Low perborate to precursor ratio bleach systems

Details Low perborate to precursor ratio bleach systems Low perborate to precursor ratio bleach systems

1988-04-14

1990-05-22

Lechert, Jr., Stephen J.

Compositions

Oxidative bleachant, oxidant containing, or generative

Contains activator admixed with inorganic peroxide

25218638, 25218641, 25218621, 25218623, 25218643, 8111, D06L 302, C11D 339

Patent

active

049275593

ABSTRACT:
A bleaching composition is disclosed comprising a peroxygen bleaching compound, capable of yielding hydrogen peroxide in an aqueous media, and one or more bleach precursors wherein the peroxygen bleaching compound and precursor are present in a molar ratio that ranges from 0.1 to 2. It is also important that bleaching occur in an aqueous media held at a pH from 8.5 to 9.4. A combination of sodium perborate and sodium benzoyloxybenzene sulfonate is the preferred bleaching composition.

REFERENCES:
patent: 2955905 (1960-10-01), Davies et al.
patent: 4412934 (1983-11-01), Chung et al.
patent: 4536314 (1985-08-01), Hardy et al.
patent: 4671891 (1987-06-01), Hartman
patent: 4678594 (1987-07-01), Parfomak et al.
patent: 4735740 (1988-04-01), Zielske
patent: 4769173 (1988-09-01), Cornelissen et al.

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