Patent ID: 8722606

Claim:
An automatic dishwashing detergent composition comprising: (a) from 2-8 wt % of a polymer comprising a hydroxy end group and polymerized residues of C 3 -C 6 carboxylic acid monomers, which comprise: (i) 65-72 weight % acrylic acid, (ii) 15-25 weight % methacrylic acid, and (iii) 8-13 weight % maleic acid, wherein the total of the weight percents of said polymerized residues of monomers (i), (ii) and (iii) is at least 99 weight percent of said polymer, based on the total weight of the polymer, and wherein said polymer (a) comprises no polymerized derivatives of aminoacrylol, alkoxylate or ethoxylate monomers; and (b) at least 5 weight %, and no more than 20 weight % of a biodegradable builder selected from the group consisting of glycine-N,N-diacetic acid, methylglycine-N,N-diacetic acid, glutamic acid-N,N-diacetic acid, salts thereof and combinations thereof; wherein the polymer has less than 5 mole % sulfonic acid monomer and the detergent composition comprises less than 0.5 wt % phosphorus; and wherein the detergent composition comprises at least 6 wt % silicates and no more than 34 wt % total carbonates.