Activation

Details Activation Activation

1986-01-16

1986-12-23

Clingman, A. Lionel

Compositions

Electrolytes for electrical devices

252 99, 252133, 252135, 25217425, 25218638, 25218343, 8111, C11D 720

Patent

active

046311416

ABSTRACT:
The bleaching performance of hydrogen peroxide or persalts developing it in situ is markedly lower at lower washing temperatures from ambient to 60.degree. C. than at hot washing temperatures of around 90.degree. C. or above.
The present invention relates to compositions and processes employing a minor amount of mixed oxides of calcium, barium or strontium with manganese which activate hydrogen peroxide bleaching and washing of stains at lower wash temperatures in spite of the fact that the compounds are substantially water-insoluble.
Suitable mixed oxides include those represented by formula M.sub.x MnO.sub.y in which M represents the alkaline earth metal, x ranges from 1 to 2 and y ranges from 3 to 4.

REFERENCES:
patent: 4086175 (1978-04-01), Kravetz et al.
patent: 4488980 (1984-12-01), Oakes
patent: 4490274 (1984-12-01), Maslyaev et al.

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