Abstract: The invention relates to a method for producing cyclopentanone. Said method comprises the step of reacting a mixture (G1), which contains at least cyclopentene, with a mixture (G2), which contains at least dinitrogen monoxide. The reaction is carried out in at least one reactor (R1) having channels with a diameter in the range of 0.1 mm to 50 mm, the reactor comprising at least two zones (Z1) and (Z2) having channels with different diameters and the diameters of the channels of zone (Z1) being smaller than the diameter of the channels of zone (Z2).
Type:
Application
Filed:
May 27, 2008
Publication date:
July 15, 2010
Applicant:
BASF SE Patents, Trademarks and Licences
Inventors:
Joaquim Henrique Teles, Mathieu Chabanas, Thomas Genger, Beatrice Rossler
Abstract: The present invention relates to a process for the industrial preparation of a diamine starting from a corresponding alkenyl nitrile comprising at least one C—C double bond, which comprises the steps (a) reaction of the alkenyl nitrile with a corresponding monoamine in a first reactor so that the monoamine adds exothermically onto the at least one double bond to form an aminoalkyl nitrile, with the monoamine and water being charged initially and the alkenyl nitrile being fed in; (b) evaporation of unreacted alkenyl nitrile and monoamine to increase the concentration of the aminoalkyl nitrile product in the bottoms of the first reactor; (c) transfer of the aminoalkyl nitrile bottom product from step (b) to a second reactor; (d) batchwise catalytic hydrogenation of the aminoalkyl nitrile transferred in step (c) to the diamine in the second reactor, with each batch being obtained by initially charging a catalyst suitable for the hydrogenation of nitriles to amines and also water, the desired diamine and a bas
Type:
Application
Filed:
January 6, 2010
Publication date:
April 29, 2010
Applicant:
BASF SE Patents, Trademarks and Licences
Inventors:
Martin Ernst, Steffen Oehlenschläger, Frank Kuhnke, Karl-Heinz Roß, Roland Deeg, Johann-Peter Melder