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:
Feb. 04, 1992
Filed:
Jul. 02, 1991
Applicant:
Inventors:
Ralph Franklin, Danbury, CT (US);
William J Parr, Hopwell Junction, NY (US);
Gerald Fesman, Teaneck, NJ (US);
Barry Jacobs, Matthews, NC (US);
Assignee:
Akzo NV, Arnhem, NL;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08J / ;
U.S. Cl.
CPC ...
521129 ; 521 94 ; 521 97 ; 521130 ; 521138 ; 521178 ; 521181 ; 521182 ;
Abstract
A method of using blowing agent compositions to produce foamed plastics such as polyurethanes, polyesters and the like, wherein a major auxiliary source of blowing agent for the foam is the decomposition of dialkyl dicarbonates. The dialkyl dicarbonates can be decomposed over temperatures ranging from about 10.degree. C. to about 45.degree. C. when used in combination with particular tertiary amine decomposition catalysts.