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:
Mar. 01, 1977
Filed:
May. 23, 1975
Applicant:
Inventor:
Chi-Kai Shih, Wilmington, DE (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
260873 ; 264 95 ;
Abstract
Copolyesters blended with ethylene/carboxylic acid copolymer in which at least 10% of the acid groups are neutralized have increased melt strength, and are more readily processable by blow molding and extrusion film blowing techniques. The blends contain from 0.2 to 20% by weight of the ethylene/acid copolymer.