Heavy metal adjuncts, their preparation and use

Details Heavy metal adjuncts, their preparation and use Heavy metal adjuncts, their preparation and use

1984-11-05

1986-12-02

Lieberman, Paul

Compositions

Water-softening or purifying or scale-inhibiting agents

252 94, 2521862, 25218625, C11D 1700, C11D 1704, C11D 1706

Patent

active

046263748

ABSTRACT:
A stable heavy metal adjunct, particularly manganese adjunct, for use as a peroxygen bleach catalyst is disclosed which comprises a matrix of a heavy meal salt provided with a surface powder coating of desiccant microsized powdered material having a mean particle size of less than 25 .mu.m.
A process for preparing said adjunct and bleaching and detergent compositions containing said adjunct are also disclosed.
Preferred heavy metal is manganese and preferred surface powder coating is with microsized silicon dioxide (silica).

REFERENCES:
patent: 3156654 (1964-11-01), Konecny et al.
patent: 3398076 (1968-08-01), Das et al.
patent: 3532634 (1970-10-01), Woods
patent: 4208295 (1980-06-01), Sai et al.
patent: 4444674 (1984-04-01), Gray

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