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. 02, 1982
Filed:
Dec. 29, 1980
Applicant:
Inventors:
Glenn E Fulmer, Clarksville, MD (US);
Conrad Vollmerhausen, Fulton, MD (US);
Assignee:
W. R. Grace & Co., New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
521 65 ; 521 67 ; 521 72 ; 521 99 ; 521114 ; 521116 ; 521137 ; 521159 ; 521160 ; 521905 ;
Abstract
An open cell polyurea polyurethane foamed sponge is produced by mixing together a resin and an aqueous pahse. The resin phase consists of a prepolymer made from a hydrophilic oxyalkylene polyol which is capped with isocyanate groups and from about 1-30% by weight of the prepolymer of a polymeric polysocyanate such as a PAPI resin. The aqueous phase contains water, reinforcing fibers, surfactants, a thickening agent and preferably up to 40% by weight of diatomaceous earth. The resulting foam has a reduced volume swell, rapid wet out and improved wet strength.