Henkel Kommanditgesellschaft Auf Aktien

Cognis Deutschland Gmbh & Co. Kg

Guenther Demmering

Lothar Friesenhagen

Michael Koehler

Stephan Heck

Horst-Dieter Komp

Hans-Peter Kubersky

Franz-Josef Carduck

Gerd Goebel

Theo Fleckenstein

Udo Kreutzer

Leonhard Wittich

Christian Pelzer

Ansgar Behler

Karl Heinz Schmid

Achim Ansmann

Uwe Ploog

Karl-Heinz Schmid

Alfred Westfechtel

Hermann Hensen

Werner Seipel

Ingo Wegener

Frank Bongardt

Georg Assmann

Eberhard Peukert

Roland Hourticolon

Juergen Latzel

Hans-Juergen Sladek

Hans Peter Kubersky

Friedrich Hommers

Fritz Schuster

Hans-Guenther Richard

Oxidic catalysts containing 20 to 25% by weight of aluminum and 40 to 50% by weight of zinc which are suitable for the production of unsaturated fatty alcohols containing 8 to 22 carbon atoms by hydrogenation of unsaturated fatty acids, fatty acid lower alkyl esters or unsaturated fatty acid glycerides are disclosed. A process for the production of the oxidic aluminum/zinc catalysts is also disclosed.

Oxidic aluminum/zinc catalysts and a process of producing unsaturated fatty alcohols

Naturally occurring fats, oils and fatty derivatives are continuously hydrogenated to fatty alcohols in a fixed-bed reactor in the presence of hydrogen in excess and hydrogenation catalysts under static pressures of 50 to 300 bar and at temperatures of 160 to 320&deg; C. The liquid product is cooled and the excess hydrogen is returned to the reactor entrance by a gas circulation pump as a recycle gas after separation of the liquid product. The expense involved in cooling and reheating the recycle gas is eliminated without any reduction in the quality of the fatty alcohol produced providing the recycle gas is returned to the reactor entrance without reheating and the hydrogenation reaction is carried out under static pressures of at least 200 bar.

Process for the production of fatty alcohols

The proposal is for unsaturated fatty substances with improved cold behavior obtained by (a) transesterifying a new low stearic (LS) sunflower oil with an oleic acid content of over 85 wt. % and a stearic acid content of under 3 wt. %, and (b) hydrogenating the resultant methyl esters in the prior art manner into the corresponding unsaturated fatty alcohols in the iodine number range from 90 to 100. The fatty substances are also distinguished by improved color and odor and are suitable for making fatty chemical products, e.g. alkoxylates, ether sulphates, sulphates and esters.

Unsaturated fatty compounds with improved low-temperature behavior

A process for the production of fatty acid lower alkyl esters comprising the steps of: A) treating at least one fatty acid ester of glycerol with from about 0.3 to about 3% by weight, based on the weight of ester, of an acid at an elevated temperature; B) removing said acid from the treated fatty acid ester; and C) reacting the treated fatty acid ester with at least one lower aliphatic alcohol to transesterify the fatty acid ester.

Process for the production of fatty acid lower alkyl esters

Release agents for hydraulic binders

Process for the production of fatty alcohols based on vegetable fats and

Process for the production of substantially odorless fatty alcohol

Process for the production of unsaturated fatty alcohols

Mixtures of fatty alkyl lower alkyl esters having improved

C.sub.8-22 fatty alcohols are produced by a process which comprises contacting a triglyceride with hydrogen in the presence of a copper-zinc catalyst and in a reaction zone. The hydrogen pressure in the reaction zone is from about 200 to about 280 bar, the temperature of the entrance of the reaction zone is from about 200.degree. C. to about 230.degree. C., and the temperature of the exit of the reaction zone is from about 190.degree. C. to about 220.degree. C. The amount of 1,2-propanediol formed is optimized by the lower temperature of the exit portion of the reaction zone.

Hydrogenation process

Process for the catalytic hydrogenation of liquid fatty acid methyl

Growing community of inventors

Solingen, Germany

Guenther Demmering