- COPOLYMERS CONTAINING CARBOXYLIC ACID GROUPS SULFONIC ACID GROUPS AND POLYALKYLENE OXIDE GROUPS USED AS SCALE-INHIBITING ADDITIVES TO DETERGENTS AND CLEANING AGENTS

摘要

The present invention relates to copolymers which are incorporated by copolymerization according to the invention, comprising: a1) at least one of 30 to 90% by weight of monoethylenically unsaturated C ₃ -C ₈ - carboxylic acid, its anhydride or salt thereof, a2) 3 to 60% by weight of at least one monomer containing a sulfonic acid group, a3) from 3 to 60% by weight of one or more nonionic monomers of formula (I) Wherein R ¹ is hydrogen or methyl, R ² is the same or different, linear or branched C ₂ -C ₆ -alkylene residue which may be arranged in blocks or statistically, and R ³ is hydrogen or a linear or branched Branched C ₁ -C ₄ -alkyl residue, x is 0, 1 or 2 and o is a natural number of 3 to 50, a4) from 0 to 30% by weight of one or more further ethylenically unsaturated monomers polymerizable with a1), a2) and a3) The sum of a1), a2), a3) and a4) is 100% by weight.