Method for separating tetraalkylammonium salts

Details Method for separating tetraalkylammonium salts Method for separating tetraalkylammonium salts

1972-07-27

1978-02-07

Coughlan, Jr., Paul M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

204 73A, C07C 8732

Patent

active

040727130

ABSTRACT:
Apparatus and method for separating tetraalkylammonium salt from a first stream comprising adiponitrile, dissolved tetraalkylammonium salts, and unconverted acrylonitrile discharging from an electrohydrodimerization process by passing the first stream through a distillation zone for separating unconverted acrylonitrile therefrom, mixing aqueous phosphoric acid with the resultant bottoms stream to form an emulsion, and separating the emulsion into an essentially salt-free organic phase and a tetraalkylammonium salt-containing aqueous phase.

REFERENCES:
patent: 3267131 (1966-08-01), Campbell et al.
patent: 3280168 (1966-10-01), Campbell et al.
patent: 3335162 (1967-08-01), Campbell et al.
patent: 3493597 (1970-02-01), Campbell et al.
patent: 3674653 (1972-07-01), Seko et al.

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