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    122.
    发明专利
    未知

    公开(公告)号：DE3719933A1

    公开(公告)日：1988-12-29

    申请号：DE3719933

    申请日：1987-06-15

    Applicant: BASF AG

    Inventor： BERTLEFF WERNER DR ,  FISCHER ROLF DR ,  KUMMER RUDOLF DR ,  MERGER FRANZ DR ,  SCHNEIDER HEINZ-WALTER DR

    IPC: C07B61/00 ,  C07C67/313 ,  C07C67/333 ,  C07C67/38 ,  C07C69/533 ,  C07C69/66 ,  C07C69/67 ,  C07C69/716

    Abstract: The preparation of 5-formylvaleric esters comprises the following steps… a) hydroformylation of pentenoic esters by reaction with carbon monoxide and hydrogen at elevated temperature and pressure in the presence of carbonyl complexes of metals from Group VIII of the Periodic Table with the formation of a mixture of 5-, 4- and 3-formylvaleric esters… b) separation of 5-formylvaleric esters from the mixture thus obtained of 5-, 4- and 3-formylvaleric esters, leaving a mixture substantially comprising 4- and 3-formylvaleric esters behind… c) cleavage of the mixture substantially comprising 4- and 3-formylvaleric esters to give pentenoic esters at a temperature of 50 to 400 DEG C in the presence of catalysts and… d) recycling of the pentenoic esters into step a.

    PROCESS FOR THE PREPARATION OF SUCCINIC-ACID DIESTERS
    127.
    发明专利
    PROCESS FOR THE PREPARATION OF SUCCINIC-ACID DIESTERS 未知

    公开(公告)号：DE3462246D1

    公开(公告)日：1987-03-05

    申请号：DE3462246

    申请日：1984-09-03

    Applicant: BASF AG

    Inventor： REUVERS JOHANNES G DR ,  RICHTER WOLFGANG DR ,  KUMMER RUDOLF DR

    IPC: C07C67/38 ,  C07C69/40

    Abstract: A process for the preparation of succinic acid diesters by carbonylation of acrylic acid esters in the presence of alcohols, using a cobalt carbonyl complex as the catalyst and a heterocyclic nitrogen base as the promoter, at 80 DEG -200 DEG C. and under a carbon monoxide pressure of 60-300 bar, wherein the reaction is carried out in the presence of not less than 20% by weight, based on the amount of all the liquid constituents of the reaction mixture, of an inert liquid and the concentration of the acrylic acid ester is kept, for the predominant part of the reaction time, at below 15% by weight, again based on the amount of all liquid constituents.

    PROCESS FOR CONTINUOUS HYDROFORMYLATION OF OLEFINIC UNSATURATED COMPOUNDS
    130.
    发明专利
    PROCESS FOR CONTINUOUS HYDROFORMYLATION OF OLEFINIC UNSATURATED COMPOUNDS 未知

    公开(公告)号：DE3460571D1

    公开(公告)日：1986-10-09

    申请号：DE3460571

    申请日：1984-01-11

    Applicant: BASF AG

    Inventor： KUMMER RUDOLF DR ,  RICHTER WOLFGANG DR ,  SCHWIRTEN KURT DR ,  STOPS PETER

    IPC: B01J31/00 ,  B01J31/22 ,  B01J31/24 ,  C07B61/00 ,  C07C45/00 ,  C07C45/50 ,  C07C47/02 ,  C07C67/00

    Abstract: Olefinically unsaturated compounds are continuously hydroformylated under from 2 to 30 bar and at from 80 DEG to 130 DEG C. using, as a catalyst, a rhodium complex which contains, as ligands, sparingly volatile compounds of the general formula I I where A is phosphorus, arsenic, antimony or bismuth and R1, R2 and R3 are each organic radicals, by a method in which the hydroformylation mixture consisting of liquid and gaseous components is removed from the reactor and is subjected to relatively high temperatures and/or relatively low pressures for a short time in a devolatilization column, the mixture at the same time being separated into a gas phase and a liquid phase, the gas phase is separated into the product and the recycle gas in a separator, and the recycle gas and the liquid phase from the devolatilization column are recycled to the reactor.

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