Basf Aktiengesellschaft

Armin Volker Grenacher

Harald Schwahn

Max Strohmeyer

Friedrich Sauer

Heinrich-Josef Blankertz

Gerhard Borchert

Willi Sch&ouml;nmann

Hans Stepp

Franz Merger

Herwig Hoffmann

Michael Röper

Michael Roeper

Roland Krokoszinski

Michael R&ouml;per

Karl Fischer

Klaus Diehl

Joerg Liebe

Manfred Herr

Willi Schönmann

Heinrich Elliehausen

Hans-Georg Hein

Edgar Hahl

Hans-J&uuml;rgen Fr&ouml;hlich

Essentially monounsaturated polyalkylenes having from 30 to 700 carbon atoms are continuously hydroformylated by a process in which i) a hydroformylation-active cobalt carbonyl catalyst is prepared from a catalyst precursor dissolved in an aqueous phase in the absence of the polyalkylenes, ii) the polyalkylenes are hydroformylated by means of synthesis gas in the presence of the cobalt carbonyl catalyst in a reaction zone, iii) the cobalt carbonyl catalyst is separated from the output from the reaction zone with at least partial reformation of the catalyst precursor and the catalyst precursor is recirculated to step i).

Method for the continuous hydroformylation of polyakenes having 30 to 700 carbon atoms

Method for hydroformylating olefins having between 20 and 400 carbon atoms

Continuous process for hydroformylating olefins with 6 to 20 carbon atoms

In a process for preparing aldehydes and/or alcohols having from 6 to 30 carbon atoms by hydroformylation of olefins by means of synthesis gas in the presence of a catalyst at from 120&deg; C. to 210&deg; C. and pressures of from 100 to 400 bar, a reaction mixture comprising olefins, synthesis gas and catalyst or catalyst precursor is, according to the present invention, introduced at high velocity into a high-pressure reactor via a nozzle having an adjustable flow cross section.

Preparation of aldehydes and/or alcohols having from 6 to 30 carbon atoms

Hydroformylation process

Alkanals having a 2-alkyl branch are obtained from mixtures which contain the alkanals having a 2-alkyl branch in addition to n-alkanals, 3-alkylalkanals and/or further isomers by a process in which

Obtaining alkanals having a 2-alkyl branch from alkanal mixtures

Preparation of C.sub.3 - to C.sub.25 -alkanols by catalytic hydrogenation of corresponding crude C.sub.3 - to C.sub.25 -alkanols, as obtained in the cobalt-catalyzed hydroformylation of C.sub.2 - to C.sub.24 -olefins, by partial 80-95% hydrogenation conversion in a first stage using a silica supported nickel and molybdenum oxide catalyst and then completing the conversion in a second stage using a cobalt catalyst containing copper, manganese, molybdenum and,optionally other activating additives. The process is especially adapted to the economic preparation of C.sub.9 -C.sub.11 - and C.sub.13 -C.sub.15 -alkanols which are used to prepare high-grade plasticizer esters.

Preparation of C.sub.3 -C.sub.25 -alkanols

Aldehydes are obtained from the gaseous product of the hydroformylation of olefinically unsaturated compounds using a rhodium catalyst by a process (cf. FIG. 2) in which

Recovery of aldehydes from hydroformylation reaction gas

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Mutterstadt, Germany

Armin Volker Grenacher