12.
    发明专利
    未知

    公开(公告)号:DE59208022D1

    公开(公告)日:1997-03-20

    申请号:DE59208022

    申请日:1992-11-03

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP92/02514 Sec. 371 Date May 6, 1994 Sec. 102(e) Date May 6, 1994 PCT Filed Nov. 3, 1992 PCT Pub. No. WO93/10098 PCT Pub. Date May 27, 1993.Process for the preparation of methylpyrazoles from diacetylene and hydrazines in which the diacetylene is removed from cracked gas by absorption and is then reacted with hydrazines.

    14.
    发明专利
    未知

    公开(公告)号:DE102006009838A1

    公开(公告)日:2007-09-06

    申请号:DE102006009838

    申请日:2006-03-01

    Applicant: BASF AG

    Abstract: A process for catalytically hydrogenating methylolalkanals of the general formula in which R1 and R2 are each independently a further methylol group or an alkyl group having from 1 to 22 carbon atoms or an aryl or aralkyl group having from 6 to 33 carbon atoms, in the liquid phase over a hydrogenation catalyst, which comprises setting a pH of from 7.0 to 9.0 in the hydrogenation effluent by adding at least one tertiary amine, an inorganic base or an inorganic or organic acid to the hydrogenation feed.

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