Process for the manufacture of sodium perborate monohydrate and

Details Process for the manufacture of sodium perborate monohydrate and Process for the manufacture of sodium perborate monohydrate and

1978-04-10

1980-07-29

Peters, G. O.

Chemistry of inorganic compounds

Boron or compound thereof

Oxygen containing

423268, 423271, C01B 1512

Patent

active

042150973

ABSTRACT:
Abrasion resistant granules of sodium perborate monohydrate are made by introducing an aqueous solution containing hydrogen peroxide and an aqueous solution containing sodium metaborate simultaneously into a fluidized bed dryer which contains seeds of a size smaller than that of the desired granules. At least one surface active agent is introduced into at least one of the aqueous solutions containing hydrogen peroxide and sodium perborate. Water present in the aqueous solutions is evaporated by fluidization gas which is introduced into the fluidized bed dryer. The process produces, in one stage, granules of sodium perborate monohydrate having a high rate of dissolution, good flowability, abrasion resistance, and other desirable properties.

REFERENCES:
patent: 3109706 (1963-11-01), Leblon et al.
patent: 3194768 (1965-07-01), Lindner et al.
patent: 3914380 (1975-10-01), Dillenburg
patent: 4071462 (1978-01-01), Matsunga
patent: 4115519 (1978-09-01), Brichard et al.

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