Coated sodium percarbonate particles, a process for their prepar

Details Coated sodium percarbonate particles, a process for their prepar Coated sodium percarbonate particles, a process for their prepar

1996-01-16

1999-05-11

Le, H. Thi

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

25217414, 428404, 428699, 428701, 428702, B32B5/16

Patent

active

059026820

ABSTRACT:
Coated sodium percarbonate particles contain, in the coating, sodium carbonate and also one or more magnesium compounds, preferably magnesium sulfate, optionally in a partially hydrated form, in a single layer or in separate layers in the coating. Preferred coated sodium percarbonate particles contain two layers. Particles are prepared by spraying aqueous solutions containing the coating components onto sodium percarbonate in a fluidized bed with simultaneous evaporation of the water. The particles are suitable for use in detergents, bleaches and cleansing agents.

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patent: 5346680 (1994-09-01), Roesler et al.
patent: 5366655 (1994-11-01), Yamashita et al.
patent: 5462804 (1995-10-01), Kokubu et al.
patent: 5496542 (1996-03-01), Hauschild
patent: 5603911 (1997-02-01), Korvela et al.

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