Avtex Fibers Inc.

John A Price

Hugo Stange

Thomas F Skaar

Copolyester resins comprising the condensation polymerization product of (a) an aromatic dicarboxylic acid or its lower dialkyl ester (b) an aliphatic glycol and a minor amount of a substituted aromatic acid ester represented by the formula: ##STR1## where R is a lower alkyl radical having 1 to 4 carbon atoms and M is an alkali metal from the group consisting of sodium, potassium, and lithium.

Cationic dyeable copolyesters

An alkali-metal salt of an alkoxysulfonated benzoic acid glycol ester is prepared by reacting a meta- or para-hydroxy substituted benzoic acid with an alkali-metal alkoxide and a solvent reactant consisting essentially of an alkylene glycol, and then reacting the formed glycol ester with an alkane sultone.

Growing community of inventors

Swarthmore, PA, United States of America

John A Price