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:
Apr. 29, 1980
Filed:
Feb. 01, 1979
Applicant:
Inventors:
Fred L Massey, Uniontown, OH (US);
Trent A Sponseller, Hartville, OH (US);
Assignee:
The Goodyear Tire & Rubber Company, Akron, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
525437 ; 528288 ; 528289 ;
Abstract
The polyesters are endcapped by reacting them generally with substituted benzoyl-lactams or substituted benzoyl-phthalimides at a temperature usually above the melting point of the polyester to form a benzoyl end group. Such endcapped polymers have improved properties such as thermal-oxidative aging, molecular weight retention, tensile strength retention, and improved stability.