Continuous method for producing fatty acid alkanolamides

Details Continuous method for producing fatty acid alkanolamides Continuous method for producing fatty acid alkanolamides

C - Chemistry, Metallurgy

07

C

C07C 231/02 (2006.01) C07C 233/18 (2006.01)

Patent

CA 2720327

The invention relates to a continuous method for producing fatty acid alkanol amides, wherein at least one fatty acid of the formula (I) R3-COOH, where R3 is an optionally substituted aliphatic hydrocarbon radical with 5 to 50 carbon atoms, having at least one alkanol amine of the formula (II) HNR1R2, where R1 is a hydrocarbon radical carrying at least one hydroxyl group and having 1 to 50 carbon atoms and R2 is hydrogen, R1 or a hydrocarbon radical having 1 to 50 carbon atoms, is reacted into an ammonia salt, and said ammonia salt is subsequently reacted in a reaction tube, the longitudinal axis thereof being disposed in the propagation direction of the microwaves of a monomode microwave applicator, under the action of microwave radiation into fatty acid alkanol amide.

L'invention porte sur un procédé continu de préparation d'alcanolamides d'acides gras, dans lequel au moins un acide gras de formule (I) R3-COOH (I), dans laquelle R3 représente un résidu hydrocarboné aliphatique éventuellement substitué et ayant 5 à 50 atomes de carbone, est mis à réagir avec au moins une alcanolamine de formule (II) HNR1R2 (II), dans laquelle R1 représente un résidu hydrocarboné pourtant au moins un groupe hydroxyle et ayant de 1 à 50 atomes de carbone et R2 est un atome d'hydrogène, R1 ou un résidu hydrocarboné ayant 1 à 50 atomes de carbone, pour donner un sel d'ammonium, ce sel d'ammonium étant ensuite mis à réagir, en étant exposé à des micro-ondes dans un tube de réaction dont l'axe longitudinal se trouve dans la direction de propagation des micro-ondes d'un applicateur de micro-ondes monomodal, pour donner l'alcanolamide d'acide gras.

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