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. 04, 1990
Filed:
Dec. 12, 1988
Yoshifumi Takeda, Kubikimura, JP;
Minoru Takamizawa, Kubikimura, JP;
Tsutomu Takeno, Kubikimura, JP;
Shin-Etsu Chemical Col, Ltd., Tokyo, JP;
Abstract
A process for manufacturing an organic silazane polymer which comprises: reacting ammonia with a mixture of organosilicic compounds (I) and (II) wherein R is a methyl group, an ethyl group, or a phenyl group, and R.sub.1 is a hydrogen atom or a vinyl group, and X is a chlorine or a bromine atom; then polymerizing the thus obtained silazane compound in the presence of an alkali catalyst. A process for manufacturing a ceramic fiber which comprises melting, spinning, and rendering the organic silazane polymer infusible and then baking the same is also disclosed, as are improved silazane polymers and ceramic articles made therefrom. ##STR1##