Process for the improved manufacture of 2- ethylhexanol

Details Process for the improved manufacture of 2- ethylhexanol Process for the improved manufacture of 2- ethylhexanol

C - Chemistry, Metallurgy

07

C

202/84, 260/638.

C07C 31/02 (2006.01) C07C 29/141 (2006.01) C07C 29/17 (2006.01) C07C 29/80 (2006.01) C07C 29/88 (2006.01) C07C 45/74 (2006.01)

Patent

CA 1088103

ABSTRACT OF THE DISCLOSURE An improved process for the manufacture of 2-ethylhexanol wherein n-butyraldehyde is subjected to aldol condensation, the resultant aldol condensation product is catalytically hydrogenated in a hydrogenation stage and the hydrogenation product is subjected to two separate multiple stage distillations to separate, in the first case the first runnings a fraction containing the main amount of 2-ethylehexanol, and the residue. In the second case this distillation residue is separated into a 2-ethylhexanol fraction and a distillation residue. The improvement resides in cracking the dis- tillation residue by heating it at 200 to 250°C whereby to obtain crackedproducts comprising n-butanal, 2-ethylhexanol, 2-ethylhexanol, and/or 2- ethylhexanol together with non-cracked higher boiling substances. The cracked products are separated from the non-cracked products and the cracked products are recycled to the hydrogenation stage.

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