C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 213/08 (2006.01) C07C 213/02 (2006.01) C07C 219/08 (2006.01)
Patent
CA 2368879
The invention concerns a method for making an aqueous solution of unsaturated quaternary ammonium salts of formula (I), by reacting, in the presence of water, N,N-dimethylaminoethyl acrylate with a quaternizing agent of formula (II):R-Cl. Said method is characterised in that it consists in: carrying out said reaction continuously in a tubular reactor, introducing the quaternizing agent at the reactor base and introducing N,N-dimethylaminoethyl acrylate and water at the top of the reactor, said reaction being carried out at a temperature between 35 to 60 ·C and under pressure of 10-20 bars. R = methyl or benzyl radical.
Ce procédé de fabrication d'une solution aqueuse du sel d'ammonium quaternaire insaturé, répondant à la formule (I), par réaction, en présence d'eau, de l'acrylate de N,N-diméthylaminoéthyle (ADAME) avec un agent quaternisant de formule (II):R-Cl, est caractérisé par le fait que l'on conduit ladite réaction en continu dans un réacteur tubulaire, avec introduction de l'agent quaternisant en pied de réacteur et introduction de l'ADAME et de l'eau en tête de réacteur, ladite réaction étant conduite à une température de 35 à 60 ~C et sous une pression de 10 à 20 bars. R = radical méthyle ou benzyle.
Grosius Paul
Herbst Gilles
Riondel Alain
Atofina
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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