Taminco

Taminco Bvba

Taminco Bv

Dieter Ulrichts

Kristof Moonen

Daan Scheldeman

Kim Dumoleijn

Angelo Lauwaerts

Frederik Van Waes

The application relates to a process for drying a composition comprising an alkali metal salt of a compound of general formula (I) RRN&#x2014;CHR&#x2014;COOM or formula (II) RRN&#x2014;CHRCHR&#x2014;COOM, in particular N,N-dimethyl glycinate salt, and the use thereof. In the process, the composition, in particular the N,N-di methyl glycinate salt, is dried by feeding the composition into a fluidized bed dryer and subjecting the composition to a heat treatment by contacting the composition in the fluidized bed dryer with a drying gas stream, and during the heat treatment a solution or dispersion of the composition is sprayed onto at least a portion of the composition present in the fluidized bed dryer, or alternatively or in addition the composition, in particular N,N-dimethyl glycinate salt, is fed into a fluidized bed dryer and subjected to heat treatment in the fluidized bed dryer by contacting the composition with a drying gas stream, and the temperature of the composition in the fluidized bed during the heat treatment does not exceed 50&#xb0; C.

Process for drying N,N-dimethyl glycinate salte

A process for the preparation of N-(dialkylaminoalkyl)-carbamic acid esters, in particular (propyl N-[3-(dimethylamino)propyl] carbamate) comprising an oxidative carbonylation reaction of a compound of general structure (II) wherein each of Rand R, equal to or different from each other, are independently selected from an alkyl group having 1 to 10 carbon atoms, which is optionally substituted by at least one halogen atom, an aryl group or an aralkyl group; Ris selected from an alkyl group having 1 to 36 carbon atoms, which is optionally substituted by at least one halogen atom, an aryl group or an aralkyl group; each of R', R&#x2033; and R, equal to or different from each other, are independently selected from H, an alkyl group having 1 to 10 carbon atoms, which is optionally substituted by at least one halogen atom, an aryl group or an aralkyl group; and n is an integer in the range from 1 to 8, with a hydroxyl compound of general formula (III), R&#x2014;OH (III) and in the presence of a catalyst system.

Process for the preparation of carbamates

Disclosed is a process for the production of choline hydroxide includes reacting at a temperature above 30.0&#xb0; C. ethylene oxide, trimethylamine, and water in the presence of an aqueous medium in such amounts as to form a diluted choline hydroxide solution having a choline hydroxide concentration of less than 40 wt % and removing at least a portion of the aqueous medium from the diluted choline hydroxide solution to form a concentrated aqueous choline hydroxide solution having a choline hydroxide concentration which is at least 1.05 times the choline hydroxide concentration of the diluted choline hydroxide solution. The process allows for large scale, continuous production of concentrated aqueous choline hydroxide solutions of good quality under economically advantaged consumption factors for ethylene oxide.

Process for choline hydroxide

A continuous process for the production of choline hydroxide includes reacting ethylene oxide, trimethylamine, and water in a reaction zone to form a reaction mixture and extracting heat from the reaction mixture. Subsequently, phase separation of the reaction mixture is induced to obtain a choline hydroxide phase and an organic liquid phase comprising trimethylamine. A choline hydroxide solution (e.g., at a concentration of about 40% to 50% by weight, based on total weight of the choline hydroxide solution) is obtained from the choline hydroxide phase.

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Sint-Adries, Belgium

Dieter Ulrichts