Activation of hypochlorite bleaching of dyes

Details Activation of hypochlorite bleaching of dyes Activation of hypochlorite bleaching of dyes

1981-12-23

1983-12-13

Trousof, Natalie

Compositions

Oxidative bleachant, oxidant containing, or generative

Contains activator admixed with inorganic peroxide

25218724, 252 98, 25218136, 25218625, 252102, C11D 3395

Patent

active

044204124

ABSTRACT:
A method of bleaching of certain triarylmethane dyes in aqueous systems with low concentration of hypochlorite ion, activated by the presence of bromide ion and ammonium ions. The method is particularly useful in providing a disappearing color signal in the automatic cleaning and sanitizing of toilet bowls with low concentrations of hypochlorite. Compositions and articles for implementing the practice of the method in the automatic cleaning and sanitizing of toilet bowls are also disclosed.

REFERENCES:
patent: 2320279 (1943-05-01), Kalusdian
patent: 2987435 (1961-06-01), Davies et al.
patent: 3120424 (1964-02-01), Ruedi
patent: 3156521 (1964-11-01), Mills
patent: 3504384 (1970-04-01), Radley et al.
patent: 3547573 (1970-12-01), Tourdot et al.
patent: 3700401 (1972-10-01), Spangler
patent: 4113645 (1978-09-01), Desimone
patent: 4200606 (1980-04-01), Kitko
patent: 4248827 (1981-02-01), Kitko
patent: 4281421 (1981-08-01), Nyquist et al.
Color Index, The Society of Dyes and Colorisity, Third Edition, vol. 4, 1975, CI Nos. 42045, 42053, 42085, 42090 and 42100.

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