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. 01, 2002
Filed:
Jan. 30, 2001
Applicant:
Inventors:
Ashutosh Anant Kelkar, Maharashtra, IN;
Shrikant Madhukar Kulkarni, Maharashtra, IN;
Raghunath Vitthal Chaudhari, Maharashtra, IN;
Assignee:
Council of Scientific & Industrial Research, New Delhi, IN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 1/840 ; C08K 5/49 ;
U.S. Cl.
CPC ...
C08G 1/840 ; C08K 5/49 ;
Abstract
Polyesters may be prepared by reacting an amyl diiodide, an aliphatic or aryl diol and carbon monoxide in presence of a catalyst and an organic base. The process is preferentially carried out in a solvent. The catalyst is a heterogeneous catalyst containing a metal selected from a group containing Palladium, Platinum, Nickel and Cobalt. Following the formation of polyester, the catalyst can be easily separated and efficiently recycled.