Process for preparing pure fluoral and hexafluoroacetone...

Details Process for preparing pure fluoral and hexafluoroacetone... Process for preparing pure fluoral and hexafluoroacetone...

C - Chemistry, Metallurgy

07

C

260/634.1, 260/6

C07C 31/34 (2006.01) C07C 29/10 (2006.01) C07C 29/60 (2006.01) C07C 29/80 (2006.01) C07C 31/38 (2006.01) C07C 31/42 (2006.01) C07C 41/48 (2006.01) C07C 43/317 (2006.01)

Patent

CA 1236117

PRECIS DE LA DIVULGATION: L'invention concerne un procédé de fabrication des hydrates de fluoral et d'hexafluoroacétone purs. Ce procédé se caractérise en ce que on fait réagir un hémiacétal pur de formule: Image dans laquelle R est H ou CF3 et R1 est -OCH3 ou -OC2H5, avec de l'eau dans une colonne à distiller, on distille en tête le méthanol ou l'éthanol formé et on récupère en pied l'hydrate de fluoral (R = H) ou d'hexafluoroacétone (R = CF3) pur.

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