Process and apparatus for the preparation of fine powders

Details Process and apparatus for the preparation of fine powders Process and apparatus for the preparation of fine powders

1996-06-24

1998-12-29

Szekely, Peter A.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

51298, 239 9, 241 15, 241 16, 241 30, 524904, B02C 404, B02C 400

Patent

active

058543112

ABSTRACT:
Methods and means for grinding materials to fine powders in a media mill in which the materials are ground while immersed in a liquid. In the preferred embodiments, the liquid is a gas at room temperatures and pressures, the materials are resin mixtures and the fine powders are predominantly in a size range of from about 10 to about 40 micrometers. Other benefits may be achieved if the gas is in a supercritical state.

REFERENCES:
patent: 2347964 (1944-04-01), Cuno
patent: 3755244 (1973-08-01), Hart
patent: 3756979 (1973-09-01), Ventres et al.
patent: 3925096 (1975-12-01), Karkov
patent: 4176143 (1979-11-01), Kraft et al.

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