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. 14, 2002
Filed:
Sep. 13, 2000
Applicant:
Inventors:
Gabriele Perego, Milan, IT;
Catia Bastioli, Novara, IT;
Gian Domenico Cella, Novara, IT;
Andrea Gardano, Trino, IT;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 2/000 ;
U.S. Cl.
CPC ...
C08F 2/000 ;
Abstract
A method for increasing the molecular weight of aliphatic polyester resins from dicarboxylic aliphatic acids having 2-22 carbon atoms, or from hydroxy-acids having 2-22 carbon atoms, in which the solid resin is brought into contact with a chain extender preferably chosen from the organic disocyaciates.