Production of polyamide powders by ester aminolysis
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United States of America Patent
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Jul 20, 2021
Grant Date -
Dec 7, 2017
app pub date -
Dec 22, 2015
filing date -
Dec 22, 2014
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Abstract
A method for producing a polycondensate powder dispersion, characterised in that it 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 solubilise 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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