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. 05, 1993
Filed:
Oct. 09, 1990
Applicant:
Inventors:
Ernst O Dueber, Tervuren, BE;
Louis Muller, Ottenburg, BE;
Assignee:
Imperial Chemical Industries PLC, London, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
521159 ; 521 54 ; 5211091 ; 528 66 ; 528 67 ; 428247 ;
Abstract
The invention provides a process for the manufacture of polymeric foams by reacting at least one isocyanate-containing component and water, in which process the isocyanate-containing component comprises a dispersion of a solid fire retardant additive in a liquid isocyanate prepolymer having a free NCO content between 2 and 15% by weight. The invention also provides new fire retardant compositions comprising a dispersion of a solid fire retardant in liquid isocyanate-containing prepolymer compositions based on a diphenylmethane diisocyanate component and a polyol component.