1,4-of 1,5-dichlorohydrocarbons - continuous prepn using simple appts

Continuous prepn. of 1,4- or 1,5-dichlorinated hydrocarbons by reaction of a liq. mixt. of 1,4- or 1,5-diols and/or corresp. cyclic ethers and HCl, opt. in the presence of a catalyst. The vapour of the boiling reaction mixt. is fractionated in such a way that a liq. mixt. of the dichloro cpd. and H2O is obtd. on one hand and a gaseous mixt. of HCl, cyclic ether and possibly remaining dichloro cpd. on the other; after condensing the gaseous mixt. is led back to the reaction mixt. The process is esp. used for prepn, of 1,4-dichlorobutane and 1,5-dichloropentene. Only simple appts. is required and approx. normal press.