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. 30, 1993
Filed:
Jan. 15, 1991
Applicant:
Inventors:
Eric W Liimatta, Baton Rouge, LA (US);
Yuan-Fu Yu, Baton Rouge, LA (US);
Assignee:
Ethyl Corporation, Richmond, VA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ; C04B / ;
U.S. Cl.
CPC ...
25238931 ; 25240031 ; 501 88 ; 501 92 ; 501 95 ; 501 96 ;
Abstract
A crosslinkable preceramic composition suitable for use as an infiltrant for porous ceramics, such as fiber-reinforced ceramic composites, comprises about 75-99% by weight of a low molecular weight polysilazane and about 1-25% by weight of an unsaturated organic or organosilicon compound containing at least two alkenyl groups, preferably methylvinylcyclosilazane. Infiltration of composites with the infiltrant can be accomplished by melt or solution infiltration, and the subsequent pyrolysis of the infiltrant results in the formation of a densified ceramic article having improved strength.