Hydrophilic cotelomers having a terminal sulfonate group and containing acid and amine functions, and their application in detergent compositions

Abstract

Hydrophilic cotelomers having a terminal sulphonate group, and having the formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each independently H or C.sub.1-4 alkyl; M is H or an alkali metal; M' is an alkali metal; 8.ltoreq.a.ltoreq.40 and 1.ltoreq.b.ltoreq.20. These cotelomers may also contain one or more of the following structural units, A; ##STR2## wherein R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are each independently H or C.sub.1-4 alkyl; R.sub.7 is C.sub.1-8 alkyl; R.sub.8 and R.sub.9 are each independently H or C.sub.1-2 alkyl; Y is aryl; M is H or an alkali metal; Z is M or C.sub.1-8 alkyl; 0.ltoreq.c.ltoreq.2; 0.ltoreq.d.ltoreq.3; 0.ltoreq.e.ltoreq.2; and 0.ltoreq.f.ltoreq.10. Detergent powders containing from 10 to 50% by weight of these hydrophilic cotelomers instead of sodium tripolyphosphate have good detergent and anti-redeposition powers.

Dependencies are inferred from the claim text.