Bleaching and brightening composition and method

Abstract From the Canadian patent

Liquid bleaching and brightening compositions are provided in which a polymeric matrix stably suspends a fluorescent whitening agent, and, optionally pigment, particles. A particularly preferred composition includes an aqueous solution having sodium hypochlorite in an amount of from about 3.5 wt.% to about 6.2 wt.% an, anionic or nonionic surfactant in an amount of from about 0.03 wt.% to about 0.3 wt.%, a polymer in an amount of from about 0.3 wt.% to about 2.0 wt.%, a fluorescent whitening agent in an amount of from about 0.01 wt.% to about 0.2 wt.%, and, if desired, ultramarine blue particles in an amount of from about 0.01 wt.% to 0.2 wt.% the, fluorescent whitening agent and …