Patent ID: 6334452
Filing Date: 2002-01-01
Classification: C11D

Abstract:
A method for washing a soiled decorative article in a machine dishwasher comprising the steps of:a) contacting the soiled decorative article with a dishwashing detergent composition in tablet form comprising from about 0.1 to about 20% by weight of a cationic surfactant having the formula: wherein R1 is a group comprising from about 6 to about 20 carbon atoms; R2 is a group comprising from about 1 to about 10 carbon atoms; R3 and R4 are each a polyoxyalkene condensate comprising from about 1 to about 25 oxyalkene units; Xâˆ’ is an anion selected from the group consisting of chloride, iodide, bromide, methyl sulfate, ethyl sulfate, and sulfate; from about 0.1% to about 90% by weight of a water soluble phosphate; from about 1% to about 40% by weight of a peroxygen bleach; up to about 10% by weight of an active enzyme; and a buffering system in an effective amount to deliver a pH of about 6 to about 11 in the wash water;b) cleaning the soiled decorative article with the dishwashing detergent composition to produce an unsoiled article; and c) removing the unsoiled article from the dishwashing detergent.