| 摘要 |
PROBLEM TO BE SOLVED: To provide foaming cleaning composition capable of delivering a high percentage of an active agent and possessing a long contact time on non- horizontal surfaces. SOLUTION: The composition is provided comprising two liquids which are separately maintained prior to forming the admixture during delivery to a surface to be treated, whereupon the admixture generates a sufficient foam for cleaning efficacy and stability. A first liquid preferably includes a hypohalite, or a hypohalite generating agent and second liquid preferably includes a peroxide agent. The first liquid is thickened to a specified rheology, resulting in the generation of a highly effective foam. As the two liquids are initially separated, the hypohalite generating agent can by maintained in an environment free of a peroxide agent and otherwise conductive to their cleaning activity and stability up to the time of use. When the two liquids are allowed to mix, for example, by simultaneously pouring into a drain, the hypohalite and the peroxide react to liberate oxygen gas. As foam generation occurs, the escaping gas contacts the surface of the solution, and creats foam which expands to completely fill the drain pipe. The expanded foam contains an excess of the hypohalite, which acts to clean the drain.
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