Polyesters comprising structural units with sulfonate groups, and polyalkoxy ether end groups, detergents, and cleaning agents comprising these and their use

Abstract

Disclosed are polyesters containing structural units corresponding to formula (I) or to formula (II) or to formulae (I) and (II), structural units of formula (III) or of formula (IV) or of formulae (III) and (IV), and optionally structural units of the formula (V)—CO—R—CO—O—CH—O—  (I),—CO—R—CO—O—(CH—O)—  (II),—CO—R—CO—O—CH—O—  (III),—CO—R—CO—O—(CH—O)—  (IV),—CO—R—CO—O—R—O—  (V),as well as nonionic endgroups of the formula (VI), and optionally nonionic endgroups of the formula (VII)—CO—(O—CH—)—OR  (VI),—CO—OR  (VII). In these structural units and endgroups Rto Rare selected organic radicals and n is a number between 30 and 500. The polyesters according to the invention are characterized by very good soil release properties, can be readily stored in detergent and cleaning agent formulations and can be used as soil-release polymers.