Abstract: The present invention relates to novel thermoplastic materials based on polysaccharide ethers which are simultaneously substituted by carboxylic acid ester groups and carbamate groups, together with mixtures of such derivatives with low molecular weight aliphatic urea derivatives.
Type:
Grant
Filed:
November 1, 1999
Date of Patent:
March 26, 2002
Assignee:
Wolff Wolsrode AG
Inventors:
Joachim Simon, Hanns-Peter Müller, Dirk Jacques Dijkstra, Gunter Weber