Method for producing nylon salt powder, and method for producing nylon
AssigneeUnitika Ltd.
InventorsMakoto Nakai, Mariko Morimoto, Mitsuhiro Kawahara
Life of this patent
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Abstract
Disclosed is a method for producing a nylon salt powder, wherein in the production of a nylon salt powder by allowing a dicarboxylic acid powder to react, the content of water is regulated to be 5% by mass or less in relation to the total amount of the dicarboxylic acid powder and a diamine, the dicarboxylic acid powder is beforehand heated to a temperature equal to or higher than melting point of the diamine and equal to or lower than the melting point of the dicarboxylic acid, and while this heating temperature is being maintained, the diamine is added to the dicarboxylic acid powder in such a way that the dicarboxylic acid powder maintains the condition of being in powder form.
Claims6
A method for producing a nylon salt powder, wherein in a production of a nylon salt powder by allowing a dicarboxylic acid powder to react, a content of water is regulated to be 5% by mass or less in relation to a total amount of the dicarboxylic acid powder and a diamine, the dicarboxylic acid powder is beforehand heated to a temperature equal to or higher than a melting point of the diamine and equal to or lower than a melting point of the dicarboxylic acid, and while this heating temperature is being maintained, the diamine is added to the dicarboxylic acid powder in such a way that the dicarboxylic acid powder maintains a condition of being in powder form.
Dependencies are inferred from the claim text.