Purification process for cyclic formals

Details Purification process for cyclic formals Purification process for cyclic formals

1994-01-21

1995-10-10

Manoharan, Virginia

Distillation: processes, separatory

Distilling to separate or remove only water

From organic compound

203 68, 549430, B01D 336, C07D 1302

Patent

active

054568056

ABSTRACT:
A purification process for cyclic formals, in which water is efficiently removed from a mixture of a cyclic formal and water which is difficult to be separated from the mixture, thereby obtaining a cyclic formal of high purity which contains only an extremely small amount of water.
The purification process for cyclic formals is characterized by the steps of supplying a mixture of a cyclic formal and water into a distillation tower, effecting distillation while supplying n-pentane into the distillation tower and taking out a purified cyclic formal as a bottom liquid.

REFERENCES:
patent: 3857759 (1974-12-01), Fiore et al.
CA 103(6):39488K.
CA 113(6):4576j.

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