| abstract |
The invention relates to a phosphate-free cleaning formulation for machine dishwashing comprising as components: a) 1 to 20% by weight of copolymers of a1) 50 to 99.5 mol% of a monoethylenically unsaturated monocarboxylic acid and/or of a salt thereof, a2) 0.5 to mol% of an alkoxylated monoethylenically unsaturated monomer of the formula (I), a3) 0 to 50 mol% of a monoethylenically unsaturated dicarboxylic acid, an anhydride and/or a salt thereof, a4) 0 to 20 mol% of a further copolymerizable monoethylenically unsaturated monomer, where the copolymer has an average molecular weight Mw of from 30 000 to 500 000 g/mol and a K value of from 40 to 150, measured at pH 7 in 1% strength by weight aqueous solution at 25°C, b) 1 to 50% by weight of complexing agents chosen from the group consisting of nitrilotriacetic acid, ethylenediaminetetraacetic acid, diethylenetriaminepentaacetic acid, hydroxyethylethylenediaminetriacetic acid and glycine-N,N-diacetic acid and derivatives thereof, glutamic acid-N,N-diacetic acid, iminodisuccinate, hydroxyiminodisuccinate, S,S-ethylenediaminedisuccinate and aspartic acid-diacetic acid, and the salts of the abovementioned substances, c) 1 to 15% by weight of low-foaming nonionic surfactants, d) 0.1 to 30% by weight of bleaches and optionally bleach activators, e) 0 to 60% by weight of further builders, f) 0 to 8% by weight of enzymes, g) O to 50% by weight of one or more further additives, where the sum of components a) to g) is 100% by weight. |