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:
Oct. 02, 2001
Filed:
Feb. 15, 2000
Applicant:
Inventors:
Hans R. Kricheldorf, Hamburg, DE;
Ingrid Kreiser-Saunders, Bremen, DE;
Dirk-Olaf Damrau, Leverlcusen, DE;
Assignee:
Ferring GmbH, Kiel, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 6/308 ; C08K 3/10 ;
U.S. Cl.
CPC ...
C08G 6/308 ; C08K 3/10 ;
Abstract
Copolyesters are prepared using cyclic esters or carbonates as monomers and a metallic salt of the formula Me,X,as catalyst. Me,represents Ca, Fe(II), Mg, Mn(II) or Zn, and X is an anion of an aminocarboxylic acid, hydroxycarboxylic acid or a halide. Monomer and catalyst are used in a monomer/catalyst ratio of greater than 100.