Process for isolation of an organic amine

Details Process for isolation of an organic amine Process for isolation of an organic amine

2011-07-12

2011-07-12

Davis, Brian J (Department: 1621)

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

Organic compounds

Amino nitrogen containing

C564S498000

Reexamination Certificate

active

07977514

ABSTRACT:
The invention relates to a process for the isolation of an organic amine from a composition comprising the organic amine and an acid, or a salt of the organic amine and the acid, wherein the process comprises steps wherein ammonia or hydrazine is added to the composition thereby forming a multi-phase system comprising an organic amine-rich phase and an acid-rich phase, the organic amine-rich phase and the acid-rich phase obtained in step (i) are separated, and the organic amine is isolated from the organic amine-rich phase.

REFERENCES:
patent: 3151163 (1964-09-01), Nussbaum
patent: 3492354 (1970-01-01), Cywinski
patent: 3849496 (1974-11-01), Forster
patent: 2004-000114 (2004-01-01), None
International Search Report for PCT/EP2006/012307, mailed Mar. 15, 2007.
Written Opinion for PCT/EP2006/012307, mailed Mar. 15, 2007.
Database WPI Week, Derwent Publications, JP 2004-000114, Jan. 2004, XP002423726.

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