Process for the separation of glycols from dimethyl terephthalat

Details Process for the separation of glycols from dimethyl terephthalat Process for the separation of glycols from dimethyl terephthalat

1994-01-26

1995-02-21

Manoharan, Virginia

Distillation: processes, separatory

Adding material to distilland except water or steam per se

At least two materials

203 60, 203 71, 560 78, 568868, 568871, B01D 336

Patent

active

053912632

ABSTRACT:
Separation of ethylene glycol and diethylene glycol from dimethyl terephthalate is accomplished by distillation using methyl benzoate or the methyl ester of p-toluic acid as an azeotropic agent.

REFERENCES:
patent: 3227743 (1966-01-01), Shaw et al.
patent: 4028195 (1977-06-01), Becker et al.
patent: 4057471 (1977-11-01), Chueh
patent: 4151048 (1979-04-01), Becker et al.

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