Patent ID: 8262804

Claim:
A phosphate-free detergent formulation for machine dishwashing, comprising, as components: a) from 1 to 20% by weight of a mixture of hydrophobically modified polycarboxylates a1) and hydrophilically modified polycarboxylates a2), comprising a1) from 5 to 95% by weight of hydrophobically modified polycarboxylates I formed from a11) from 20 to 80 mol % of at least one monomer from the group consisting of maleic acid, maleic anhydride and acrylic acid, a12) from ≧0 to 80 mol % of at least one monomer selected from the group consisting of isobutene, diisobutene and styrene, and a13) from ≧0 to 20 mol % of at least one further monomer selected from the group consisting of 1-dodecene, 1-octadecene, C 22 -alpha-olefin, a mixture of C 20 -C 24 -alpha-olefins and polyisobutene having an average of from 12 to 100 carbon atoms, and a2) from 5 to 95% by weight of hydrophilically modified polycarboxylates II formed from a21) from 55 to 90 mol % of acrylic acid and/or of a water-soluble salt of acrylic acid, a22) from 5 to 40 mol % of a further acidic monomer and/or of a water-soluble salt thereof, and a23) from 1 to 15 mol % of at least one nonionic monomer of the general formula (II) in which the variables are each defined as follows: R 5 is hydrogen or methyl, Z is —C(O)O; R 6 are identical or different, unbranched or branched C 2 -C 4 -alkylene radicals; R 7 is unbranched or branched C 1 -C 6 -alkyl; n is from 3 to 50, where the sum of a1) and a2) adds up to 100% by weight, b) from 0 to 50% by weight of complexing agents, c) from 0.1 to 20% by weight of low-foam nonionic surfactants, d) from 0.1 to 30% by weight of bleaches and optionally bleach activators, e) from 0 to 60% by weight of further builders, f) from 0 to 8% by weight of enzymes, and g) from 0 to 50% by weight of one or more further additives, selected from anionic or zwitterionic surfactants, bleach catalysts, alkali carriers, corrosion inhibitors, defoamers, dyes, fragrances, fillers, organic solvents and water, where the sum of components a) to g) adds up to 100% by weight.