Process for recovering 1,3-dimethyl-2-imidazolidinone

Details Process for recovering 1,3-dimethyl-2-imidazolidinone Process for recovering 1,3-dimethyl-2-imidazolidinone

2006-11-07

2006-11-07

Solola, Taofiq (Department: 1626)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

active

07132548

ABSTRACT:
The present invention provides a process for recovering 1,3-dimethyl-2-imidazolidinone comprising extracting 1,3-dimethyl-2-imidazolidinone from an aqueous solution containing it with n-butanol in the presence of an inorganic salt to obtain n-butanol layer and, subjecting the n-butanol layer to distillation.As 1,3-dimethyl-2-imidazolidinone can be recoverable at high purity from an aqueous solution containing 1,3-dimethyl-2-imidazolidinone easily and efficiently without using alkali, the present process is industrially advantageous.

REFERENCES:
patent: 03-038571 (1991-02-01), None
patent: 07/070080 (1995-03-01), None
patent: 11-152272 (1999-06-01), None

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