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:
Jun. 17, 1997
Filed:
Feb. 09, 1995
Applicant:
Inventors:
Jochen Kalbe, Essen, DE;
Hanns-Peter Muller, Odenthal, DE;
Rainhard Koch, Koln, DE;
Jurgen Engelhardt, Bomlitz, DE;
Wolfgang Koch, Bomlitz, DE;
Klaus Szablikowski, Walsrode, DE;
Gunter Weber, Fallingbostel, DE;
Assignee:
Wolff Walsrode Aktiengesellschaft, Walsrode, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08B / ; C07H / ; C07H / ;
U.S. Cl.
CPC ...
536 185 ; 536 56 ; 536 84 ; 536102 ; 536111 ; 5361231 ; 53612312 ; 536124 ; 536126 ; 525 542 ; 428413 ; 428480 ;
Abstract
The present invention relates to novel thermoplastic, biodegradable polysaccharide ether esters, such as for example cellulose ether esters or starch ether esters, and to the production of such graft copolymers from polysaccharides, epoxides and dicarboxylic acid anhydrides and to the use thereof, for example as moldings, films or coatings.