Method for the production of N-Vinyl-2-Pyrrolidone by gas-phase

Details Method for the production of N-Vinyl-2-Pyrrolidone by gas-phase Method for the production of N-Vinyl-2-Pyrrolidone by gas-phase

1996-01-31

1996-10-29

Springer, David B.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548552, 502201, 502226, 502227, 502262, 502308, 502309, 502310, C07D207267

Patent

active

055697704

ABSTRACT:
The present invention relates to a method for the production of N-vinyl-2-pyrrolidone by gas-phase reaction at atmospheric pressure. The method is characterized in that a gas-phase reaction is conducted by using N-.beta.-Hydroxyethyl-2-Pyrrolidones serving as raw materials, at a temperature of 300.degree.-450.degree. C., a space velocity of 500-4500 hr.sup.-1 in the presence of a mixed oxide of group IV elements, or an oxide of group IV elements, which has been modified by group I or group II elements.

REFERENCES:
patent: 2669570 (1954-02-01), Schnizer et al.
patent: 2775599 (1956-12-01), Puetzer et al.
patent: 3821245 (1974-06-01), Kanetaka et al.

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