Aqueous liquid automatic dishwasher detergent composition containing dual bleach system

Claim 1

A dual bleach aqueous liquid automatic dishwasher composition comprising approximately by weight: a. 8-40% inorganic detergent builder; b. 2.5-40% alkali metal silicate; c. 0 to 30% alkali metal carbonate; d. 0.1 to 5% chlorine bleach stable, water-soluble dispersible inorganic detergent active material; e. 0 to 5% chlorine bleach stable foam depressant; f. a chlorine bleach compound capable of forming a hypochlorite ion upon contact with water, said chlorine bleach compound being present in an amount sufficient to provide about 0.5 to 5% of available chlorine; g. a sufficient amount of a water soluble or sparingly water soluble bromide compound selected from the group consisting of a quaternary ammonium bromide compound and a quaternary phosphonium bromide compound, said bromide compound being encapsulated within a water insoluble protective coating having a melting point between 38° C. and 60° C. to provide a mole ratio of available bromide to available chlorine of 0.04 to 1.04%, said quaternary ammonium bromide compound being characterized by the formula: ##STR6## wherein R 1 is a C 12 to C 22 alkyl group, R 2 is a C 11 to C 22 alkyl group, R 3 is a C 1 to C 4 alkyl group and R 4 is a C 1 to C 4 alkyl group and said quaternary phosphonium bromide compound being characterized by the formula: ##STR7## wherein R 1 is a C 12 to C 22 alkyl group or a phenyl group, R 2 is a C 1 to C 22 alkyl group or phenyl group, R 3 is a C 1 to C 4 alkyl group or phenyl group and R 4 is a C 1 to C 4 alkyl group; (h) 0 to 12% sodium hydroxide; and (i) balance being water, said water being present in a sufficient amount that the apparent viscosity of said composition at room temperature measured in a Brookfield viscosimeter HATD, using a number 4 spindle at 20 rpms is less than about 20,000 cps.