公开(公告)号：DE4219758A1

公开(公告)日：1993-12-23

申请号：DE4219758

申请日：1992-06-17

Applicant: BASF AG

Inventor： SEELIGER URSULA DR ,  MUELLER WOLFGANG DR ,  HABERMANN WOLFGANG ,  HUBER GUNTHER ,  HEIMANN FRANK DR ,  VOS HARTWIG DR ,  SIEGEL HARDO DR

IPC: B01D61/44 ,  C07C51/02 ,  C07C55/14 ,  C25B3/00 ,  C07C55/02

Abstract: The invention concerns the electrochemical preparation of dicarboxylic acids by subjecting an aqueous solution containing essentially the alkali-metal salt of a dicarboxylic acid of the general formula (I): HOOC-(CH2)n-COOH, in which n may be an integer from 1 to 8, or mixtures of such dicarboxylic acids, to an electrochemical treatment.

公开(公告)号：DE4415887A1

公开(公告)日：1995-06-01

申请号：DE4415887

申请日：1994-05-05

Applicant: BASF AG

Inventor： RANG HARALD DR ,  GOETZ NORBERT DR ,  HARREUS ALBRECHT DR ,  BORCHERS DIRK DR ,  MAYWALD VOLKER DR ,  HEIMANN FRANK DR ,  BUSCHULTE THOMAS DR ,  HARTMANN HORST

IPC: B01J23/02 ,  B01J31/02 ,  C07B61/00 ,  C07C239/20 ,  C07C249/12 ,  C07C251/54 ,  C07C309/66 ,  C07C309/04

Abstract: A process is disclosed for producing isomer mixtures from O-phenoxyalkylhydroxyl amines Ia: H2N-O-CH2-CH(R )-O-Ar and Ib: H2N-O-CH(R )-CH2-O-Ar (wherein R represents alkyl, Ar where appropriate a substituted phenyl) and the corresponding salt mixtures. This process involves the following steps: (a) an isomer mixture of O-(2-hydroxyethyl)-oximes (IIa) and (IIb) (in which R is an alkyl and R is an alkyl or alkoxy, or R and R together with the common C atom form a 5-7 member ring) is converted by reaction with a sulphonyl halogenide of formula (III): Hal-SO2-R (wherein R represents an organic group and Hal is a halogen) in the presence of a base to form the corresponding sulphonate mixture of (IVa) and (IVb); (b) this sulphonate mixture is reacted in the presence of a base with a phenol of formula (V): HO-Ar to produce a mixture of O-phenoxyalkyloximes of general formulae (VIa) and (VIb); (c) the mixture is hydrolysed in the presence of an acid and, if required, (d) the O-phenoxyalkylhydroxyl amines (Ia) and (Ib) are released from the resulting salts using a mineral base. The O-phenoxyalkylhydroxyl amines (Ia/Ib) and their precursors (VIa/VIb) are important intermediate products for plant protective agents and drugs.

公开(公告)号：HU225876B1

公开(公告)日：2007-11-28

申请号：HU0200621

申请日：2000-02-28

Applicant: BASF AG

Inventor： HEIMANN FRANK DR ,  PESCHEL WERNER ,  BARTENBACH BERND ,  HARTMANN HORST ,  KEIL MICHAEL DR ,  WAHL JOSEF

IPC: B01D3/14 ,  C07C239/20 ,  B01D3/20

Abstract: The present invention relates to a process for the continuous preparation of methoxyamine hydrochloride by cleavage of acetone oxime methyl ether by means of hydrogen chloride and water, wherein the cleavage is carried out in a reaction column having less than 20 theoretical plates and the amount taken off at the top is set to at least 30% of the amount of feed.

公开(公告)号：DE4219757A1

公开(公告)日：1993-12-23

申请号：DE4219757

申请日：1992-06-17

Applicant: BASF AG

Inventor： SEELIGER URSULA DR ,  MUELLER WOLFGANG DR ,  HEIMANN FRANK DR ,  HUBER GUENTHER ,  HABERMANN WOLFGANG ,  VOSS HARTWIG DR ,  SIEGEL HARDO DR

IPC: B01D61/44 ,  B01D61/52 ,  C07C27/00 ,  C07C51/02 ,  C07C51/06 ,  C07C51/09 ,  C07C55/14 ,  C07C209/62 ,  C07C211/12 ,  C08G69/48 ,  C25B3/00 ,  C07C55/02 ,  C07C211/09

Abstract: Disclosed is a method for the simultaneous preparation of dicarboxylic acids and diamines from (a) polymers based on polyamides made by reacting dicarboxylic acids or derivatives thereof with diamines or (b) compounds containing essentially such polymers by decomposing these polymers into their constituent monomers by treating the polymers or compounds with a base and subsequently converting electrochemically the dicarboxylic-acid salts thus produced into the corresponding dicarboxylic acids and bases.

公开(公告)号：DE4219756A1

公开(公告)日：1993-12-23

申请号：DE4219756

申请日：1992-06-17

Applicant: BASF AG

Inventor： SEELIGER URSULA DR ,  MUELLER WOLFGANG DR ,  HEIMANN FRANK DR ,  HUBER GUNTHER ,  HABERMANN WOLFGANG ,  VOSS HARTWIG DR ,  SIEGEL HARDO DR

IPC: B01D61/44 ,  B01D61/52 ,  C07C51/06 ,  C07C51/09 ,  C07C51/43 ,  C07C55/14 ,  C07C209/62 ,  C07C211/12 ,  C08G69/28 ,  C08G69/48 ,  C08J11/16 ,  C25B3/00 ,  C07C55/02 ,  C07C211/09

Abstract: Disclosed is a method for the simultaneous preparation of dicarboxylic acids and diamines from (a) polymers based on polyamides made by reacting dicarboxylic acids or derivatives thereof with diamines or (b) compounds containing essentially such polymers, by decomposing these polymers into their constituent monomers by treating the polymers or compounds with a base in an alcoholic solution and subsequently converting electrochemically the dicarboxylic-acid salts thus produced into the corresponding dicarboxylic acids and bases.