Free-flowing potassium bicarbonate composition

Details Free-flowing potassium bicarbonate composition Free-flowing potassium bicarbonate composition

1995-11-16

1996-09-03

Gibson, Sharon

Compositions

Preservative agents

Anti-caking, separative or protective coatings or zones

4234191, 423421, 4239202, C01D 742

Patent

active

055520847

ABSTRACT:
This invention provides a process for producing a particulate potassium bicarbonate composition which maintains its free-flow properties when stored under ambient temperature and relative humidity conditions. In the process, particulate potassium bicarbonate is blended with fine grain alkaline earth metal oxide, and the oxide is microdispersed on the surface of the particles. The oxide reacts with moisture and carbon dioxide to form an adherent physically-bonded coating of alkaline earth metal carbonate on the surface of the potassium bicarbonate particles. The altered particle surface prevents agglomeration of the potassium bicarbonate particles.

REFERENCES:
patent: 639674 (1899-12-01), Edwards
patent: 3267030 (1966-08-01), Dessart
patent: 5422087 (1995-06-01), Lajoie
patent: 5441669 (1995-08-01), Seper et al.
Hawley's Condensed Chemical Dictionary, 11th edition, 1967, p. 1117.
Grant and Hackh's Chemical Dictionary, 4th edition, McGraw-Hill Book Company, New York, 1987; pp. 348-349, 639, 573.
Hawley's Condensed Chemical Dictionary, 11th edition, Van Nostrand Reinhold Co., 1987, pp. 1 and 447.

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