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:
Oct. 28, 1980
Filed:
Oct. 10, 1978
Applicant:
Inventors:
Robert M Murch, Brinklow, MD (US);
Phyllis I Meyer, Madison, WI (US);
John J Eagan, Ellicott City, MD (US);
Assignee:
W. R. Grace & Co., New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
521106 ; 521107 ; 521108 ; 521109 ; 521117 ; 521118 ; 521123 ;
Abstract
Improved hydrophilic crosslinked polyurethane foams are prepared by reacting (a) an isocyanate-capped polyoxyethylene prepolymer with (b) at least 20 moles of water per mole of NCO groups in the presence of (c) alumina hydrate, (d) a phosphorus fire-retardant additive and (e) an organic carbon compound which serves to react with phosphate anions at high temperatures (e.g., in the presence of a flame) and reinforces the char provided by combustion of the foam.