Process for making dispersions comprising spherical particles

Details Process for making dispersions comprising spherical particles Process for making dispersions comprising spherical particles

1977-05-02

1979-03-13

Lovering, Richard D.

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

8 41R, 8 82, 8 92, 252311, 252314, C09B 6700, B01J 1300

Patent

active

041440250

ABSTRACT:
Dispersions of spherical particles of organic materials are obtained by continuously precipitating the organic material from solution in a volatile water miscible solvent which contains at least ten percent by weight water, by adding water containing a dispersing agent. Solvent is rapidly removed before recrystallization can take place thereby allowing the precipitated particles to be recovered in a spherical habit rather than in the normal crystal habit for the material.

REFERENCES:
patent: 3830750 (1974-08-01), Wellman

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