Method for preparing powder coating compositions having improved particle properties
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United States of America Patent
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Dec 5, 1995
Grant Date -
N/A
app pub date -
Apr 13, 1994
filing date -
Apr 13, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method of preparing a powder coating composition comprises: (a) forming a mixture comprising solid particles which include a curable resin and a cross-linking agent that is reactive with the curable resin suspended in an aqueous liquid phase comprising water, a surfactant, a stabilizer, and a promoter; (b) warming the mixture to a temperature sufficient to effect reshaping and rounding of the particles; (c) separating the particles from the liquid phase; and (d) drying the particles to form a powder.
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