Automatic Dishwasher Powder Detergent Composition

Author:  F.U. Ahmed, C.E. Buck
Source:  US Patent 5,205,954
Doc ID:  1993036
Year of Publication:  1993
Abstract:  
The application is directed to an automatic dishwasher powder detergent composition with improved antifilming and anti-spotting properties and to a method of using the detergent composition. Ther detergent compostitin comprises silica anti-filming agent, a water soluable polyacrylate antispotting agent, inorganic builder salts, chlorine bleach and bleach stable detergent. The compositions provide reduced filming and spotting on dishware, glassware, china, and the like, particularly in hard water at low temperature. The powder compositions are dry, free flowing and are highly soluble and readily dispersed in the wash bath.