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. 26, 1990
Filed:
Feb. 28, 1989
Applicant:
Inventor:
Robin N Greene, Wilmington, DE (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528272 ; 528308 ; 5283086 ; 5283087 ; 525437 ;
Abstract
A thermoplastic, segmented, linear copolyetherester elastomer of at least 70 weight percent soft segments, derived from poly(alkylene oxide) glycols and terephthalic acid, and hard segments constituting 10-30% of the elastomer and being 95 to 100% poly(1,3-propylene terephthalate). Melt-spun and drawn fibers of the elastomer have superior elastic and set properties versus comparable fibers made from such elastomers having hard segments of poly(ethylene terephthalate) or of poly(1,4-butylene terephthalate).