31.
    发明专利
    未知

    公开(公告)号:DE3702483A1

    公开(公告)日:1988-08-11

    申请号:DE3702483

    申请日:1987-01-28

    Applicant: BASF AG

    Abstract: Ketones of the formula where R1 to R3 are each hydrogen and R1 to R4 are each alkyl of 1 to 12 carbon atoms, cycloalkyl of 4 to 8 carbon atoms, aryl, aralkyl or alkylaryl, which each in turn may be substituted, or R1 and R2 and R3 together with the carbon atoms to which they are bonded form a cycloalkane, are prepared by reacting ketones of the formula where one of R1, R2, R3 and R5 is hydroxyl, alkoxy or carboxyl while the remaining R1 to R4 have the abovementioned meanings, with hydrogen in the presence of acid catalysts supporting one or more hydrogenation components, zeolites of the pentasil type being particularly suitable.

    34.
    发明专利
    未知

    公开(公告)号:DE3536263A1

    公开(公告)日:1987-04-16

    申请号:DE3536263

    申请日:1985-10-11

    Applicant: BASF AG

    Abstract: An aqueous glyoxal solution is decolorized by a process in which the said solution is passed over granulated active carbon which is arranged in a fixed bed and whose differential pore radius distribution has a maximum of from 10 to 100 A, the Peclet number being from 500 to 5000, the decolorized glyoxal solution is discharged, the active carbon bed is then regenerated by treating it with an aqueous solution of an alkaline agent and then with an aqueous acid, and further glyoxal solution to be decolorized is passed over the active carbon regenerated in this manner.

    39.
    发明专利
    未知

    公开(公告)号:DE4424710A1

    公开(公告)日:1996-01-18

    申请号:DE4424710

    申请日:1994-07-13

    Applicant: BASF AG

    Abstract: The invention concerns a process for carbonylating olefins with carbon monoxide in the presence of water, an alcohol or a carboxylic acid and a halogen-free catalyst. Nickel or a nickel compound and at least one of the metals from the group comprising chromium, molybdenum, tungsten, rhenium, ruthenium, osmium, rhodium, iridium, palladium, platinum, silver and gold or a combination of these metals is used as the catalyst.

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