Process and apparatus for the preparation of fine powders
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United States of America Patent
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Dec 29, 1998
Grant Date -
N/A
app pub date -
Jun 24, 1996
filing date -
Jun 24, 1996
priority date (Note) -
Expired
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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.
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