The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 06, 2011
Filed:
Jul. 07, 2007
Dirk Buehring, Burghausen, DE;
Andreas Gallas, Erlbach, DE;
Klaus Raab, Burgkirchen, DE;
Franz-xaver Scherl, Burgkirchen, DE;
Olaf Wachsen, Garching, DE;
Dirk Buehring, Burghausen, DE;
Andreas Gallas, Erlbach, DE;
Klaus Raab, Burgkirchen, DE;
Franz-Xaver Scherl, Burgkirchen, DE;
Olaf Wachsen, Garching, DE;
Clariant Finance (BVI) Limited, Tortola, VG;
Abstract
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.