Soil-release polymers having a grey-inhibiting effect and having high stability in solution

摘要

The invention relates to polyesters, obtainable by means of polymerization of the components including (a) one or more sulfo group-free aromatic dicarboxylic acids and/or salts thereof and/or anhydrides thereof and/or esters thereof, b) optionally one or more sulfo group-containing dicarboxylic acids, salts thereof and/or anhydrides thereof and/or esters thereof, c) 1,2-propylene glycol, d) ethylene glycol, e) one or more compounds of the formula (1) R1O(CHR2CHR3O)nH (1), where R1 is a linear or branched, saturated or unsaturated alkyl group having from 1 to 22 C atoms, R2 and R3, independently of one another, are hydrogen or an alkyl group having from 1 to 4 carbon atoms, and N is an integer of from 1 to 50, f) optionally one or more compounds of the formula (2) H—(OCH2CH2)m—SO3X (2), in which m is an integer from 1 to 10 and X is hydrogen or an alkali metal ion, and g); optionally one or more crosslinking polyfunctional compounds, provided that at least one of the components b) or f) is present, and provided further that the molar ratio of the components c) 1,2-propylene glycol to d) ethylene glycol is greater than or equal to 1.70.

主权项

1. A polyester prepared by polymerizing components
a) at least one sulfo-free aromatic dicarboxylic acid, salt thereof, anhydride thereof, and/or ester thereof, b) optionally at least one sulfo-containing dicarboxylic acid, salt thereof, anhydride thereof, and/or ester thereof, c) 1,2-propylene glycol, d) ethylene glycol, e) at least one compound of the formula (1)
R1O(CHR2CHR3O)nH  (1) wherein
R1 is a linear or branched, saturated or unsaturated alkyl group having 1 to 22 carbon atoms,R2 and R3 are each independently hydrogen or an alkyl group having 1 to 4 carbon atoms, andn is a number from 1 to 50, f) optionally at least one compound of the formula (2)
H—(OCH2CH2)m—SO3X  (2) wherein
m is a number from 1 to 10 andX is hydrogen or an alkali metal ion, and g) optionally at least one crosslinking polyfunctional compound, with the proviso that at least one of components b) or f) is present, and with the further proviso that the molar ratio of components c) 1,2-propylene glycol to d) ethylene glycol is greater than or equal to 1.70.