Peroxide stabilization

Details Peroxide stabilization Peroxide stabilization

1980-07-18

1981-10-13

Schofer, Joseph L.

Bleaching and dyeing; fluid treatment and chemical modification

Bleaching

Chemical

162 76, 162 78, 252186, 252182, D06C 302, D21C 916

Patent

active

042945755

ABSTRACT:
In aqueous peroxide-containing solutions used in bleaching of cellulose fiber, peroxide stability is very greatly increased by inclusion of alkali metal polyphosphate and alkali metal diethylene triamine penta(methylene phosphonate). Especially useful for addition of such stabilizers to the peroxide-containing solutions to increase such stability are essentially anhydrous compositions containing metal sequestering compounds comprising such polyphosphate and phosphonate in a weight ratio from about 10:1 to about 1:5.

REFERENCES:
patent: 3751372 (1973-08-01), Zecher
patent: 3860391 (1975-01-01), Kling et al.
"Hydrogen Peroxide Bleaching with Dequest.RTM. Phosphonates", Monsanto, Aug. 1978.

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