Patent ID: 7101833
Filing Date: 2006-09-05
Classification: C11D

Abstract:
1. A domestic, institutional, industrial, and/or commercial method of reducing glassware surface corrosion in an automatic dishwashing appliance comprising the step of contacting a glassware surface with an aqueous wash liquor containing a corrosion protection agent comprising: a) an effective amount of a zinc-containing layered material, said material having a particle size in the range of about 1 nm to about 100 nm and a crystallinity value of from about 0.4 to about 0.8625 FWHM units, at a 200 reflective peak; and b) an adjunct ingredient selected from the group consisting of surfactant, chelating agent/sequestrant blend, bleaching system, enzyme, alkalinity source, water softening agent, secondary solubility modifier, thickener, acid, soil release polymer, thickeners, hydrotrope, binder, carrier medium, antibacterial active, detergent filler, abrasive, suds suppressor, defoamer, anti-redeposition agent, threshold agent or system, aesthetic enhancing agent, oil, solvent, and mixtures thereof, and c) a dispersant polymer selected from the group consisting of polyaspartate, starches, celluloses and alginates, wherein said aqueous wash liquor has a pH of from greater than 9 to about 14.