Production of sodium perborate crystals having improved abrasion

Details Production of sodium perborate crystals having improved abrasion Production of sodium perborate crystals having improved abrasion

1991-10-29

1993-06-01

Langel, Wayne

Chemistry of inorganic compounds

Boron or compound thereof

Oxygen containing

23302T, C01B 1512, C01D 130

Patent

active

052157300

ABSTRACT:
A method for improving abrasion resistance of sodium perborate tetrahydrate crystals prepared by reacting sodium metaborate with hydrogen peroxide in an aqueous slurry crystal growth medium, the improvement including highly supersaturating the aqueous slurry crystal growth medium. Also, an agent such as an excess of caustic may be added to the aqueous crystal growth medium to limit the growth rate of individual crystals.

REFERENCES:
patent: 3598524 (1971-08-01), Reilly
patent: 3985862 (1976-10-01), Knippschild et al.

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