PRODUCTION OF POLYAMIDE POWDERS BY ESTER AMINOLYSIS
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United States of America Patent
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Nov 4, 2021
app pub date -
Jul 13, 2021
filing date -
Dec 22, 2014
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Abstract
A method for producing a polycondensate powder dispersion, wherein the method includes at least one step of polycondensation: i) of at least one diester and at least one diamine, and/or ii) at least one amino ester, while stirring, in a solvent that can solubilize both the diamine and the diester and/or the amino ester but not the polyamide that forms during the polycondensation, at a temperature between 30° C. and the boiling temperature of the solvent, in order to produce a powder precipitate dispersed in the solvent.
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