| abstract |
A polymer comprising poly(alkylene-co-dianhydrosugar ester) dicarboxylate and its preparation by reacting an alkylene diol, terephthalic acid, and a moiety of formula 1wherein:A is the ester residue from an anhydrosugar alcohol or dianhydrosugar alcohol,I is the ester residue from a diacid or its dialkyl esters,X is H when linked to an A residue, OH when linked to an I residue derived from a dibasic acid, and OR when linked to an I residue derived from a dialkyl ester of the dibasic acid,R is a C1-C4 straight or branched chain alkyl group,a and b are independently 0 or 1, andn is 1 to 10is disclosed. |