C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 29/62 (2006.01) C07C 29/94 (2006.01) C07C 31/36 (2006.01) C07C 31/42 (2006.01)
Patent
CA 2608723
The invention concerns a method for preparing chlorohydrin which consists in (a) reacting a polyhydroxylated aliphatic hydrocarbon, an ester of a polyhydroxylated aliphatic hydrocarbon, or a mixture thereof, with a chlorinating agent to obtain a mixture containing chlorohydrin, esters of chlorohydrin and water; (b) subjecting at least one fraction of the mixture obtained at step (a) to a distillation and/or stripping treatment to obtain one part concentrated in water, in chlorohydrin and in ester of chlorohydrin; (c) subjecting at least one fraction of the part obtained at step (b) to a separation process in the presence of at least one additive to obtain a portion concentrated in chlorohydrin and in esters of chlorohydrin and which contains less than 40 wt. % of water.
Procédé de préparation de préparation d'une chlorhydrine dans lequel: (a) on fait réagir un hydrocarbure aliphatique polyhydroxylé, un ester d'un hydrocarbure aliphatique polyhydroxylé , ou un mélange d'entre eux, avec un agent de chloration de façon à obtenir un mélange contenant de la chlorhydrine, des esters de chlorhydrine et de l'eau, (b) on soumet au moins une fraction du mélange obtenu à l'étape (a) à un traitement de distillation et/ou de stripping de façon à obtenir une partie concentrée en eau, en chlorhydrine et en esters de chlorhydrine, (c) on soumet au moins une fraction de la partie obtenue à l'étape (b) à une opération de séparation en présence d'au moins un additif de façon à obtenir une portion concentrée en chlorhydrine et en esters de chlorhydrine et qui contient moins de 40 % en poids d'eau.
Robic
Solvay (societe Anonyme)
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