Stain-Removing Bleach Catalysts from Unilever HPC
Patent No. US 6,677,288 B2: Unilever HPC patented a stain-removing bleach catalyst with an organic substance that forms a complex with a transition metal. This complex is a catalyzing bleach derived from a precursor substrate selected from atmospheric oxygen, a peroxyl species and a peroxyl species precursor.
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