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:
Jan. 25, 1994
Filed:
May. 28, 1991
Applicant:
Inventor:
Kavilipalayam M Natarajan, North Brunswick, NJ (US);
Assignees:
Istituto Guido Donegani S.p.A., , IT;
Enichem S.p.A., , IT;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08K / ;
U.S. Cl.
CPC ...
524236 ; 524 99 ; 524240 ; 524600 ;
Abstract
A process for increasing the crystallization rate and crystallization temperature of thermoplastic polyesters by incorporating into the polyesters quaternary ammonium salts in amounts effective to increase the crystallization temperatures of the polyesters at least 15.degree. C., which quaternary ammonium salts are substantially free of metal salts of organic acid functional groups. Molding compositions of thermoplastic polyesters and quaternary ammonium salts present in amounts effective to increase the crystallization temperatures of the polyesters at least 15.degree. C.