Cellulose interpolymers and method of oxidation

摘要

This invention provides cellulose ester interpolymers, and methods of oxidizing cellulose interpolymers and cellulose ester interpolymers. The invention also provides routes to access carboxylated cellulose ester derivatives with high acid numbers wherein the carboxyl group is attached directly to the cellulose backbone by a carbon-carbon bond. Through functionalization of an intermediate aldehyde, the corresponding cationic or zwitterionic cellulose ester derivatives can also be accessed. The interpolymers of the present invention have a number of end-use applications, for example, as binder resins in various types of coating compositions and as drug delivery agents.

主权项

1. A cellulose ester interpolymer consisting of anhydroglucose units as the non-terminal monomer units of the cellulose ester interpolymer, wherein R1, R2, R3, R4, and R5 are independently selected from the group consisting of C2-C12 acyl groups and formyl; and X is hydroxymethylene; wherein the cellulose ester interpolymer has a degree of substitution of C2-C12 acyl groups from about 1.5 to about 2.5 and a degree of substitution of formyl from about 0.5 to about 1.3.