Patent ID: 8802613
Filing Date: 2014-08-12
Classification: C01B,C11D

Abstract:
1. A cleaning solution comprising: (a) from about 0.5 to about 8 wt %, based on the entire solution, of hydrogen peroxide; (b) from about 0.3 to about 1.5 wt %, based on the amount of hydrogen peroxide, of a first cyclic amino methane diphosphonic acid compound stabilizer; (c) a second phosphonic acid based stabilizer, different from said first cyclic amino methane diphosphonic acid compound, selected from the group consisting of an amino phosphonic acid having three or more phosphonic acid groups in its structure, their salts, and combinations thereof; and (d) a surfactant; wherein the pH of said cleaning solution is at least 7 to about 10.5 and the weight ratio of (b) to (c) is in the range from about 10:1 to about 500:1.