Birch, Stewart, Kolasch & Birch, LLP
Washing method and clothes detergent composition
 A washing method is described which has excellent washing power and a low surfactant concentration. The described clothes washing method comprises the use of a phosphorus-free clothes detergent composition comprising (a) one or more surfactants, (b) one or more alkali metal silicates, and (c) one or more metal ion capturing agents other than the alkali metal silicate (b). The above detergent composition is added to water in an amount sufficient to produce a washing liquid having the following washing conditions (1) a pH of not less than 10.60; (2) containing a material having an ion capturing capacity in an amount sufficient for theoretically changing the water hardness of said water to be not more than 0.5.degree. DH; and (3) having a surfactant concentration of from 0.07 to 0.17 g/L. 
Kao Corporation
C C C C C C C C C
C11D C11D C11D C11D C11D C11D C11D C11D C11D
inventional inventional inventional inventional inventional inventional inventional inventional inventional
Masaki Katsuhiko Noriaki Hiroyuki Shu Akiko
Tsumadori Kasai Ushio Yamashita Yamaguchi Ishikura