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. 25, 1993
Filed:
Jun. 03, 1991
Applicant:
Inventors:
Daniel J Brunelle, Scotia, NY (US);
Jean E Bradt, Esperance, NY (US);
Assignee:
General Electric Company, Schenectady, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ; C08G / ;
U.S. Cl.
CPC ...
549267 ; 528272 ; 528274 ;
Abstract
Macrocyclic polyester oligomer compositions comprising alkylene isophthalate or terephthalate units or the like are prepared by the reaction of a diol with a diacid chloride in the presence of a catalytic amount of at least one amine characterized by substantially no steric hindrance around the basic nitrogen atom, and an acid accepting amount of at least one other tertiary amine such as triethylamine. The reaction is conducted under substantially anhydrous conditions.
Quick Actions:
Brunelle, Daniel. (1993). Method for preparation of macrocyclic poly(alkylene dicarboxylate) (U.S. Patent No. 5214158). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5214158
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile