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    62.
    发明专利
    未知

    公开(公告)号：DE59100830D1

    公开(公告)日：1994-02-24

    申请号：DE59100830

    申请日：1991-03-20

    Applicant: BASF AG

    Inventor： MERGER FRANZ DR ,  PRIESTER CLAUS-ULRICH DR ,  WITZEL TOM DR ,  KOPPENHOEFER GERHARD DR ,  HARDER WOLFGANG DR

    IPC: B01J21/04 ,  B01J21/06 ,  B01J23/46 ,  B01J27/18 ,  C07B61/00 ,  C07C209/00 ,  C07C209/26 ,  C07C209/48 ,  C07C209/52 ,  C07C211/36

    Abstract: Process for the preparation of 3-aminomethyl-3,5,5-trimethylcyclohexylamine from 3-cyano-3,5,5-trimethylcyclohexanone by carrying out the following steps in two reaction spaces spatially separated from one another: a) reacting the 3-cyano-3,5,5-trimethylcyclohexanone in a first reaction space with excess ammonia over acid metal oxide catalysts at temperatures of 20 to 150 DEG C and pressures of 15 to 500 bar and b) hydrogenating the reaction products formed in a second reaction space with hydrogen in the presence of excess ammonia over cobalt-, nickel-, ruthenium- and/or other noble metal-containing catalysts which may contain basic components or are present on neutral or basic supports at temperatures of 60 to 150 DEG C and pressures of 50 to 300 bar.

    68.
    发明专利
    未知

    公开(公告)号：DE58902282D1

    公开(公告)日：1992-10-22

    申请号：DE58902282

    申请日：1989-07-21

    Applicant: BASF AG

    Inventor： MAERKL ROBERT DR ,  HARDER WOLFGANG DR

    IPC: B01J31/20 ,  B01J31/40 ,  C07B61/00 ,  C07C67/38 ,  C07C69/533

    Abstract: Alkyl pentenoates are prepared by (a) reacting butadiene or a butadiene-containing hydrocarbon mixture with carbon monoxide and an alkanol in the presence of a tertiary aromatic heterocyclic nitrogen base and a cobalt carbonyl catalyst at from 80 DEG to 160 DEG C. under from 100 to 1,000 bar to obtain a reaction mixture which contains alkyl pentenoate, C6-diester, tertiary nitrogen base, alkanol, butadiene, hydrocarbon and by-product, (b) substantially removing from the reaction mixture obtained any excess hydrocarbon, nitrogen base, alkanol and alkyl pentenoate by distillation to obtain a residue which contains cobalt carbonyl catalyst, (c) bringing the residue which contains cobalt carbonyl catalyst into contact with a mixture of carbon monoxide and hydrogen at elevated temperature and elevated pressure, and (d) recycling the residue which contains cobalt carbonyl catalyst into alkyl pentenoate synthesis stage (a).

    70.
    发明专利
    未知

    公开(公告)号：DE3926709A1

    公开(公告)日：1991-02-14

    申请号：DE3926709

    申请日：1989-08-12

    Applicant: BASF AG

    Inventor： JOERG KLAUS DR ,  MUELLER FRANZ-JOSEF DR ,  HARDER WOLFGANG DR ,  KUMMER RUDOLF DR

    IPC: B01J27/122 ,  B01J31/02 ,  C07B61/00 ,  C07C68/00 ,  C07C69/96

    Abstract: A process for the continuous synthesis of dialkyl carbonates of the general formula I (I) in which R denotes C1-C4-alkyl, by reaction of C1-C4-alkanols with carbon monoxide and oxygen at elevated temperature and pressure and in the presence of a copper-containing catalyst dissolved or suspended in the reaction medium, wherein a) a gas stream containing carbon monoxide and oxygen is bubbled through the alkanol/catalyst mixture present in the reactor at a rate of from 1 to 100 liters per hours per gram of copper present in the reactor, part of which gas stream reacts with the alkanol to form dialkyl carbonate and water, which components are continuously entrained, together with alkanol, as a gaseous mixture, from the reaction mixture by means of the remaining, unreacted portion of the carbon monoxide/oxygen gas stream, whereupon b) the resulting gaseous mixture is separated, in a separator, into gaseous and liquid phases, the gaseous phase being recycled to the reactor if desired, and c) the liquid phase, which essentially consists of dialkyl carbonate, water and alkanol, is separated into its components, the dialkyl carbonate being isolated and the alkanol, if desired, recycled to the reactor, and d) the liquid in the reactor is replenished by adding fresh or recycled alkanol at the rate at which the alkanol is consumed and discharged.

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