Patent ID: 9242916
Filing Date: 2016-01-26
CPC Classification: C07C

Claim Text:
1. A process to make a dichlorohydrin-rich product, comprising: a first step, wherein glycerin is reacted with HCl in the presence of a catalyst and optionally in the presence of a solvent; a second step, wherein the reaction mixture of the first step is separated into a light liquid stream comprising dichlorohydrin, water and HCl, and a stream of heavy compounds including the catalyst; and a distillation step wherein the light liquid stream is used as a crude mixture which is separated into a first product stream which is rich in dichlorohydrin and low in HCl, and a second product stream which is an aqueous HCl-containing composition low in dichlorohydrin, and wherein an amount of water is added before, during, or both before and during, the distillation step, with the molar amount of water which is added to 1 mol of the mixture (r with x x x x