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:
Apr. 26, 1983
Filed:
Jan. 19, 1982
Applicant:
Inventors:
Glenn E Fulmer, Clarksville, MD (US);
Louis L Wood, Rockville, MD (US);
Assignee:
W. R. Grace & Co., New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
428288 ; 428290 ; 428360 ; 428361 ; 4284231 ; 4284237 ; 528 52 ; 528 57 ; 528 59 ; 528 60 ; 528 76 ; 528 77 ;
Abstract
A prepolymer having a molecular weight of at least 3,000 is made from a polyether polyol where all the OH groups are capped with an aliphatic polyisocyanate. When mixed with water the prepolymer reacts to form an elastomeric cross-linked polyurethane gel adhesive which can be used to adhere fibers to from a nonwoven fabric. Examples of the aliphatic diisocyanate are IPDI (isophorone diisocyanate) and hydrogenated MDI. A catalyst can also be applied to the aqueous mixture to accelerate the adhesive binder formation.