METHOD FOR MAKING A CHLOROHYDRIN BY CHLORINATING A POLYHYDROXYLATED ALIPHATIC HYDROCARBON

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The invention concerns a method for making a chlorohydrin including the following steps : (a) reacting a polyhydroxylated aliphatic hydrocarbon, an ester of a polyhydroxylated aliphatic hydrocarbon, or a mixture thereof, whereof the alkali and/or alkaline-earth metal content is not more than 5g/kg, an oxidizing agent and an organic acid to obtain a mixture containing at least chlorohydrin and by-products; (b) subjecting at least part of the mixture obtained at step (a) to one or more treatments in steps subsequent to step (a); oxidizing at a temperature not less than 800 °C at least at one of the steps subsequent to step (a). © KIPO & WIPO 2008