Heavy metal adjuncts, their preparation and use

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

B - Operations, Transporting

01

J

252/51.B, 134/5.

B01J 27/00 (2006.01) C11D 3/39 (2006.01)

Patent

CA 1234381

A B S T R A C T A stable heavy metal adjunct, particularly man- ganese adjunct, for use as a peroxygen bleach catalyst is disclosed which comprises a matrix of a heavy metal salt provided with a surface powder coating of dessicant micro- sized powdered material having a mean particle size of less than 25 µm. A process for preparing said adjunct and bleach- ing and detergent compositions containing said adjunct are also disclosed. Preferred heavy metal is manganese and pre- ferred surface powder coating is with microsized silicon dioxide (silica).

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