Clariant International Ltd

Sarah Werner

Peter Klug

Klaus Raab

Dennis Heitmann

Ertan Akgün

Karl Scheitzeneder

Stefan Kreuzpointner

Martin Link

Jörg Appel

The invention relates to a method for preparing aqueous solutions of N,N-dimethylglucamine, characterized by first preparing an adduct of N-methylglucamine and formaldehyde in water at temperatures of between 15&#xb0; C. and 40&#xb0; C., and subsequently reacting said adduct to N,N-dimethylglucamine in the presence of a metal catalyst under hydrogen pressure at 20-68&#xb0; C., followed by secondary hydrogenation at 70-120 bar and 70-110&#xb0; C. once hydrogen absorption at 20-68&#xb0; C. is completed.

Catalytic process for preparing N,N-dimethylglucamine from N methylglucamine

The invention relates to a continuous method for producing a tenside, containing a compound of the formula (1), wherein Ris a fatty acid alkyl residue and Ris a linear or branched Cto Chydrocarbon residue, and x is in the range from 1 to 15 by conversion of fatty acid alkyl esters or fatty acid triglycerides having an N-n-alkylized polyhydroxy compound in the presence of an alkali catalyst or a catalyst selected from hydroxides or alcoholates of the 2nd and 4th secondary group of the periodic system at a temperature in the range from 40 to 300&#xb0; C. 

Continuous process for producing a surfactant in a tube reactor

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Mühldorf, Germany

Sarah Werner