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:
Dec. 12, 1978
Filed:
Mar. 16, 1977
Applicant:
Inventor:
Yves Bonin, Brignais, FR;
Assignee:
Rhone-Poulenc Industries, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ; C08G / ; C08G / ;
U.S. Cl.
CPC ...
521108 ; 521121 ; 521125 ; 521128 ; 521129 ; 521156 ; 521160 ; 521902 ;
Abstract
Polymers comprising polyoxazolidone and carbodiimide recurring units of the formula: ##STR1## are prepared from polyisocyanates and polyepoxides. Non-friable, low density fire resistant foams are prepared directly from the polymers of the invention without the equisite addition of pore-forming agents.