Water dissipatable polyesters

Claim 1

A linear, water-dissipatable polyester of (1) at least one dicarboxylic acid, (2) at least one glycol, at least 85 mole percent of which is a polyoxyethylene glycol having a molecular weight of about 100 to about 1000, and (3) from 8 to 20 mole percent of a disulfonamido compound having the structural formula: ##STR9## wherein (a) R is selected from the group consisting of --H, an alkali metal, a divalent metal, and a nitrogen based cation, (b) X and Y are the same or different radicals selected from the group consisting of divalent and trivalent arylene radicals of 6 to 12 carbons and divalent and trivalent alkarylene radicals of 7 to about 18 carbons, said radicals being unsubstituted or substituted with chlorine atoms, and (c) A, B, C and D are the same or different and are selected from the group consisting of ##STR10## wherein R" is selected from the group consisting of --H, alkyl of from 1 to about 8 carbons and aryl of from 6 to about 14 carbons, R 1 is alkyl of from 1 to about 8 carbons, and either two or three of A, B, C and D are --H, said polyester having an intrinsic viscosity of at least 0.1 as measured in a 60/40 mixture of phenol-tetrachloroethane.

Claim 20

The method for preparing a linear, water-dissipatable polyester containing a disulfonamido compound of the structural formula ##STR13## wherein (a) R is selected from the group consisting of --H, an alkali metal, a divalent metal, and a nitrogen based cation. (b) X and Y are the same or different radicals selected from the group consisting of divalent and trivalent arylene radicals of 6 to 12 carbons and divalent and trivalent alkarylene radicals of 7 to about 18 carbons, said radicals being unsubstituted and substituted with chlorine atoms, and (c) A, B, C and D are the same or different and are selected from the group consisting of ##STR14## wherein R" is selected from the group consisting of --H, alkyl of from 1 to about 8 and aryl of from 6 to about 14 carbons, R 1 is alkyl of from 1 to about 8 carbons, and either two or three of A, B, C and D are --H, which comprises forming said polyester containing a disulfonamido compound of the structural formula ##STR15## wherein (a) R is an alkali metal and X, Y, A, B, C and D are the same as described above, and subsequently replacing said alkali metal cation with a nitrogen based cation by subjecting said disulfonamido compound to the action of an ion exchange resin, molecular filtration or ultrafiltration.

Claim 21

The method for preparing a linear, water-dissipatable polyester containing a disulfonamido compound of the structural formula ##STR13## wherein (a) R is selected from the group consisting of --H, an alkali metal, a divalent metal, and a nitrogen based cation. (b) X and Y are the same or different radicals selected from the group consisting of divalent and trivalent arylene radicals of 6 to 12 carbons and divalent and trivalent alkarylene radicals of 7 to about 18 carbons, said radicals being unsubstituted and substituted with chlorine atoms, and (c) A, B, C and D are the same or different and are selected from the group consisting of ##STR14## wherein R" is selected from the group consisting of --H, alkyl of from 1 to about 8 and aryl of from 6 to about 14 carbons, R 1 is alkyl of from 1 to about 8 carbons, and either two or three of A, B, C and D are --H, which comprises forming said polyester containing a disulfonamido compound of the structural formula ##STR15## wherein (a) R is an alkali metal and X, Y, A, B, C and D are the same as described above, and subsequently replacing said alkali metal cation with a nitrogen based cation by subjecting said disulfonamido compound to the action of an ion exchange resin, molecular filtration or ultrafiltration.