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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 5847181 B1

PDFFull Text
Date of Patent:
Dec. 08, 1998

Filed:

Mar. 04, 1997

Preparation of alkylhalosilanes

Applicant:
Inventors:

Tetsuo Nakanishi, Gunma-ken, JP;

Tetsuya Inukai, Gunma-ken, JP;

Kazumasa Tsukioka, Annaka, JP;

Hiroshi Nakayama, Annaka, JP;

Yukinori Satoh, Annaka, JP;

Assignee:

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

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Paul F Shaver

Int. Cl.
CPC ...
C07F / ;
U.S. Cl.
CPC ...
556472 ;
Abstract

An alkylhalosilane is prepared by charging a reactor with a contact mass comprising metallic silicon powder and a copper catalyst and feeding a reactant gas containing an alkyl halide into the reactor whereby the silane is formed by direct synthesis. A phosphorus compound is added to the contact mass in an amount of 3,000-10,000 ppm calculated as phosphorus. The invention produces a more amount of dialkyldihalosilane in a desirable STY while minimizing the amount of unnecessary disilanes.

Find Patent Forward Citations

Nakanishi, Tetsuo. (1998). Preparation of alkylhalosilanes (U.S. Patent No. 5847181). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5847181

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