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:
Sep. 16, 1997
Filed:
Mar. 20, 1996
Applicant:
Inventors:
Daniel Joseph Brunelle, Burnt Hills, NY (US);
Ganesh Kailasam, Schenectady, NY (US);
Judith Ann Serth-Guzzo, Slingerlands, NY (US);
Paul Russell Wilson, Albany, NY (US);
Assignee:
General Electric Company, Schenectady, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J / ; C08G / ; C08L / ;
U.S. Cl.
CPC ...
521 48 ; 528481 ; 528485 ; 528491 ; 528501 ; 5285 / ; 528503 ; 562479 ; 562481 ;
Abstract
The invention relates to a novel process for depolymerizing polyesters by subjecting the polyesters to catalysts and organic solvents which are substantially free of oxygen and water in order to produce macrocyclic polyester oligomers substantially free of hydroxybutyl terminated linear impurities.