首页>
外国专利>
Di:chloroethyl formal prepn. from chlorohydrin and formaldehyde - with reaction prods. sepd. by liq.-liq. extn(s). using di:chloroethyl formal as solvent
Di:chloroethyl formal prepn. from chlorohydrin and formaldehyde - with reaction prods. sepd. by liq.-liq. extn(s). using di:chloroethyl formal as solvent
Process comprises reacting formaldehyde and ethylene glycol chlorhydrin in the presence ofan acid catalyst. Improvement is that the reaction prods are sepd. by =1 liq.-liq. extn. di (chloroethyl) formed as solvent. The process avoids both salting-out and heteroazeotropic distn. to extract the water, and is partic. applicable to continuous operation.
展开▼