POLYKONDENSATE AUS BUTANTETRACARBONSAEURE UND POLYHYDROXYVERBINDUNGEN UND IHRE VERWENDUNG IN WASCH- UND REINIGUNGSMITTELN

摘要

Described are polycondensation products obtained by condensing (a) butane-1,2,3,4-tetracarboxylic acid, optionally mixed with hydroxycarboxylic acids or other carboxylic acids, with (b) polyhydroxy compounds selected from the group comprising mono-, oligo- and polysaccharides, reduced mono- and oligosaccharides and their amino derivatives, oxidized mono-, oligo- and polysaccharides, alkyl polyglycosides, polyvinyl alcohols and oligoglycerins with more than 2 glycerin units, or mixtures thereof, plus, optionally, (c) up to 20 mole %, relative to component a, of alkylene glycols, polyalkylene glycols or monohydric C4-C20 alcohols, in the ratio, by weight, of a:b from 50:1 to 0.5:1, the condensation products produced having a K-value of 8 to 100 (determined by the H. Fikent method in a 2 % by wt. aqueous solution at 25 DEG C and pH 7 on the Na salts of the condensation products). The invention also concerns the use of the polycondensation products as additives to low-phosphate or phosphate-free washing or cleaning agents in amounts ranging from 0.1 to 30 % by wt. relative to the agent.