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:
Dec. 02, 2003
Filed:
Mar. 19, 2002
Applicant:
Inventors:
Gerald Rafier, Potsdam, DE;
Jacqueline Lang, Berlin, DE;
Monika Jobmann, Buxtehude, DE;
Inna Bechthold, Berlin, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 6/382 ; C08K 3/10 ;
U.S. Cl.
CPC ...
C08G 6/382 ; C08K 3/10 ;
Abstract
A process is provided for manufacturing homo- and copolyesters of lactic acid by ring scission polymerization of its cyclic monomers in the presence of an initiator. Polymerization is carried out in the molten phase in the presence of an initiator system containing a compound of tin and at least one additional initiator chosen from the compounds of metal of the fourth subgroup.