中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

16 records (took 0.022 seconds)

    2.
    发明专利
    未知

    公开(公告)号：DE2836518A1

    公开(公告)日：1980-03-06

    申请号：DE2836518

    申请日：1978-08-21

    Applicant: BASF AG

    Inventor： PLATZ ROLF DIPL CHEM DR ,  KUMMER RUDOLF DIPL CHEM DR ,  SCHNEIDER HEINZ-WALTER DIPL CH

    IPC: B01J31/00 ,  C07B61/00 ,  C07C67/38 ,  C07C69/44 ,  C07C69/533

    Abstract: Multistep process for the preparation of butanedicarboxylic acid by the hydrogenation of carbon monoxide under pressure in the presence of a cobalt carbonyl catalyst, the improvement of heating at a temperature of 250 DEG to 350 DEG C. under superatmospheric pressure the resulting aqueous solution of cobalt carbonyl hydride that has been extracted with butadiene or with mixtures thereof before using in a subsequent step of the multistep process.

    7.
    发明专利
    未知

    公开(公告)号：DE2713195A1

    公开(公告)日：1978-10-05

    申请号：DE2713195

    申请日：1977-03-25

    Applicant: BASF AG

    Inventor： KUMMER RUDOLF DIPL CHEM DR ,  SCHNEIDER HEINZ-WALTER DIPL CH ,  PLATZ ROLF DIPL CHEM DR ,  MAGNUSSEN PETER DIPL CHEM DR ,  WEISS FRANZ-JOSEF DIPL CHEM DR

    IPC: C07C69/44 ,  B01J31/00 ,  C07B61/00 ,  C07C67/38 ,  C07C69/34 ,  C07C69/52

    Abstract: A process for the manufacture of butanedicarboxylic acid esters, wherein (A) AN AQUEOUS COBALT SALT SOLUTION IS TREATED, AT FROM 50 DEG TO 200 DEG C. and under a pressure of from 50 to 500 bars, 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 WITH A HYDROCARBON MIXTURE CONTAINING BUTADIENE 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 AN EXCESS OF AN ALKANOL OF 1 TO 4 CARBON ATOMS IN THE PRESENCE OF FROM 0.5 TO 2 MOLES, PER MOLE OF BUTADIENE, OF A TERTIARY NITROGEN BASE HAVING A PKa of from 3 to 11, at from 80 DEG to 150 DEG C. under a pressure of from 300 to 2,000 bars, and (D) THE RESULTING REACTION MIXTURE IS FREED FROM THE TERTIARY NITROGEN BASE CONTAINED THEREIN, EXCEPT FOR FROM 0.1 TO 0.3 MOLE PER MOLE OF PENTENOIC ACID ESTER, AND FROM EXCESS HYDROCARBONS, THE PENTENOIC ACID ESTER REMAINING IN THE REACTION MIXTURE IS REACTED WITH CARBON MONOXIDE AND AN EXCESS OF AN ALKANOL OF 1 TO 4 CARBON ATOMS AT FROM 140 DEG TO 200 DEG C. and under pressures of from 100 to 400 bars in the presence of the amounts of cobalt carbonyl and tertiary nitrogen base contained in the reaction mixture, and excess alkanol and free nitrogen base are then distilled off, and (E) THE REACTION MIXTURE WHICH REMAINS, AND WHICH CONTAINS COBALT CATALYST, THE BUTANEDICARBOXYLIC ACID ESTER AND BY-PRODUCTS IS TREATED WITH AN OXIDIZING AGENT IN AN AQUEOUS ACID MEDIUM AND THE MIXTURE IS SEPARATED INTO AN ORGANIC PHASE, FROM WHICH THE BUTANEDICARBOXYLIC ACID ESTER IS ISOLATED BY DISTILLATION, AND INTO AN AQUEOUS PHASE CONTAINING COBALT SALTS.

    10.
    发明专利
    未知

    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).

Patent Agency Ranking