Low water diamine/dicarboxylic acid salt preparation

Details Low water diamine/dicarboxylic acid salt preparation Low water diamine/dicarboxylic acid salt preparation

C - Chemistry, Metallurgy

07

C

C07C 51/00 (2006.01) C07C 51/41 (2006.01) C07C 209/00 (2006.01) C08G 69/28 (2006.01)

Patent

CA 2282570

The invention provides a process for directly manufacturing a diamine/dicarboxylic acid salt with a low water content. The process includes reacting a diamine with a dicarboxylic acid to form a diamine/dicarboxylic acid salt. The reaction of the diamine and the dicarboxylic acid is carried out in the presence of about 0.5 % to about 25 % by weight water, based on the weight of the reaction mixture, while providing conditions in the reaction mixture such that the reaction mixture is in substantially solid particulate form.

L'invention concerne un procédé permettant de fabriquer directement un sel de diamine/acide dicarboxylique à faible teneur en eau. Ledit procédé consiste à faire réagir une diamine avec un acide dicarboxylique pour former un sel de diamine/acide dicarboxylique. On fait réagir la diamine et l'acide carboxylique en présence de 0,5 % environ à 25 % environ en poids d'eau, en fonction du poids du mélange réactionnel, tout en créant dans le mélange réactionnel des conditions telles que ledit mélange se présente sensiblement sous forme de particules solides.

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