Hoechst Aktiengesellschaft

Clariant Finance (Bvi) Limited

Clariant Produkte (Deutschland) Gmbh

Clariant International Ltd

Andreas Gallas

Franz-Xaver Scherl

Klaus Raab

Olaf Wachsen

Dirk Buehring

Martin Glos

Franz Xaver Scherl

Bernd Papenfuhs

Hubert Seitz

Dirk BÜHRING

The invention provides a process for preparing polyetheramines of the formula (1), R(NRR), in which n is a number from 1 to 20, Rrepresents an organic radical that contains between 2 and 600 oxalkylene groups, and Rand Rare 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(NRR), with a compound of the formula (3), R(OH), 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.

Process for preparing polyetheramines

The invention relates to a method for producing amines of formula (1), wherein Ris an organic group containing from 2 to 600 alkoxy groups and Rand Rgroups are similar or different and represent a hydrogen atom or an organic group containing from 1 to 400 carbon atoms. The inventive method consists in bringing a compound of formula (2) into contact a compound of formula (3) in the presence of hydrogen with a metal-containing catalyst, wherein the metal content in cobalt is equal to or greater than 80% by weight.

Polyetheramine production method

In the process described, purification and improvement in odor of, in particular, fatty alkyldimethylamines is achieved by exposing, in the liquid phase, the tertiary amine to be treated to a vacuum or an inert gas stream. By means of the process according to the invention, in a relatively short time and in a simple and economical manner, a tertiary fatty alkylmethylamine is obtained which is essentially trimethylamine-free and improved in odor.

Process for purifying tertiary fatty alkylmethylamines

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Erlbach, Germany

Andreas Gallas