Copolyesters as improved binders and finishes for polyester- containing fabrics

摘要

A process for the production of stable aqueous polymer dispersions which comprises polymerizing about 10-80 percent by weight based on the total amount of non-aqueous matter of olefinically unsaturated monomers under free radical emulsion polymerization conditions in the presence of about 90-20 percent by weight based on the total amount of non-aqueous matter of water- dispersible polyester derived essentially from components (1), (2), (3) and (4) as follows:P P(1) AT LEAST ONE DICARBOXYLIC ACID;PP(2) AT LEAST ONE DIOL, AT LEAST 20 MOLE PERCENT OF SAID DIOL COMPONENT BEING A POLY(ETHYLENE GLYCOL) HAVING THE FORMULA ##EQU1## wherein n is an integer of from 2 to about 10, (3) AT LEAST ONE DIFUNCTIONAL DICARBOXYLIC ACID SULFO-MONOMER CONTAINING A -- SO.sub.3 M group attached to an aromatic nucleus, wherein M is hydrogen or Na.sup.+, Li.sup.+, K.sup.+ or a combination thereof, said sulfo- monomer component constituting at least about 8 mole percent to about 45 mole percent of the sum of the moles of said Components 1, 3 and 4, andPP (4) FROM ABOUT 4 TO ABOUT 8 MOLE PERCENT OF THE SUM OF THE MOLES OF SAID Components 1, 3 and 4 of an &agr;,&bgr;- unsaturated dicarboxylic acid selected from the group consisting of fumaric acid, maleic acid, itaconic acid and p- carboxycinnamic acid; said polymer having an inherent viscosity in the range of from about 0.15 to about 0.5 as measured at 25° C. and a concentration of about 0.5 gram of said polyester per 100 ml. of a solvent composed of 60% phenol and 40% tetrachloroethane.