Activation of hypochlorite bleaching of dyes

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

1981-12-23

1983-05-24

Tungol, Maria Parrish

Bleaching and dyeing; fluid treatment and chemical modification

Dye concentrate composition wherein an additional amount of...

8462, 8620, 8657, 8658, C09B 6724, C09B 1112, D06P 1673

Patent

active

043848699

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: 3770371 (1973-11-01), Bossard et al.
patent: 4200606 (1980-04-01), Kitko
patent: 4248827 (1981-02-01), Kitko

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