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    MANUFACTURE OF BUTANEDICARBOXYLIC ACID ESTERS
    22.
    发明专利
    MANUFACTURE OF BUTANEDICARBOXYLIC ACID ESTERS 未知

    公开(公告)号：CA1115290A

    公开(公告)日：1981-12-29

    申请号：CA310829

    申请日：1978-09-07

    Applicant: BASF AG

    Inventor： KUMMER RUDOLF ,  SCHNEIDER HEINZ-WALTER ,  WEISS FRANZ-JOSEF

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

    Abstract: of the disclosure: A process for the manufacture of butanedicarboxylic acid esters, whereina) an aqueous cobalt salt solution is treated with carbon monoxide and hydrogen in the presence of active charcoal,b) the resulting aqueous solution is extracted with butadiene or with a hydrocarbon mixture containing butadiene,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 a tertiary nitrogen base,d) the tertiary nitrogen bases contained in the resulting reaction mixture are removed from the latter to the extent of leaving from 0.1 to 0.3 mole per mole of pentenoic acid ester, excess hydrocarbons are also removed, the pentenoic acid ester remaining in the reaction mixture is reacted with carbon monoxide and an alkanol of 1 to 4 carbon atoms, and thereafter excess alkanol and free nitrogen base are distilled off ande) the residual reaction mixture, containing cobalt catalysts, butanedicarboxylic acids 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 butanedicarboxylic acid esters are isolated by distillation, and an aqueous phase containing cobalt salts, which phase is extracted with a water-immiscible solvent.

    CONTINUOUS MANUFACTURE OF SOLUTIONS OF COBALT CARBONYL AND COBALT CARBONYL HYDRIDE IN ORGANIC SOLVENTS
    23.
    发明专利
    CONTINUOUS MANUFACTURE OF SOLUTIONS OF COBALT CARBONYL AND COBALT CARBONYL HYDRIDE IN ORGANIC SOLVENTS 未知

    公开(公告)号：CA1025426A

    公开(公告)日：1978-01-31

    申请号：CA203453

    申请日：1974-06-26

    Applicant: BASF AG

    Inventor： STROHMEYER MAX ,  NIENBURG HANS J ,  KUMMER RUDOLF ,  HOHENSCHUTZ HEINZ

    IPC: C01G51/02 ,  C07C45/50 ,  C07C45/85

    Abstract: Solutions of cobalt carbonyl and cobalt carbonyl hydride in organic solvents are prepared by treating aqueous solutions of cobalt salts with carbon monoxide and hydrogen at a temperature of from 50 DEG to 200 DEG C and a pressure of from 50 to 500 atmospheres in the presence of solvents which are sparingly water-miscible or are water-immiscible and which have a content of cobalt carbonyl, cobalt carbonyl hydride or mixtures thereof, the starting materials and the organic solvents being passed cocurrently through a zone in which a turbulent flow is maintained. The improvement includes using n-butanol as solvent. Solutions of cobalt carbonyl and cobalt carbonyl hydride in n-butanol are suitable as catalyst solutions for oxo syntheses.

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