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:
May. 11, 1999
Filed:
Jul. 15, 1997
Applicant:
Inventor:
Hussain Al Ghatta, Fiuggi, IT;
Assignee:
Sinco Engineering S.p.A., , IT;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
525437 ; 528296 ; 528486 ;
Abstract
Process for the production of aromatic polyester resins starting from resins with an IV from 0.1 to 0.4 dl/g comprising the steps of blending the resin with a dianhydride of a tetracarboxylic acid, extruding the resin under the form of a strand, cooling the strand or the chips obtainable by cutting the strand, at a temperature between 150.degree. C. and 210.degree. C. and maintaining the same temperature for sufficient time to obtain a crystalline product wherein the DSC curves of the same do not show presence of premelt peaks or only in a negligible amount.