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:
Jun. 07, 2016
Filed:
Sep. 15, 2006
Oliver Huttenloch, Ispringen, DE;
Patrick Deck, Mannheim, DE;
Holger Ganz, Ludwigshafen, DE;
Michael Mauβ, Neustadt, DE;
Wolfgang Körnig, Leimen, DE;
Michael Bock, Ludwigshafen, DE;
Oliver Huttenloch, Ispringen, DE;
Patrick Deck, Mannheim, DE;
Holger Ganz, Ludwigshafen, DE;
Michael Mauβ, Neustadt, DE;
Wolfgang Körnig, Leimen, DE;
Michael Bock, Ludwigshafen, DE;
BASF SE, , DE;
Abstract
A process for the removal of acids from reaction mixtures, comprising at least one product of value which is sparingly soluble in water, by at least one unpolar amine as an auxiliary base, which includes: a) reacting the auxiliary base with the acid with formation of a salt; b) reacting the salt formed in step a) with a further base which accepts the acid with liberation of the auxiliary base and combines with the acid to be accepted from the auxiliary base to form a salt which is very readily soluble in water; c) extraction of the mixture obtained in step b) with water or an aqueous medium, wherein the salt of the further base dissolves in the aqueous phase and the product of value, or the solution of the product of value, in a suitable solvent and the auxiliary base form at least one separate nonaqueous phase; and d) removal by distillation of at least part of any solvent present from the at least one nonaqueous phase obtained in step c), to form two nonmiscible liquid phases.