Process for the isolation of alkylated aromatic amines

Details Process for the isolation of alkylated aromatic amines Process for the isolation of alkylated aromatic amines

1989-09-20

1990-11-27

Hollrah, Glennon H.

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

Organic compounds

Amino nitrogen containing

564305, 564409, 564433, C07C 4500, C07C 4590

Patent

active

049737597

ABSTRACT:
Alkylated aromatic amines can be isolated from crude catalyst-containing mixtures of these with olefins by a procedure in which in general equivalent amounts of an inorganic base and water are added to the alkylation mixture, the catalyst is hydrolysed, the water present in the reaction mixture after the hydrolysis is removed by distillation and the solid catalyst residue is separated off. The catalyst-free alkylation mixture which remains is then fed to customary further working up.

REFERENCES:
patent: 2187820 (1938-08-01), Lecher et al.
patent: 2814646 (1957-11-01), Kolka et al.
patent: 3862233 (1975-01-01), Dunn
patent: 4128582 (1978-12-01), Governale et al.
patent: 4760185 (1988-06-01), Becker

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