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:
Oct. 12, 1993
Filed:
Nov. 23, 1992
Applicant:
Inventor:
Johannes van Helmond, Bergen op Zoom, NL;
Assignee:
General Electric Company, Pittsfield, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08K / ; C08L / ; C08L / ;
U.S. Cl.
CPC ...
524409 ; 524412 ; 524417 ; 525 67 ; 525439 ;
Abstract
The invention relates to polymer mixtures which comprise a polyalkylene phthalate and an aromatic polycarbonate and/or a brominated aromatic carbonate oligomer, polymer or copolymer. It has been found that zinc or calcium hydrogen phosphates are good transesterification inhibitors. An important advantage of the said inhibitors is that they do not condense or hardly condense to polyphosphates and that they do not negatively influence the impact strength of the polymer mixture.