公开(公告)号：MY134372A

公开(公告)日：2007-12-31

申请号：MYPI20032753

申请日：2003-07-22

Applicant: BASF AG

Inventor： BASLER PETER DR ,  GOEBBEL HANS-GEORG DR ,  TELES JOAQUIM HENRIQUE DR ,  RUDOLF PETER DR

IPC: B01D3/32 ,  B01D3/14 ,  B01D3/42 ,  C07B41/00 ,  C07C7/04 ,  C07D301/12 ,  C07D301/32

Abstract: THE INVENTION RELATES TO A CONTINUOUSLY OPERATED PROCESS FOR THE PURIFICATION BY DISTILLATION OF THE OXIRANE FORMED IN THE OXIRANE SYNTHESIS BY REACTION OF A HYDROPEROXIDE WITH AN ORGANIC COMPOUND, WHEREIN THE CRUDE OXIRANE IS SEPARATED IN A DIVIDING WALL COLUMN INTO LOW-, INTERMEDIATE- AND HIGH-BOILING FRACTIONS AND THE OXIRANE IS TAKEN OFF AS INTERMEDIATE BOILER AT THE SIDE OFFTAKE IN A CONCENTRATION OF AT LEAST 99.9%.

公开(公告)号：DE19704617A1

公开(公告)日：1998-08-13

申请号：DE19704617

申请日：1997-02-07

Applicant: BASF AG

Inventor： LUYKEN HERMANN ,  REHFINGER ALWIN DR ,  BASLER PETER DR ,  VOIT GUIDO DR ,  FISCHER ROLF DR ,  MERGER MARTIN DR ,  RUST HARALD

IPC: C07C209/86 ,  C07C211/12 ,  C07C211/36 ,  C07C209/84

Abstract: Separation of 2-aminomethylcyclopentyl amine (AMCPA) from a mixture also containing hexamethylene diamine (HMD) is carried out by distillation at 1-300 mbar.

公开(公告)号：DE19500222A1

公开(公告)日：1996-07-11

申请号：DE19500222

申请日：1995-01-05

Applicant: BASF AG

Inventor： ACHHAMMER GUENTHER DR ,  BASLER PETER DR ,  FISCHER ROLF DR ,  FUCHS EBERHARD DR ,  LUYKEN HERMANN ,  SCHNURR WERNER DR ,  WITZEL TOM DR

IPC: C07D201/02 ,  C07C209/48 ,  C07C211/12 ,  C07D201/08 ,  C07D223/10 ,  C07D233/10

Abstract: The invention concerns the simultaneous preparation of caprolactam and hexamethylene diamine from adipodinitrile, by the following steps: (a) the adipodinitrile is partially hydrogenated, producing a mixture substantially containing 6-aminocapronitrile, hexamethylene diamine, ammonia, adipodinitrile and hexamethylene imine (= "the mixture"); (b) the mixture obtained in step (a) is distilled, producing ammonia, as the forerunnings, and a residue I, in the presence of a compound A which is inert in the distillation conditions, the ammonia not being separated totally; (c) the residue I, substantially containing "the mixture", inert compound A and ammonia, the ammonia content being less than that of the mixture used in step (b), is subjected to a second distillation, producing a mixture of the inert compound A and ammonia, as the forerunnings, and a residue II; (d) the base II, substantially containing "the mixture" and inert compound A, is subjected to distillation in a third column, producing the inert compound A, as the forerunnings, and a residue III; (e) the base III, substantially containing "the mixture" and optionally an inert compound B, is subjected to distillation in a fourth column, producing forerunnings KP1, which substantially contain hexamethylene imine, optionally inert compound B and hexamethylene diamine, and a residue IV; (f) the forerunnings KP1 are subjected in a fifth column to distillation, producing forerunnings KP2, which substantially contain hexamethylene imine and optionally inert compound B, and a residue V, which substantially contains hexamethylene diamine with a degree of purity of at least 95 %, the forerunnings KP2 being fed to the third column or optionally only partially fed to the third column, and the rest being discarded; and (g) the residue IV, substantially containing 6-aminocapronitrile and adipodinitrile, is subjected in a sixth column to distillation, producing 6-aminocapronitrile with a degree of purity of at least 95 %, as forerunnings, and adiponitrile in the residue. The resultant 6-aminocapronitrile is cyclized to form caprolactam.