Alkaline dishwasher detergent

Claim 1

An automatic dishwashing composition providing optimum cleaning; spotting and filming; and physical characteristics consisting essentially of: (1) from about 20% to about 60% of a detergency builder selected from the group consisting of alkali metal tripolyphosphates, pyrophosphates, orthophosphates, carbonates and mixtures thereof; (2) from about 10% to about 30% alkali metal silicate solids providing from about 5% to about 15% of SiO 2 ; (3) a material selected from the group consisting of sodium and potassium dichloroisocyanurates; dichloroisocyanuric acid; 1,3-dichloro-5,5-dimethylhydantoin; N,N'-dichlorobenzoylene urea; paratoluene sulfodichloroamide; trichloromelamine; N-chloroammeline; N-chlorosuccinimide; N,N'-dichloroazodicarbonamide; N-chloroacetyl urea; N,N'-dichlorobiuret; chlorinated dicyandiamide; sodium hypochlorite; calcium hypochlorite; lithium hypochlorite; chlorinated trisodium phosphate; and mixtures thereof; to provide available chlorine at a level of from about 0.5% to about 3%; (4) from about 1% to about 9.5% of a low foaming nonionic surfactant; selected from the group consisting of (a) the condensation product of 1 mole of a saturated or unsaturated, straight or branched chain alcohol or fatty acid containing from about 10 to about 20 carbon atoms with from about 4 to about 50 moles of ethylene oxide; (b) polyethylene glycols having molecular weights of from about 1,400 to about 30,000; (c) the condensation products of 1 mole of alkyl phenol wherein the alkyl chain contains from about 8 to about 18 carbon atoms and from about 4 to about 50 moles of ethylene oxide; (d) polyoxypropylene, polyoxyethylene condensates having the formula HO(C.sub.2 H.sub.4 O).sub.x (C.sub.3 H.sub.6 O).sub.y (C.sub.2 H.sub.4 O).sub.x H where y equals at least 15 and (C 2 H 4 O) x+x equals 20% to 90% of the total weight of the compound and the molecular weight is from about 2,000 to about 10,000; (e) the compounds of (a) which are capped with propylene oxide, butylene oxide, and/or short chain alcohols, and/or short chain fatty acids; and (f) mixtures thereof; (5) from about 1% to about 30% of a stabilized water-soluble polymer consisting essentially of polyacetal carboxylate segments having the structure ##STR8## wherein M is selected from the group consisting of alkali metal, ammonium tetraalkyl ammonium and alkanol amine groups having from 1 to about 4 carbon atoms in the alkyl and alkanol chains; n averages at least 4; and the total number of polyacetal carboxylate segments are at least 50% by weight of the total polymer; said composition having a pH of from about 9 to 10.9 at 2,500 ppm and being substantially free of materials having a pH of 12 or more at a concentration of 1% in water and other organic chelating builders.