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:
May. 26, 1992
Filed:
May. 31, 1991
Applicant:
Inventor:
Robin N Greene, Rockland, 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 ; 528298 ; 528300 ; 528301 ; 528302 ; 528308 ; 5283086 ;
Abstract
A segmented copolyetherester elastomer has soft segments formed from 60-95% poly(ethylene oxide) glycol and 40-45% of a second poly(alkylene oxide)glycol, preferably poly(tetramethylene oxide) glycol, and hard segments formed from terephthalic acid and ethylene glycol or 1,4-butane diol, the hard segments amounting to 8-20% of the elastomer weight. The elastomer can be molded into soft, elastic objects and can absorb water amounting to at least 100% of its dry weight.