Degussa Aktiengesellschaft

Evonik Degussa Gmbh

Evonik Operations Gmbh

Joerg Lotz

Klaus Stadtmueller

Thomas Haas

Guido Stochniol

Willi Hofen

Michael Schwarm

Bernd Jaeger

Christian Lettmann

Guenter Knaup

Milan Latinovic

Marco Lerm

The present invention relates to a method for preparing a composition comprising one or more omega-3 fatty acid salt(s), the composition obtainable or obtained by this method, and also the use of this composition for the preparation of foodstuffs, food supplements or pharmaceutical products.

Method for preparing a composition comprising omega-3 fatty acid salts and amines

Processes for preparing monochloroethylene carbonate include reacting ethylene carbonate with chlorine gas in a liquid phase under irradiation of UV light and introducing a separate feed of an inert gas into the liquid phase. Monochloroethylene carbonate may be subsequently converted to vinylene carbonate.

Process for preparing monochloroethylene carbonate and subsequent conversion to vinylene carbonate

The invention relates to a process for increasing the selectivity of the hydrogenation of 4,4'-diaminodiphenylmethane (4,4&#x2032;-MDA) to diaminodicyclohexylmethane (4,4&#x2032;-HMDA) by catalytic hydrogenation of a mixture containing 4,4&#x2032;-MDA as the main component and its mono-N-methyl derivative as a secondary component. According to the invention, the hydrogenation is terminated before a conversion of 4,4&#x2032;-MDA to 4,4&#x2032;-HMDA of 99% is achieved. Under these conditions, a substantially smaller proportion of the N-methyl-4,4&#x2032;-MDA is hydrogenated to N-methyl-4,4-HMDA.

Process for increasing the selectivity of the hydrogenation of 4,4'-diaminodiphenylmethane to 4,4&#x2032;-diaminodicyclohexylmethane in the presence of an N-alkyl-4,4&#x2032;-diaminodiphenylmethane

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Kalbach, Germany

Joerg Lotz