| abstract |
A process for the activation of peroxide-based bleaches comprises conjointly incorporating into an aqueous medium a peroxide-based bleach, a buffering agent to maintain the aqueous medium at a pH above 7.5, and cyanamide, which has been found to be a highly effective peroxide activator when employed under alkaline conditions. Stable concentrated liquid and solid cyanamide-activated bleaching compositions are also disclosed. |