Cognis Deutschland Gmbh & Co. Kg

Kao Corporation

Gerrit Pelzer

Lothar Friesenhagen

Norbert Klein

Ansgar Behler

Bernhard Gutsche

Alfred Westfechtel

Thomas Markert

Norbert Huebner

Stephan Heck

C William Blewett

Albrecht Schwerin

Markus Schneider

Thomas B Downing

Steven A Kennedy

Alkyl-substituted butenols having the formula (I):R&#x2014;CH&#x2014;CH&#x2550;CR&#x2014;CHOH &#x2003;&#x2003;(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&#x2014;CH&#x2014;CHO &#x2003;&#x2003;(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&#xb0; C. and under a hydrogen pressure of from 1 to about 300 bar.

Method for producing alkyl-substituted butenols

A process for making aldehydes involving: (a) providing a fatty alcohol; (b) providing an oxidic copper/zinc catalyst; and (c) continuously dehydrogenating the fatty alcohol, in the presence of the oxidic copper/zinc catalyst, at a temperature of from about 200 to 280&#xb0; C. and a pressure of from about 10 mbar to 1 bar.

Method for producing aldehydes

A process for making branched, substantially unsaturated fatty alcohols involving: (a) providing a C fatty acid; (b) dimerizing the C fatty acid to form a monomer fraction containing branched, substantially unsaturated fatty acids; (c) removing the monomer fraction; (d) esterifying the branched, substantially unsaturated fatty acids contained in the monomer fraction into branched, substantially unsaturated fatty acid methyl esters; and (e) hydrogenating the branched, substantially unsaturated fatty acid methyl esters with their double bonds intact, to form the branched, substantially unsaturated fatty alcohols.

Process for making branched, substantially unsaturated fatty alcohols

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Duesseldorf, Germany

Gerrit Pelzer