公开(公告)号：DE3361347D1

公开(公告)日：1986-01-09

申请号：DE3361347

申请日：1983-07-22

Applicant: BASF AG

Inventor： PUETTER HERMANN DR

IPC: C07C51/377 ,  C07C59/115 ,  C25B3/25 ,  C25B3/04 ,  C07C103/167 ,  C07C121/36

Abstract: 1. A process for the preparation of dichlorolactic acid or the nitrile or amide thereof, wherein a compound of the formula : see diagramm : EP0100498,P5,F1 where R is an NC, HOOC or H2 NCO group, is reduced electrochemically.

公开(公告)号：DE3260007D1

公开(公告)日：1983-12-01

申请号：DE3260007

申请日：1982-04-21

Applicant: BASF AG

Inventor： PUETTER HERMANN DR

IPC: C07C225/34 ,  C07C97/24 ,  C07C85/11 ,  C07C101/80

公开(公告)号：DE3063707D1

公开(公告)日：1983-07-14

申请号：DE3063707

申请日：1980-12-22

Applicant: BASF AG

Inventor： PUETTER HERMANN DR ,  BEWERT WOLFGANG DR

IPC: C07C46/04 ,  C07C50/10

公开(公告)号：BR9812248A

公开(公告)日：2000-07-18

申请号：BR9812248

申请日：1998-09-18

Applicant: BASF AG

Inventor： PUETTER HERMANN DR ,  HANNEBAUM HEINZ ,  BAUMANN DIETER

IPC: C07D307/88 ,  C25B3/25

Abstract: Phthalides in as-obtained phthalide synthesis reaction mixtures are recovered in pure form by(a) distilling compounds having a boiling point below the boiling point of the phthalide from the reaction mixture, provided such compounds are present in the reaction mixture, to obtain a crude phthalide as bottom product,(b) crystallizing the phthalide from a melt of the crude phthalide.

公开(公告)号：DE19618854A1

公开(公告)日：1997-11-13

申请号：DE19618854

申请日：1996-05-10

Applicant: BASF AG

Inventor： PUETTER HERMANN DR ,  HANNEBAUM HEINZ

IPC: C07D307/88 ,  C25B3/25 ,  C25B3/10 ,  C25B3/04 ,  C07C69/82 ,  C07C63/16 ,  C07C233/18 ,  C07C69/06 ,  C07C69/67 ,  C07C47/228 ,  C07D307/36 ,  C07D307/60

Abstract: A process is disclosed for preparing phthalides by cathodic reduction of phthalic acid or phthalic acid derivatives, in which the carboxylic acid units may be substituted by units which can be derived by a condensation reaction from carboxylic acid units and in which one or several hydrogen atoms of the o-phenylene unit of the phthalic acid may be substituted by inert radicals. This process is characterised in that the reduction is carried out in an organic solvent which contains less than 50 wt % water and in a non-divided electrolytic cell.

公开(公告)号：DE19533214A1

公开(公告)日：1997-03-13

申请号：DE19533214

申请日：1995-09-08

Applicant: BASF AG

Inventor： PUETTER HERMANN DR ,  HUBER GUENTHER ,  SPISKE LUISE DR ,  STARK HANS DR ,  SCHLAEFER DIETER DR ,  PFORR GERHARD DR

IPC: C25C3/02 ,  C25B1/00 ,  C25C3/08

Abstract: Proposed is an electrolytic method for the production of sodium and aluminium chloride in an electrolytic cell with an aluminium anode and a sodium cathode separated from each other by a sodium-ion-conducting solid electrolyte. In the anode region, molten electrolyte containing essentially sodium tetrachloroaluminate is electrolysed, the aluminium chloride produced being evaporated out of the cell and the sodium produced being tapped off from the cathode region.

公开(公告)号：DE3482623D1

公开(公告)日：1990-08-09

申请号：DE3482623

申请日：1984-04-17

Applicant: BASF AG

Inventor： PUETTER HERMANN DR ,  NAARMANN HERBERT DR ,  PENZIEN KLAUS DR

IPC: H01M8/18 ,  B01D57/02 ,  B01D61/44 ,  B01D61/48 ,  B01D69/02 ,  B01D71/58 ,  B01J47/12 ,  C02F1/42 ,  C08J5/22 ,  C08L45/00 ,  C25B13/08 ,  G01N27/416 ,  H01M2/16 ,  H01M8/02 ,  H01M10/36

Abstract: Electrochemical processes for selectively separating ions in aqueous soltuion are carried out using apparatuses in which two or more different spaces are separated by means of ion exchange membranes, and the membrane material consists of electrochemically prepared pyrrole polymers. Such ion exchange membranes are used as proton and anion exchange membranes.

公开(公告)号：DE3423762A1

公开(公告)日：1986-01-09

申请号：DE3423762

申请日：1984-06-28

Applicant: BASF AG

Inventor： STECKHAN EBERHARD PROF DR ,  WOLF REINHARD ,  PUETTER HERMANN DR

IPC: C07C17/00 ,  C07C21/19 ,  C07C22/04 ,  C07C29/00 ,  C07C29/58 ,  C07C45/61 ,  C07C45/64 ,  C07C45/65 ,  C07C49/687 ,  C07C49/697 ,  C07C49/80 ,  C07C51/00 ,  C07C57/54 ,  C07C67/27 ,  C25B3/25 ,  C07C21/24 ,  C07C33/42 ,  C07C57/52 ,  C07C69/63 ,  C07C35/48 ,  C07C33/44 ,  C25B3/04

Abstract: Chloro-olefins which contain a group of the formula II where Y is chlorine or hydrogen, which are prepared by a process in which a trichloromethyl compound which contains a group of the general formula I where X is hydrogen or an organic radical, is reduced with a chromium(II) salt in an aqueous medium.

公开(公告)号：DE3419724A1

公开(公告)日：1985-11-28

申请号：DE3419724

申请日：1984-05-26

Applicant: BASF AG

Inventor： PUETTER HERMANN DR ,  ROSKE ECKHARD ,  PANDER HANS JOACHIM

IPC: C25B3/00 ,  B01D61/44 ,  B01D61/50 ,  B01D61/54 ,  C07C237/00

公开(公告)号：DE3419723A1

公开(公告)日：1985-11-28

申请号：DE3419723

申请日：1984-05-26

Applicant: BASF AG

Inventor： PUETTER HERMANN DR ,  ROSKE ECKHARD ,  PANDER HANS JOACHIM

IPC: C07C255/26 ,  C07C121/453