POLYIMIDE POWDER HAVING CONTROLLED PARTICLE SIZE AND METHOD FOR PREPARING SAME
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United States of America Patent
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Apr 4, 2024
app pub date -
Dec 28, 2020
filing date -
Nov 30, 2020
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The present invention relates to a method for producing a polyimide powder, particularly to a method for producing a polyimide powder, which includes a) preparing a dispersion by dispersing a dianhydride and a diamine in distilled water; and b) introducing the dispersion of step a) into a reactor and conducting the reaction at a stirring speed of 300 rpm or more under temperature and pressure conditions. In the present invention, it is possible to improve physical properties and control the particle size and dispersibility without additional processes by using water-based polymerization and controlling the stirring speed in the production process.
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