Ltd., Tokyo, JP;

Attorney:

Birch, Stewart, Kolasch & Birch

Primary Examiner:

Melvyn I Marquis

Assistant Examiner:

M W Glass

Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528 14 ; 528 10 ; 556430 ;
Abstract

Polyorganosilanes are prepared by contact reaction of organodihalosilanes with alkali metal fine particles in an organic solvent. Prior to the contact reaction, a triorganohalosilane is contacted with the dispersion of alkali metal fine particles in organic solvent for removing reactive oxygen and moisture from the dispersion. Formation of a siloxane bond in the polysilane backbone is minimized, and polyorganosilanes having a minimal oxygen content are obtained.

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Mori, Shigeru. (1992). Preparation of polyorganosilanes (U.S. Patent No. 5162477). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5162477

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