Method of preparing dichloropropanols from glycerine
AssigneeSpolek pro chemickou a hutni vyrobu, akciova
InventorsPavel Kubicek, Petr Sladek, Ivana Buricova
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Abstract
A method of highly selective catalytic hydrochlorination of glycerine and/or monochloropropanediols to the dichloropropanol products 1,3-dichloro-2-propanol and 2,3-dichloro-1-propanol, carried out in at least one continuous reaction zone at reaction temperatures in the range of 70-140° C. and with continuous removing of the water of reaction, the liquid feed containing at least 50% by weight of glycerine and/or monochloropropanediols. The method can be carried out in a continuously operating one-step circulation reactor or a cascade of continuous flow reactors of the liquid-gas type.
Claims16
A method of preparing 1,3-dichloro-2-propanol and 2,3-dichloro-1-propanol comprising hydrochlorinating glycerine and/or monochloropropanediols with gaseous hydrogen chloride with catalysis of a carboxylic acid, wherein said hydrochlorination is carried out solvent-free in at least one continuous reaction zone at reaction temperatures in the range of 70-140° C. and with continuous removing of the water of reaction by distillation at reduced pressure, the liquid feed containing at least 50% by weight of glycerine and/or monochloropropanediols.
Dependencies are inferred from the claim text.