Activation of aqueous hydrogen peroxide with manganese catalyst

Details Activation of aqueous hydrogen peroxide with manganese catalyst Activation of aqueous hydrogen peroxide with manganese catalyst

1985-02-14

1986-11-04

Willis, Prince E.

Compositions

Electrolytes for electrical devices

8107, 252 94, 252 95, 25218633, 25218638, 25218641, C11D 3395, C11D 339, C11D 718

Patent

active

046209352

ABSTRACT:
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.degree. 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.

REFERENCES:
patent: 969073 (1910-08-01), May
patent: 2245495 (1941-06-01), Pemble
patent: 3210284 (1965-10-01), Duvall
patent: 4430242 (1984-02-01), Bragg
patent: 4481129 (1984-11-01), Oakes

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