Chemistry: physical processes – Physical processes – Crystallization
Patent
1989-04-26
1991-03-05
Hruskoci, Peter
Chemistry: physical processes
Physical processes
Crystallization
210639, 210709, 210729, 264 9, 424489, 424492, 502 8, 423495, 514410, 514951, 514965, C01F 734
Patent
active
049974548
ABSTRACT:
The invention involves a method for making uniformly sized particles from solid compounds. First, a suitable solid compound is dissolved in a suitable solvent. Then, a precipitating liquid is infused, precipitating non-aggregated particles with substantially uniform mean diameter. The particles are then separated from the solvent. Depending on the solid compound and the desired particle size, the parameters of temperature, ratio of non-solvent to solvent, infusion rate, stir rate, and volume can be varied according to the invention. The precipitating liquid may be aqueous or non-aqueous, depending upon the relative solubility of the compound and the desired suspending vehicle.
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Fischer Harry W.
Violante Michael R.
Hruskoci Peter
The University of Rochester
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