Conversion of clay to its colloidal form by hydrodynamic attriti

Details Conversion of clay to its colloidal form by hydrodynamic attriti Conversion of clay to its colloidal form by hydrodynamic attriti

1973-06-22

1976-04-20

Lovering, Richard D.

Compositions

Preservative agents

Anti-corrosion

106 72, 252 28, 252317, 252378R, 260 40R, 423328, B01J 1300

Patent

active

039518507

ABSTRACT:
A colloidal clay is prepared by initially slurrying a clay material with water, heating the slurry, and commingling the slurry with steam to pressurize the slurry and hydrate the clay. Thereafter the pressurized slurry is rapidly expanded, as by jetting to an area of lesser pressure, to cause at least some colloidal particles to be formed of the clay. Next, and preferably, the clay is held in a holding zone for a time and at a temperature and pressure sufficient to optimize the formation of colloidal particles of the clay material. Thereafter, the colloidal particles are separated from the non-colloidal particles. The colloidal particles of clay so formed may be reacted with an "onium" base material to form a colloidal organophilic clay material useful as a gelling and/or suspension agent.

REFERENCES:
patent: 1275705 (1918-08-01), Laird
patent: 2091548 (1937-08-01), Kauffman
patent: 2433193 (1947-12-01), Bechtner
patent: 2531427 (1950-11-01), Hauser
patent: 2920832 (1960-01-01), Duke

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