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. 25, 1979
Filed:
May. 01, 1978
Applicant:
Inventors:
Willem F Borman, Evansville, IN (US);
Frank N Liberti, Mount Vernon, IN (US);
Assignee:
General Electric Company, Pittsfield, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ;
U.S. Cl.
CPC ...
260 / ; 260 / ; 260 / ; 260 26 ; 260660 ; 260D / ; 525439 ;
Abstract
The melt viscosity of high molecular weight linear polyesters is stabilized in the presence of aromatic (poly-)carbonates by adding a minor proportion of a non-volatile monofunctional ester-forming compound to a mixture of glycol and terephthalate or isophthalate reactants and heating the resulting mixture. The products of the process are suitable for conversion to compositions with aromatic (poly-)carbonates, especially flame retarded such compositions, where stabilized melt viscosity during fabrication is critical.