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:
Jan. 30, 2007
Filed:
Sep. 08, 2000
Lothar Friesenhagen, Duesseldorf, DE;
Stephan Heck, Pulheim, DE;
Norbert Klein, Mettmann, DE;
Thomas Markert, Monheim, DE;
Gerrit Pelzer, Duesseldorf, DE;
Markus Schneider, Duisburg, DE;
Lothar Friesenhagen, Duesseldorf, DE;
Stephan Heck, Pulheim, DE;
Norbert Klein, Mettmann, DE;
Thomas Markert, Monheim, DE;
Gerrit Pelzer, Duesseldorf, DE;
Markus Schneider, Duisburg, DE;
Kao Corporation, Tokyo, JP;
Abstract
Alkyl-substituted butenols having the formula (I):R—CH—CH═CR—CHOH   (I)wherein Ris a saturated or olefinically unsaturated alkyl or cycloalkyl group having from 4 to 16 carbon atoms and wherein Ris optionally substituted by an alkyl, cycloalkyl, aryl or alkaryl having up to 12 carbon atoms; Ris hydrogen or an alkyl group having from 1 to about 6 carbon atoms are produced by a process which comprises: (1) reacting an aldehyde of the formula (II):R—CH—CHO   (II)wherein Rhas the same meaning as in formula (I), with the corresponding lower aldehyde to form an unsaturated aldehyde in an inert organic solvent; (2) continuously contacting an optionally calcined copper/zinc catalyst with the unsaturated aldehyde under isothermal conditions at temperatures of from about 45 to about 60° C. and under a hydrogen pressure of from 1 to about 300 bar.