Activation of hypochlorite bleaching of dyes

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

1980-11-05

1982-10-12

Richman, Barry S.

Chemical apparatus and process disinfecting, deodorizing, preser

Process disinfecting, preserving, deodorizing, or sterilizing

Using disinfecting or sterilizing substance

4227, 4228, 4DIG9, 422266, B03D 902, A61L 216

Patent

active

043538665

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: 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: 4200606 (1979-09-01), Kitko
patent: 4248827 (1981-02-01), Kitko

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