The invention relates to the field of detergent compositions, in particular detergent compositions for automatic washing, in particular for automatic washing of dishes. Thus, the invention provides a phosphate-free detergent composition comprising at least one non-ionic non-sulfonated surfactant compound and a non-sulfonated water-soluble copolymer prepared in particular by polymerization reaction of acrylic or methacrylic acid, of an ester of 'an acrylic or methacrylic acid, itaconic acid or maleic acid and a compound of formula: The invention also relates to the use of this water-soluble non-sulfonated copolymer as an anti-tartar or anti-drip agent, as well as a cleaning process.
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