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:
Sep. 23, 2003
Filed:
May. 02, 2002
Christian Blaufelder, Wuppertal, DE;
Reinhard Broucek, Wuppertal, DE;
Axel Carstens, Wuppertal, DE;
Ludwig Eisenhuth, Wuppertal, DE;
Akzo Nobel N.V., Arnhem, NL;
Abstract
The invention relates to a process for preparing betaines of formula (I) wherein R represents a C -C hydrocarbon group, and R and R independently represent a C -C hydrocarbon group, comprising reacting an aqueous solution of an ethoxylated quaternay ammonium compound of formula (II) wherein R , R , and R have the same meaning as described above and X represents a suitable anion, with oxygen or an oxygen-containing gas under alkaline conditions in the presence of a supported and promoted Pt catalyst at a temperature ranging from room temperature to 70° C. Preferably, use is made of a Pt/Bi/C catalyst. The invention process is particularly suitable for converting choline chloride into betaine, which is used as an animal feed