公开(公告)号：DE19513839A1

公开(公告)日：1996-10-17

申请号：DE19513839

申请日：1995-04-12

Applicant: BASF AG

Inventor： FREDE MARKUS DR ,  ROSKE ECKHARD ,  PUETTER HERMANN DR

IPC: C09B7/02 ,  D06P1/22 ,  C25D3/04 ,  C09B7/00

Abstract: A process for the electrochemical reduction of vat dyes in aqueous solution in the presence of a mediator system in which carbon or graphite felt is used as the cathode material.

公开(公告)号：DE3866434D1

公开(公告)日：1992-01-09

申请号：DE3866434

申请日：1988-06-08

Applicant: BASF AG

Inventor： PAUL AXEL DR ,  PETER TONNE DR ,  ROSKE ECKHARD ,  SIEGEL HARDO DR

IPC: C07C229/08 ,  C07C67/00 ,  C07C227/00 ,  C07C227/08 ,  C07C227/32

Abstract: In a new process for the prodn. of D- or L-alanine of high enantiomeric purity, an optically active chloropropionic acid of high enantiomeric purity is reacted with ammonia or ammonia-yielding cpds. at 50-110 deg. C in water or water/alcohol mixt. The pref. ammonia-yielding cpd. is urotropin (hexamethylene tetramine), although the reaction is pref. carried out with a mixt. of ammonia and urotropin Ammonia and ammonia-yielding cpd. are pref. used in an amt. of at least 2 mol per mol chloropropionic acid. The reaction is pref. carried out at 50-90 frg. C and pH 6-9.

公开(公告)号：DE3544549A1

公开(公告)日：1986-07-10

申请号：DE3544549

申请日：1985-12-17

Applicant: BASF AG

Inventor： COLBERG HORST DR ,  HERRMANN MANFRED DR ,  MAYER UDO DR ,  PUETTER HERMANN DR ,  ROSKE ECKHARD

IPC: C09B67/54 ,  B01D13/02 ,  C09B62/04

Abstract: The invention relates to a process for the preparation of largely salt-free aqueous solutions of ionic dyestuffs by electrodialysis, which is characterised in that the flow rate of diluate (= solution to be treated) is chosen to be less than that of the concentrate.

公开(公告)号：DE102004045029A1

公开(公告)日：2006-03-16

申请号：DE102004045029

申请日：2004-09-15

Applicant: BASF AG

Inventor： ROSKE ECKHARD ,  PUETTER HERMANN ,  RICHTER INGO

IPC: C25B3/23 ,  C07C43/32

Abstract: Preparation of glyoxalic acid alkyl ester dialkyl acetal (I) comprises electrochemical oxidation of glyoxaldialkylacetal in the presence of alkyl alcohol and ionogenic halogenide.

公开(公告)号：DE3524331A1

公开(公告)日：1987-01-08

申请号：DE3524331

申请日：1985-07-08

Applicant: BASF AG

Inventor： LENZ HANS-HEINRICH DR ,  ROSKE ECKHARD ,  BAER KARL DR

IPC: B01J23/02 ,  B01J27/20 ,  B01J37/00 ,  C07B61/00 ,  C07C27/00 ,  C07C37/11 ,  C07C37/16 ,  C07C39/06 ,  C07C67/00 ,  B01J23/04 ,  B01J21/10 ,  B01J21/18

Abstract: The proposed catalyst for the gas-phase alkylation of phenols is based on magnesium oxide, contains up to 0.4% by weight of alkali metal oxide and is mechanically stabilized with from 1 to 8% by weight, based on the total weight of the catalyst, of graphite, molded and then heated.

公开(公告)号：GB2170212A

公开(公告)日：1986-07-30

申请号：GB8531376

申请日：1985-12-20

Applicant: BASF AG

Inventor： COLBERG HORST ,  MAYER UDO ,  ROSKE ECKHARD ,  HERRMANN MANFRED ,  PUETTER HERMANN

IPC: C09B67/32 ,  C09B67/54 ,  B01D13/02 ,  C09B67/26

Abstract: Substantially salt-free aqueous solutions of ionic dyes are prepared by electrodialysis by a method in which the flow rate of the diluate 2 (=the solution being treated) is lower than that of the concentrate 1, preferably more than 15% lower. The method is particularly suitable for reactive dyes.

公开(公告)号：DE2625075A1

公开(公告)日：1977-12-22

申请号：DE2625075

申请日：1976-06-04

Applicant: BASF AG

Inventor： HERBIG KLAUS DIPL CHEM DR ,  ROSKE ECKHARD ,  STOCKBURGER DIETER DR ,  BRUNOLD ANDREAS DIPL ING ,  DIETRICH HANS JUERGEN DIPL ING

IPC: C07C20060101 ,  C07C263/10 ,  C07C265/04 ,  C07C271/02 ,  C07C119/042 ,  C07C118/02 ,  C07C125/03

Abstract: Prepn. of carbamoyl chlorides and isocyanates comprises reacting a solid primary amine salt with COCl2 at high temp. The amine salt is pref. a hydrochloride. The reaction temp. is pref. 10-70 degrees C. below the m.pt. of the salt (generally 145-250 degrees C.). The particle size of the salt is pref. 1-500 (esp. 2-50) mu. The reactor can be a rotating tube, a reactor equipped with stirrer paddles, or an fluidised bed reactor in which the support material is pref. Al2O3. The carbamoyl chloride produced can be sepd. from the gaseous reaction products by quenching in an inert solvent; the resulting solnl. can then by distd. to form and isolate the isocyanate. The products are useful as intermediates for biologically active cpds., plant protection agents, polyurethanes, etc. The process is esp. useful for preparing aliphatic diisocyanates, which can be converted to light-stable polyurethanes. The process gives high yields (e.g. 50-98%) and is suitable for use on an industrial scale.

公开(公告)号：AT69804T

公开(公告)日：1991-12-15

申请号：AT88109087

申请日：1988-06-08

Applicant: BASF AG

Inventor： PAUL AXEL DR ,  PETER TONNE DR ,  ROSKE ECKHARD ,  SIEGEL HARDO DR

IPC: C07C229/08 ,  C07C67/00 ,  C07C227/00 ,  C07C227/08 ,  C07C227/32

公开(公告)号：DE3564076D1

公开(公告)日：1988-09-08

申请号：DE3564076

申请日：1985-12-13

Applicant: BASF AG

Inventor： PUETTER HERMANN DR ,  ROSKE ECKHARD

IPC: B01D61/44 ,  B01D61/54 ,  C07H1/06 ,  C07H3/02 ,  C09B67/54 ,  B01D13/02

Abstract: Aqueous solutions of organic compounds which contain salts are concentrated by electrodialysis with simultaneous reduction of the salt content of these solutions, the concentrate used being an aqueous salt solution which is not less than 1 molar.

公开(公告)号：DE3619562A1

公开(公告)日：1987-12-17

申请号：DE3619562

申请日：1986-06-11

Applicant: BASF AG

Inventor： ROSKE ECKHARD ,  FRITZ GERHARD DR

IPC: A61K31/495 ,  C07D241/08