Bleaching and washing compositions

Details Bleaching and washing compositions Bleaching and washing compositions

C - Chemistry, Metallurgy

11

D

8/87

C11D 3/39 (2006.01)

Patent

CA 1231805

- 1 - ABSTRACT Bleaching and Washing Compositions It has been suggested hitherto that the bleaching performance of hydrogen peroxide or persalts developing it in situ at ambient to hand hot (e.g. up to 60°C) temperatures can be enhanced by addition of a transition metal catalyst, but recent investigations revealed that when manganese is selected as catalyst its performance can range from nil enhancement to a substantial improvement. The present invention is based upon the recognition that manganese catalysis of hydrogen peroxide is promoted by the presence of at least an equimolar amount of calcium, barium or strontium compound, and preferably a molar ratio of at least 50:1.

474440

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