Patent ID: 6617297
Filing Date: 2003-09-09
Classification: C11D

Abstract:
A solid automatic dishwasher detergent tablet comprising a chlorine source in an amount sufficient to provide 0.5 to 5 percent available chlorine; and between about 0.5 to about 10 percent by weight of a nonionic surfactant having the structure:Râ€”(AO1)x(AO2)yâ€”ORâ€²whereinR is a C6-C18 alkyl group, AO1 represents propylene oxide or a mixture of propylene oxide and other alkylene oxides, AO2 represents ethylene oxide or a mixture of ethylene oxide and other alkylene oxides, Râ€² is an alkyl or arylalkyl group with 1 to about 10 carbon atoms, x is 2-20, y is 0-20, and the sum of x plus y is 5 or greater, wherein y is non-zero and wherein the chlorine stability of the tablet is such that greater than 80 percent of the chlorine in the table remains active for eight weeks when the tablet is stored at 120Â° F.