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:
Mar. 21, 1995
Filed:
Dec. 10, 1993
Korea Institute of Science and Technology, Seoul, KR;
Abstract
The present invention relates to a process for preparing tris(silyl)methanes by directly reacting a mixture of .alpha.-dichloromethylsilanes represented in formula I and hydrogen chloride or alkyl chlorides represented in formula II, with silicon metal to give the tris(silyl)methanes having two dichlorosily groups (formula III), the tris(silyl)methanes having one trichlorosilyl group and one dichlorosilyl group (formula IV), and the tris(silyl)metranes having two trichlorosilyl groups (formula V) in moderately high yields in the presence of copper catalyst at a temperature from 250.degree. C. to 350.degree. C. ##STR1## Wherein R represents hydrogen, alkyl(C.sub.1 -C.sub.4), or CH.sub.2 CH.sub.2 Cl, and R.sub.1, R.sub.2, and R.sub.3 represent independently hydrogen or chloride.