Patent ID: 6660702
Filing Date: 2003-12-09
Classification: C11D

Abstract:
A composition for cleaning, comprising:(a) a thickened first aqueous liquid comprising an oxidant and a binary thickening system, characterized in that the first liquid has a viscosity of 150-2000 cP, a static shear modulus of 0.5-5 Pa, a relaxation time of 3-30 sec and a relative elasticity of 3-50 sec/Pa; and (b) a second aqueous liquid comprising a gas-generating agent, characterized in that the second liquid has a viscosity of 0-50 cP; wherein the oxidant comprises a hypohalous bleach generator, the binary thickening system comprises a first surfactant and an anionic counterion present in a weight ratio of from about 3:1 to 1:1, and wherein the first and second aqueous liquids are separately maintained prior to forming an admixture during delivery to a surface to be treated, whereupon the admixture generates a foam of sufficient stability for cleaning efficacy.