Patent ID: 6425959
Filing Date: 2002-07-30
Classification: C11D

Abstract:
A method of removing a complex soil from a hard surface, the method comprising:(a) contacting the hard surface and the complex soil with a cleaner composition consisting essentially of: (i) about 0.003 to 35 wt % of one or more nonionic surfactant; (ii) about 0.0005 to 35 wt % of one or more silicone surfactant, the weight ratio of the nonionic surfactant to the silicone surfactant is such that there are about 1 to about 10 parts by weight of the nonionic surfactant per each part of the silicone surfactant; and (iii) about 0.001 to 20 wt % of a hydrotrope, selected from the group consisting of a C1-5 substituted benzene sulfonic acid compound, a naphthalene sulfonic acid compound, a xylene sulfonic acid compound, a xylene sulfonic acid compound, a toluene sulfonic acid compound, a C6-24 alkyl-dimethyl amine oxide, an alkylated diphenyl oxide disulfonate or salts thereof and mixtures thereof, in an amount sufficient to maintain the composition as a uniform solution wherein the nonionic surfactant, the silicone surfactant and the hydrotrope are selected in proportions that when contacted with an aqueous medium to make an aqueous dilution of the cleaner composition the aqueous dilution is cloudy and indefinitely stable; (b) forming removed complex soil wherein the complex soil comprises an inorganic solid phase dispersed in an organic phase; and (c) removing the composition and removed soil.