Patent ID: 6660707
Filing Date: 2003-12-09
Classification: C11D

Abstract:
An extruded or cast solid detergent composition comprising:a solidified mixture comprising: bleaching agent, enzyme, or bleaching agent and enzyme; an alkali metal silicate having a M2O:SiO2 ratio of about 1:1 to 1:5; about 10 to 80 wt-% of Na2CO3; an effective amount of an organic phosphonate hardness sequestering agent comprising a potassium salt; about 5 to 20 wt-% anhydrous sodium carbonate; a binding agent comprising sufficient amounts of hydrated sodium carbonate and phosphonate comprising a potassium salt, to form the composition; and no second source of alkalinity or less than a solidification interfering amount of a second source of alkalinity; wherein the mixture hardens to a solid form within about1 minute to about 20 minutes and the composition provides metal protection.