Method for making a chlorohydrin

Details Method for making a chlorohydrin Method for making a chlorohydrin

C - Chemistry, Metallurgy

07

C

C07C 29/62 (2006.01) C07C 31/36 (2006.01) C07C 31/42 (2006.01)

Patent

CA 2608715

The invention concerns a method for making a chlorohydrin including the following steps: (a) reacting a polyhydroxylated aliphatic hydrocarbon, an ester of polyhydroxylated hydrocarbon, or a mixture thereof, and a chlorinating agent and an organic acid to obtain a mixture containing chlorohydrin and chlorohydrin esters; (b) subjecting at least part of the mixture obtained at step (a) to one or more treatments in steps subsequent to step (a); (c) adding polyhydroxylated aliphatic hydrocarbon at least at one of the steps subsequent to step (a), so that it reacts, at a temperature not less than 20 ~C, with the chlorohydrin esters so as to form at least partly polyhydroxylated aliphatic hydrocarbon esters.

Procédé de fabrication d'une chlorhydrine comprenant les étapes suivantes: (a) on fait réagir un l'hydrocarbure aliphatique polyhydroxylé, un ester d'un hydrocarbure aliphatique polyhydroxylé, ou un mélange d'entre eux, avec un agent de chloration et un acide organique de façon à obtenir un mélange contenant de la chlorhydrine et des esters de la chlorhydrine; (b) on soumet au moins une partie du mélange obtenu à l'étape (a) à un ou plusieurs traitements dans des étapes ultérieures à l'étape (a); (c) on ajoute de l'hydrocarbure aliphatique polyhydroxylé à au moins une des étapes ultérieures à l'étape (a), pour qu'il réagisse, à une température supérieure ou égale à 20°C, avec les esters de la chlorhydrine de façon à former au moins partiellement des esters de l 'hydrocarbure aliphatique polyhydroxylé.

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