Organic compounds -- part of the class 532-570 series – Organic compounds – Amino nitrogen containing
Patent
1988-08-01
1991-12-24
Raymond, Richard L.
Organic compounds -- part of the class 532-570 series
Organic compounds
Amino nitrogen containing
564490, C07C20948
Patent
active
050755072
ABSTRACT:
This invention relates to a process for the separation of acrylonitrile used in the cyanoethylation of glycols to produce a bis(cyanoethylated) aliphatic glycol from the resulting glycol which is then reduced with hydrogen to produce the corresponding bis(aminopropyl) aliphatic glycol. In this process, acrylonitrile is reacted with an aliphatic glycol in stoichiometric excess and the acrylonitrile removed from the cyanoethylated glycol by reaction with aliphatic primary or secondary amine prior to effecting the hydrogenation of the cyanoethylated aliphatic glycol in the presence of the acrylonitrile-amine reaction product. The reaction product then can be separated by conventional techniques such as distillation.
REFERENCES:
patent: 2160578 (1939-05-01), Schmidt
patent: 2408959 (1946-10-01), Stegemeyer
patent: 3163676 (1964-12-01), Potts
patent: 3799986 (1974-03-01), Poppelsdorf et al.
patent: 4313004 (1982-01-01), Kluger et al.
Adams et al., "Organic Reactions", vol. IV, pp. 82-85, and 89-92 (1949).
Albanese Thomas A.
Carr Richard V. C.
Galaton Steven M.
Johnson Thomas A.
Air Products and Chemicals Inc.
Brewer Russell L.
Marsh William F.
Raymond Richard L.
Simmons James C.
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