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:
Jul. 15, 1986
Filed:
Dec. 16, 1983
Applicant:
Inventors:
Kenneth E Junior, Madison, AL (US);
James D Byrd, Huntsville, AL (US);
James O Hightower, Jr, Huntsville, AL (US);
Assignee:
Thiokol Corporation, Chicago, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08K / ; C08K / ;
U.S. Cl.
CPC ...
523138 ; 523179 ; 524502 ;
Abstract
An elastomeric composition suitable for use as a rocket motor case insulation is disclosed. The composition comprises a vulcanizable elastomeric material and reinforcing polybenzimidazole polymer fibers in combination with a powder filler. A preferred embodiment utilizes polyisoprene as the elastomer and silica as the powder filler. These compositions have better erosion resistance than asbestos-reinforced compositions, and do not pose the environmental or safety risks associated with asbestos-reinforced insulation.