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:
Jul. 02, 1991
Filed:
Feb. 09, 1990
Applicant:
Inventors:
Charles W Goodrich, Waynesboro, VA (US);
William L Evans, Turnersville, NJ (US);
Assignee:
E. I. du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08L / ; C08L / ; C08K / ;
U.S. Cl.
CPC ...
524 27 ; 524 56 ; 524 57 ; 524 58 ; 524109 ; 524432 ; 525458 ;
Abstract
An improved spandex polymer composition provides fibers or films of the composition with increased heat set efficiency and greater discoloration resistance. The composition contains zinc oxide and a polyhydroxy additive selected from certain sugars, reduced sugars and/or polyhydroxy urethanes formed from these sugars or reduced sugars and an organic diisocyanate.