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:
Jan. 14, 1992
Filed:
Jul. 20, 1990
Applicant:
Inventors:
Paul V Farkas, Willowdale, CA;
J A Duley, King City, CA;
Assignee:
Woodbridge Foam Corporation, Ontario, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
521133 ;
Abstract
A process for producing a foamed polymer, particularly a polyurea foam, comprises reacting an isocyanate compound and at least one active hydrogen-containing compound in the presence of a heterogeneous blowing agent. The heterogeneous blowing agent is a permanent gas and is used at a temperature and a pressure thereby rendering it in the form of a liquid, solid or deep chilled gas. The exothermicity of the reaction is substantially compensated by the energy absorbing capacity of the heterogeneous blowing agent.