Patent ID: 8193139

Claim:
A phosphate free detergent formulation, consisting of: a) from 1 to 20% by weight of a copolymer of a1) from 50 to 93 mol % of acrylic acid and/or of a water-soluble salt of acrylic acid, a2) from 5 to 30 mol % of methacrylic acid and/or of a water-soluble salt of methacrylic acid, and a3) from 2 to 20 mol % of at least one nonionic monomer of the formula (I) in which the variables are each defined as follows: R 1 is hydrogen or methyl, R 2 is a chemical bond or unbranched or branched C 1 -C 6 -alkylene, R 3 are identical or different, unbranched or branched C 2 -C 4 -alkylene radicals, R 4 is unbranched or branched C 1 -C 6 -alkyl, n is from 3 to 50, wherein monomers a1) to a3) are copolymerized in a random structure or block structure, b) from 1 to 50% by weight of a complexing agent selected from the group consisting of a glycine-N,N-diacetic acid derivative and glutamic acid N,N-diacetic acid, and salts thereof, c) from 1 to 15% by weight of a low-foaming nonionic surfactant, d) from 0 to 30% by weight of a bleach and, optionally, a bleach activator, e) from 0 to 60% by weight of a builder, f) from 0 to 8% by weight of an enzyme, g) from 0 to 50% by weight of one or more additives, the sum of components a) to g) adding up to 100% by weight; wherein said detergent formulation is phosphate-free and for machine dishwashing.