公开(公告)号：DE2933581A1

公开(公告)日：1981-03-26

申请号：DE2933581

申请日：1979-08-18

Applicant: BASF AG

Inventor： KUMMER RUDOLF DIPL CHEM DR ,  WEISS FRANZ-JOSEF DIPL CHEM DR ,  SCHNEIDER HEINZ-WALTER DIPL CH ,  TAGLIEBER VOLKER DIPL CHEM DR

IPC: B01J31/00 ,  C07B61/00 ,  C07C67/38 ,  C07C69/533 ,  C07C69/52

公开(公告)号：DE3206662A1

公开(公告)日：1983-09-01

申请号：DE3206662

申请日：1982-02-25

Applicant: BASF AG

Inventor： PERNER JOHANNES DIPL CHEM DR ,  REITZ HEINRICH DIPL CHEM DR ,  SCHNEIDER HEINZ-WALTER DIPL CH ,  TAGLIEBER VOLKER DIPL CHEM DR

IPC: C11D3/20 ,  A47L15/00

Abstract: Process for mechanical dishwashing using a plurality of cleaning and rinsing steps, employing alkoxylated compounds with active hydrogen atoms, solubilisers, carboxylic acids and, where appropriate, monohydric or polyhydric alcohols for the rinsing, in which a rinsing liquor which contains as acid a mixture of - based on the weight of the mixture - 70 to 90% C1-C1-alkylglutaric acid and 30 to 10% C1-C3-alkylsuccinic acid is employed.

公开(公告)号：DE2950100A1

公开(公告)日：1981-06-19

申请号：DE2950100

申请日：1979-12-13

Applicant: BASF AG

Inventor： KUMMER RUDOLF DIPL CHEM DR ,  TAGLIEBER VOLKER DIPL CHEM DR

IPC: C07C67/02 ,  C07C67/03 ,  C07C69/34

Abstract: In the prodn. of esters (I) of mono- or polybasic carboxylic acids by ester interchange, using acid ion exchanger as esterification catalyst, ester interchange is carried out in the presence of 0.01-10 wt.% water, w.r.t. the amt. of liquid phase in the reaction mixt. Practically quantitative yields of (I) are obtd. corresp. to an increase in yield of 10-40% age points. In an example, a homogeneous soln. of 348 g (2 mole) dimethyl adipate, 624 g (4.8 mole) 2-ethylhexan-1-ol and 4.8 g water (0.5 wt.% of the liquid phase) was heated 2 h under reflux in the presence of 10 g acid ion exchanger (sulphonated crosslinked polystyrene). Then the water and excess 2-ethylhexanol were distilled off at normal pressure and 65 deg.C for the first 4 h and then at 10 mbar and 80 deg.C. Di(2-ethylhex-l-yl) adipate was obtd. in 99.7% yield. If no water was added, the yield of ester was only 64.8%.

公开(公告)号：DE2949073A1

公开(公告)日：1981-06-11

申请号：DE2949073

申请日：1979-12-06

Applicant: BASF AG

Inventor： KUMMER RUDOLF DIPL CHEM DR ,  TAGLIEBER VOLKER DIPL CHEM DR ,  WEISS FRANZ-JOSEF DIPL CHEM DR ,  SCHNEIDER HEINZ-WALTER DIPL CH

IPC: C07C67/48 ,  C07C67/38 ,  C07C67/56 ,  C07C67/60 ,  C07C69/44 ,  C07C69/00

Abstract: A process for purifying carboxylic acid esters which have been obtained by reacting olefinically unsaturated compounds with carbon monoxide and alkanols and which contain aldehydes or acetals, wherein the said esters are treated with a strongly acidic agent, with or without addition of water.

公开(公告)号：DE2924785A1

公开(公告)日：1981-01-29

申请号：DE2924785

申请日：1979-06-20

Applicant: BASF AG

Inventor： KUMMER RUDOLF DIPL CHEM DR ,  SCHNEIDER HEINZ-WALTER DIPL CH ,  TAGLIEBER VOLKER DIPL CHEM DR ,  WEISS FRANZ-JOSEF DIPL CHEM DR

IPC: C07C67/08 ,  B01J31/00 ,  B01J31/20 ,  C07B61/00 ,  C07C67/38 ,  C07C67/58 ,  C07C69/34 ,  C07C69/44 ,  C07C69/533

Abstract: A process for the preparation of butanedicarboxylic acid esters, wherein (a) an aqueous cobalt salt solution is treated with excess carbon monoxide and hydrogen in the presence of active charcoal laden with cobalt carbonyl, (b) the resulting aqueous solution of cobalt carbonyl hydride is extracted with butadiene or a butadiene containing hydrocarbon mixture and the aqueous phase is separated off, (c) the butadiene, or butadiene/hydrocarbon mixture, containing cobalt carbonyl hydride, cobalt carbonyl and butenyl-cobalt tricarbonyl, is reacted with carbon monoxide and excess C1-C4-alkanol in the presence of a tertiary nitrogen base, (d) the resulting reaction mixture is freed from the tertiary nitrogen base contained therein, down to a content of from 0.1 to 0.3 mole per mole of pentenoic acid ester, and from excess hydrocarbons, and the pentenoic acid ester remaining in the reaction mixture is reacted with carbon monoxide and excess C1-C4-alkanol in the presence of the cobalt carbonyl and tertiary nitrogen base contained in the reaction mixture, (e) the reaction mixture is treated with an oxidizing agent in the presence of the aqueous acid solution which has been separated off in stage (b), and the mixture is separated into an organic phase, from which butanedicarboxylic acid esters are isolated by distillation, and an aqueous phase, and (f) the aqueous phase is extracted with water-immiscible solvents, the phases are separated, and the resulting aqueous phase is freed from alkanols and tertiary nitrogen base and is recycled to stage (a).