Production of polysuccinimide in an organic medium

Details Production of polysuccinimide in an organic medium Production of polysuccinimide in an organic medium

C - Chemistry, Metallurgy

08

G

C08G 69/10 (2006.01) C08G 73/10 (2006.01)

Patent

CA 2214408

There is disclosed a process for preparing polysuccinimides by the thermal condensation of amino acids such as L-aspartic acid in high boiling organic reaction medium whereby a polymer is provided having highly desirable color characteristics. The organic medium is selected from high boiling alkyl alcohols having from 7 to 14 carbon atoms such as isodecanol and high boiling alkanes having from 10 to 20 carbon atoms such as dodecane. The organic medium can be employed in conjunction with acid catalysts for the condensation reaction and can be easily recovered for reuse with little or no need for purification.

Cette invention concerne un procédé de préparation de polysuccinimides par thermocondensation d'acides aminés, tels que de l'acide L-aspartique, dans un milieu de réaction organique à haut point d'ébullition et qui assure la formation d'un polymère ayant des caractéristiques de couleur très recherchées. Le milieu organique est choisi parmi les alcools d'alkyle à haut point d'ébullition ayant de 7 à 14 atomes de carbone tels que l'isodécanol, et parmi les alcanes à haut point d'ébullition ayant de 10 à 20 atomes de carbone tels que le dodécane. Ce milieu organique peut être utilisé en association avec des catalyseurs acides pour la réaction de condensation, et il est facilement récupérable après une faible purification ou même sans aucune purification, aux fins d'une utilisation ultérieure.

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