Method for producing aluminum dialkyl phosphinates

Details Method for producing aluminum dialkyl phosphinates Method for producing aluminum dialkyl phosphinates

C - Chemistry, Metallurgy

07

F

C07F 9/30 (2006.01)

Patent

CA 2267168

The invention concerns a method for producing aluminum phosphinates of the general formula (I), in which R1, R2 are identical or different, linear or branched and represent a C1-C8-alkyl or phenyl, in which the corresponding alkali metal phosphinate of the general formula (III) is made to react with aluminum sulfate, in which R1 and R2 have the above-mentioned meaning and M stands for a metal of group I of the periodic table.

L'invention concerne un procédé de production de dialkylphosphinates d'aluminium de formule (I), dans laquelle R?1¿ et R?2¿ sont identiques ou différents, linéaires ou ramifiés, et représentent alkyle C¿1?-C¿8? ou phényle. Selon ce procédé, on fait réagir le phosphinate de métal alcalin correspondant de formule (III) avec du sulfate d'aluminium. Dans la formule (III), R?1¿ et R?2¿ ont la signification indiquée ci-dessus et M représente un métal du groupe I de la classification périodique des éléments.

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