Patent ID: 7557074

Claim:
A phosphate-free detergent formulation for machine dishwashing comprising, as components: a) from 1 to 20% by weight of copolymers of a1) from 30 to 70% by weight of maleic acid or maleic acid anhydride, a2) from 20 to 40% by weight of isobutene, and a3) from 5 to 20% by weight of octadecene, b) from 1 to 50% by weight of a complexing agent selected from the group consisting of nitrilotriacetic acid, hydroxyethylethylenediaminetriacetic acid, ethylenediaminetetraacetic acid, diethylenetriaminepentaacetic acid, methylglycinediacetic acid, glutaminicaciddiacetic acid, iminodisuccinic acid, hydroxyiminodisuccinic acid, ethyleneiminodisuccinic acid, asparaginicaciddiacetic acid and salts thereof, c) from 1 to 15% by weight of low-foaming nonionic surfactants, d) from 0.1 to 39% by weight of bleaches and, optionally, bleach activators, e) from 0 to 60% by weight of builders, f) from 0 to 8% by weight of enzymes, g) from 0 to 50% by weight of one or more additional additives selected from the group consisting of anionic or zwitterionic surfactants, bleach catalysts, alkali carriers, corrosion inhibitors, defoamers, dyes, fragrances, fillers, organic solvents and water, the sum of components a) to g) adding up to 100% by weight.