Production of N-vinylformamide

Details Production of N-vinylformamide Production of N-vinylformamide

1994-10-16

1996-06-18

Kumar, Shailendra

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

Organic compounds

Amino nitrogen containing

564187, 564224, C07C23309

Patent

active

055279635

ABSTRACT:
An improved process for producing N-vinylformamide including the steps of evaporating N-(.alpha.-substituted-ethyl)formamide or ethylidenebisformamide under reduced pressure and thermally decomposing the vapor at 150.degree.-600.degree. C., wherein the improvement comprises performing thermal decomposition by means of a pyrolysis reactor which is made up of two stages, the first being an unpacked tubular reactor constructed such that liquid flows down and the second being a packed tubular reactor, while keeping the vapor temperature at 200.degree.-400.degree. C. at the outlet of the unpacked tubular reactor and the inside temperature of the packed tubular reactor at 200.degree.-600.degree. C.

REFERENCES:
patent: 3914304 (1975-10-01), Schnabel et al.
patent: 4490557 (1984-12-01), Dawson et al.
Abstract of Japanese Application No. 5-301851 1993.
Abstract of Japanese Application No. 3-181451 1991.
Abstract of Japanese Application No. 3-181452 1991.

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