Process for purifying polar vinyl compound

Details Process for purifying polar vinyl compound Process for purifying polar vinyl compound

1994-09-16

1996-04-23

Killos, Paul J.

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

Organic compounds

Carboxylic acid esters

C07C 6748

Patent

active

055105157

ABSTRACT:
The present invention provides a process for purifying a polar vinyl compound, comprising pressurizing a crude polar vinyl compound containing impurities such as polymerization inhibiting substances and components of starting materials used in preparation of the polar vinyl compound to 500-3000 atm at 0.degree.-100.degree. C., the polar vinyl compound having at least one member selected from among oxygen, nitrogen and sulfur atoms, to thereby form crystals of the polar vinyl compound and separating the crystals of the polar vinyl compound from a liquid phase under pressure.

REFERENCES:
patent: 4337215 (1982-06-01), Doi et al.
patent: 4401516 (1983-08-01), Matzinger
patent: 4780568 (1988-10-01), Pascoe
Database WPI, Week 8828, Derwent Publications, Ltd., London, GB; AN 88-194690 and JP-A-63 132 868 (Sumitomo Chem Ind KK) 4 Jun. 1988 (abstract).
Database WPI, Week 9320, Derwent Publications, Ltd., London, GB; AN 93-161786 and JP-A-5 092 102 (Idemitsu Petrochem Co.) 16 Apr. 1993 (abstract).

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