公开(公告)号：DE3107731A1

公开(公告)日：1982-09-16

申请号：DE3107731

申请日：1981-02-28

Applicant: BASF AG

Inventor： HARTMANN HORST ,  HOCHSTEIN WALDHELM DIPL CHEM D ,  KAIBEL GERD DIPL ING ,  MUELLER FRANZ-JOSEF DIPL CHEM

IPC: C07C69/14 ,  C07C27/00 ,  C07C27/26 ,  C07C27/34 ,  C07C45/00 ,  C07C45/49 ,  C07C45/80 ,  C07C47/06 ,  C07C47/09 ,  C07C51/00 ,  C07C51/12 ,  C07C51/48 ,  C07C51/56 ,  C07C51/573 ,  C07C53/08 ,  C07C53/12 ,  C07C67/00 ,  C07C67/58

Abstract: 1. A process for separating organic iodine compounds from carbonylation products of methanol, methyl acetate and dimethyl ether or from mixtures of such carbonylation products, wherein the iodine compounds are removed by liquid phase extraction with a non-aromatic hydrocarbon.

公开(公告)号：DE3045105A1

公开(公告)日：1982-07-01

申请号：DE3045105

申请日：1980-11-29

Applicant: BASF AG

Inventor： HARTMANN HORST ,  HOCHSTEIN WALDHELM DIPL CHEM D ,  KAIBEL GERD DIPL ING ,  MUELLER FRANZ-JOSEF DIPL CHEM

IPC: C07C17/386 ,  C07C17/00 ,  C07C19/07 ,  C07C45/00 ,  C07C45/84 ,  C07C47/09 ,  C07C67/00 ,  C07C47/06

公开(公告)号：DE3019765A1

公开(公告)日：1981-12-10

申请号：DE3019765

申请日：1980-05-23

Applicant: BASF AG

Inventor： HOCHSTEIN WALDHELM DIPL CHEM D ,  KAIBEL GERD DIPL ING ,  MUELLER FRANZ-JOSEF DIPL CHEM ,  HARTMANN HORST

IPC: A01N31/04 ,  C07C27/00 ,  C07C27/26 ,  C07C27/32 ,  C07C29/80 ,  C07C29/88 ,  C07C31/04 ,  C07C45/00 ,  C07C45/49 ,  C07C45/82 ,  C07C45/85 ,  C07C47/06 ,  C07C47/09 ,  C07C67/00 ,  C07C69/14 ,  C07C27/28

Abstract: A process is provided wherein acetaldehyde and methanol are obtained from reaction mixtures which result from the homologization of methanol and which in addition to acetaldehyde essentially contain acetaldehyde dimethylacetal, methanol, methyl acetate and water.

公开(公告)号：DE3019767A1

公开(公告)日：1981-12-03

申请号：DE3019767

申请日：1980-05-23

Applicant: BASF AG

Inventor： BOTT KASPAR DIPL CHEM DR ,  KAIBEL GERD DIPL ING ,  HOFFMANN HERWIG DIPL CHEM DR ,  IRNICH RUDOLF DIPL CHEM DR ,  SCHAEFER EBERHARD

IPC: C07C67/03 ,  B01D3/36 ,  C07C67/02 ,  C07C69/14

Abstract: A process for the preparation of acetic acid esters CH3-CO-O-R1 (I, R1=an organic radical other than methyl and ethyl) by alkali-catalyzed trans-esterification of an acetic acid ester CH3-CO-O-R2 (II, R2=methyl or ethyl) with an alcohol R1-OH (III), accompanied by elimination of the alcohol R2-OH (IV), wherein (a) the trans-esterification reaction is carried out in the middle section KM of a distillation column K, the alcohol III being fed as liquid into the upper zone and the ester II into the lower zone of KM, (b) the alkaline catalyst is introduced into the upper part KU of K, (c) the alcohol IV, or a mixture of IV and the ester II, is taken off the top of the column, (d) the mixture obtained from (c) (unless the alcohol IV alone is obtained) is separated in the column section KU or in a stripper column KS into IV and the azeotrope of II and IV, and the latter is recycled to the lower zone of KM, (e) the ester I is taken as vapor or liquid from the lower zone of the lower section KL of K and (f) the catalyst is either removed, or recycled to KU, in a conventional manner.

公开(公告)号：DE2928944A1

公开(公告)日：1981-02-12

申请号：DE2928944

申请日：1979-07-18

Applicant: BASF AG

Inventor： NISSEN AXEL DIPL CHEM DR ,  KAIBEL GERD DIPL ING ,  REBAFKA WALTER DIPL CHEM DR ,  WOERZ OTTO DIPL CHEM DR ,  ARNOLD LOTHAR DIPL CHEM DR ,  BRAUN MANFRED

IPC: C07C49/20 ,  B01J31/14 ,  C07C45/00 ,  C07C45/67 ,  C07C45/68 ,  C07C49/203 ,  C07C67/00

Abstract: An improved process for the preparation of higher unsaturated ketones, such as geranylacetone and farnesylacetone, by reacting a beta , gamma -unsaturated alcohol and an alkyl acetoacetate at an elevated temperature in the presence of an organic aluminum compound, with elimination, and removal, of the alcohol derived from the alkyl acetoacetate in a reactor system carrying a fractionating column. The improvement in the purity, yield, and especially space-time yield of the product is achieved by starting from an alcohol having a higher boiling point than that of the alkyl acetoacetate used, carrying out the reaction in the presence of a small amount of an inert liquid which has a boiling point between that of the alkyl acetoacetate and the alcohol to be eliminated therefrom, and ensuring that the temperature at the bottom of the fractionating column is only slightly higher than the boiling point of the added liquid, under the prevailing pressure.

公开(公告)号：DE2706684A1

公开(公告)日：1978-08-24

申请号：DE2706684

申请日：1977-02-17

Applicant: BASF AG

Inventor： HIMMELE WALTER DIPL CHEM DR ,  FISCHER KARL DIPL CHEM DR ,  KAIBEL GERD DIPL ING ,  SCHNEIDER KURT DIPL CHEM DR ,  IRNICH RUDOLF DIPL CHEM DR

IPC: B01D3/40 ,  C07C68/06 ,  C07C68/08 ,  C07C69/00 ,  C07C69/96

Abstract: Dimethyl carbonate is obtained pure, from its solutions in methanol, by extractive distillation carried out with a temperature of from 60 DEG C. at the top to 250 DEG C. at the bottom of the column and employing, as the extractant, an aprotic organic liquid which is substantially inert toward dimethyl carbonate, boils at above 100 DEG C. at standard pressure, is miscible with dimethyl carbonate in all proportions and has a dielectric constant epsilon of from 4 to 90 and a dipole moment mu of from 1.5 to 5 Debye.