METHOD FOR PREPARING LIQUID CHLOROPARAFFINS Russian patent published in 2005 - IPC

FIELD: organic chemistry, chemical technology, petroleum-chemical synthesis.

SUBSTANCE: invention relates to a method for preparing liquid chloroparaffins. Liquid chloroparaffins are prepared by the hydrochlorination reaction of olefin with hydrogen chloride in the presence of a catalyst wherein α-olefins of (C₁₈-C₂₈)-fraction are used as olefins and water is used as a catalyst taken in the amount 0.02-0.03 wt.-%. The hydrochlorination reaction is carried out at temperature 20-25°C and the volume feeding rate of hydrogen chloride 21-24 h^-1 followed by chlorination of the prepared reaction mass with chlorine in the presence of zeolite CaX taken in the amount 2-3 wt.-% at temperature 80-90° and the volume feeding rate of chlorine 19-22 h^-1. Using this process promotes to increasing conversion of HCl and chloroolefin, enhances the yield of products, simplifying and reducing cost of the process.

EFFECT: improved preparing method.

2 cl, 7 tbl, 7 ex