Copolymers comprising carboxylic acid groups, sulfo groups and polyalkylene oxide groups as a scale-inhibiting additive to washing and cleaning products

The invention relates to copolymers which comprise, in copolymerized form, a1) 30 to 90% by weight of at least one monoethylenically unsaturated C3-C8-carboxylic acid or of an anhydride or water-soluble salt thereof, a2) 3 to 60% by weight of at least one monomer comprising sulfo groups, a3) 3 to 60...

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Hauptverfasser: Urtel Bolette, Heintz Ewald, Bastigkeit Thorsten, Gädt Torben, Eiting Thomas, Weber Heike, Detering Jürgen, Ettl Roland, Sendor-Müller Dorota
Format: Patent
Sprache:eng
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Zusammenfassung:The invention relates to copolymers which comprise, in copolymerized form, a1) 30 to 90% by weight of at least one monoethylenically unsaturated C3-C8-carboxylic acid or of an anhydride or water-soluble salt thereof, a2) 3 to 60% by weight of at least one monomer comprising sulfo groups, a3) 3 to 60% by weight of at least one nonionic monomer of the formula (I) H2C C(R1)COO-[R2-O]o-R3   (I)  in which R1 is hydrogen or methyl, R2 are identical or different, linear or branched C2-C6-alkylene radicals which may be arranged in blocks or randomly, and R3 is hydrogen or a straight-chain or branched C1-C4-alkyl radical and o is a natural number from 3 to 50, a4) 0 to 30% by weight of one or more further ethylenically unsaturated monomers which are polymerizable with a1), a2) and a3), where the sum of a1), a2), a3) and a4) adds up to 100% by weight.