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:
May. 31, 1977
Filed:
Sep. 19, 1975
Applicant:
Inventors:
Robert LeRoy Zimmerman, Austin, TX (US);
Thomas Howard Austin, Austin, TX (US);
Assignee:
Texaco Development Corporation, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
260 / ; 260 / ; 260 / ; 260 / ; 260 / ; 260 / ; 2608 / ; 260898 ; 260 / ;
Abstract
New catalysts for isocyanurate foams comprising the potassium salt of a carboxy-terminated butadiene-acrylonitrile copolymer. The novel foams are obtained by the polymerization of an aromatic polyisocyanate, and a polyether or polyester polyol in the presence of a blowing agent and said copolymer useful as an isocyanurate group formation catalyst. The novel foams are useful in preparing rigid, flexible, semirigid or semi-flexible materials such as panels, slabs or sprayed foam surfaces.