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:
Jun. 15, 1993
Filed:
Jan. 31, 1992
Applicant:
Inventors:
Michael J Hennessy, Vineland, NJ (US);
Gordon W Selling, Waynesboro, VA (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08K / ; C07C / ; C07D / ;
U.S. Cl.
CPC ...
524191 ; 524 27 ; 528 62 ; 5482626 ; 5482648 ; 564 34 ; 564 37 ;
Abstract
Mixtures comprising semicarbazide/urethane reaction products of 4-amino-1,2,4-triazole, an aliphatic polyisocyanate and a reduced sugar or glycerol are particularly suited for protecting films, fibers, spandex and other polyurethane articles against discoloration due to exposure to fumes, light and heat.