Method for production of aziridines and N-vinylamides

Details Method for production of aziridines and N-vinylamides Method for production of aziridines and N-vinylamides

2005-08-02

2005-08-02

Shameem, Golam M M (Department: 1626)

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

active

06924378

ABSTRACT:
In the production of aziridines or N-vinyl amides respectively from an alkanolamine or an alkanolamide by the known method comprising a reaction step, a collecting step and/or a condensation step, a purifying step, and a recovering step, this invention is directed toward preventing formation of a solid substance in the vacuum pumps and the vacuum lines. The object of this invention is accomplished by performing the decompression at the purifying step and the decompression at the recovering step in mutually different decompression systems.

REFERENCES:
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patent: 5120860 (1992-06-01), Olson et al.
patent: 6566534 (2003-05-01), Oka et al.
patent: 4-217659 (1992-08-01), None
patent: 5-55498 (1993-08-01), None

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