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. 28, 1993
Filed:
Jan. 22, 1992
Applicant:
Inventors:
Chih-Chien Hsu, Houston, TX (US);
Gerhard K Guenther, Blacksburg, VA (US);
Richele T Howelton, Austin, TX (US);
David E Bergbreiter, College Station, TX (US);
Alan Letton, Bryan, TX (US);
Pei-Hua Wang, Sugarland, TX (US);
Assignee:
Texaco Chemical Company, White Plains, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ; C08G / ; C08L / ;
U.S. Cl.
CPC ...
528274 ; 528288 ; 528292 ; 528301 ; 528347 ; 525408 ; 525433 ; 525439 ;
Abstract
Disclosed is an alternating block copolymer composition useful for enhancing the crystallization of bisphenol-A polycarbonate which comprises the reaction product of a polyoxyalkylene polyamine and poly(ethylene)terephthalate. Also disclosed is a method of synthesizing the alternating block copolymer and a method of using the block copolymer composition in the crystallization of bisphenol-A polycarbonate.