Patent ID: 9708415
Date: 2017-07-18
CPC Classifications: C08B

Claim:
1. A compound comprising units of an ester of a cellulosic material and a diacid, each unit represented by Formula I wherein for each unit represented by Formula I, R1, R2, and R3 are the same or different, and each of which is selected from —H, —COR′, —R′″, or —COR″COOH, with the proviso that the compound contains at least one type of —COR″COOH, and at least one type of —COR′; further wherein R′ is an alkyl, alkenyl, alkynyl, or aromatic group; R″ is an alkyl, alkenyl, or alkynyl group having 4 or more carbon atoms; R′″ is an alkyl, alkenyl, alkynyl, polyol, or aromatic group, and wherein a degree of substitution is not less than 0.33 for —COR″COOH.