Process for preparing polyetheramines

Details Process for preparing polyetheramines Process for preparing polyetheramines

2007-07-07

2011-12-06

Davis, Brian J (Department: 1621)

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

Organic compounds

Amino nitrogen containing

C564S474000, C564S479000

Reexamination Certificate

active

08071814

ABSTRACT:
The invention provides a process for preparing polyetheramines of the formula (1), R2(NR1R3)n, in which n is a number from 1 to 20, R2represents an organic radical that contains between 2 and 600 oxalkylene groups, and R1and R3are alike or different and represent hydrogen or an organic radical having 1 to 400 carbon atoms, by combining a compound of the formula (2), H(NR1R3), with a compound of the formula (3), R2(OH)n, in the presence of hydrogen with a metal-containing catalyst whose metal content, based on the dry, reduced catalyst excluding any support material that may be present, is composed either of at least 80% by mass of cobalt or, in the case of Raney catalysts, of at least 80% by mass of metals from the group consisting of cobalt and aluminium, the catalyst containing less than 5% by mass of copper.

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