Polyester composition

Claim 1

A liquid system comprised of: (A) a water/alcohol solvent comprised of from 50 to 80 weight percent water and from 20 to 50 weight percent of at least one alcohol having from 3 to 5 carbon atoms; and (B) a polyester comprised of repeat units which are derived from (a) a diacid component which is comprised of (1) from 20 to 90 mole percent of at least one member selected from the group consisting of dimethylterephthalate and terephthalic acid, (2) from 1 to 6 mole percent of at least one salt of an organic sulfonic acid monomer, and (3) from 4 to 74 mole percent of at least one member selected from the group consisting of alkyl dicarboxylic acids having from 4 to 36 carbon atoms, diesters of alkyl dicarboxylic acids having from 6 to 36 carbon atoms, aryl dicarboxylic acids having from 9 to 20 carbon atoms, diesters of aryl dicarboxylic acids having from 11 to 22 carbon atoms, alkyl substituted aryl dicarboxylic acids having from 9 to 22 carbon atoms, diesters of alkyl substituted aryl dicarboxylic acids having from 11 to 20 carbon atoms, dimethylorthophthalate, dimethylisophthalate, orthophthalic acid, and isophthalic acids; and (b) a diol component which is comprised of (1) from 20 to 100 mole percent ethylene glycol, and (2) from 0 to 80 mole percent of one or more member selected from the group consisting of glycols having from 3 to 12 carbon atoms; wherein said polyester is terminated with carboxyl end groups and wherein said liquid system has a pH of at least 7.