15.
    发明专利
    未知

    公开(公告)号:DE19642553A1

    公开(公告)日:1998-04-16

    申请号:DE19642553

    申请日:1996-10-15

    Applicant: BASF AG

    Abstract: Preparation of N-hydroxyalkyl -substituted amino-alkynol derivatives of formula (I) involves reaction of an alkyne of formula R1-C IDENTICAL CH (II) with a 1-oxa-3-aza-heterocycloalkane of formula (III) over a heterogeneous catalyst comprising a compound of a first or second transition group metal. R1= H, alkyl, haloalkyl, cycloalkyl, aryl, alkoxy, alkoxyalkyl, hydroxyalkyl or -CR2R3-N(R4)-A-OH; R2-R4 = H, alkyl, haloalkyl, cycloalkyl, aryl, alkoxy, alkoxyalkyl or hydroxyalkyl; A = 2-5C alkylene (optionally substituted by one or more of alkyl, haloalkyl, aryl, alkoxy, hydroxy and hydroxyalkyl).

    16.
    发明专利
    未知

    公开(公告)号:DE19641707A1

    公开(公告)日:1998-04-16

    申请号:DE19641707

    申请日:1996-10-10

    Applicant: BASF AG

    Abstract: The invention concerns a process for preparing 1,4-butanediol by continuous catalytic hydrogenation of 1,4-butinediol in that 1,4-butinediol is reacted with hydrogen in the liquid continuous phase in the presence of a heterogeneous hydrogenation catalyst at temperatures of between 20 and 300 DEG C, a pressure of between 1 and 200 bar and values of the liquid-side mass transfer coefficients kLa, relative to the volume, of between 0.1 s and 1s , a) with a catalyst suspended in the reaction medium, wherein, when a packed bubble column is used, it is operated in the upwards mode and at a ratio of the amount of gas leaving the reaction vessel to the amount fed thereto of between 0.99:1 and 0.4:1, or b) is guided upwards in parallel flow through a fixed bed reactor operated in the circulating gas mode, the ratio between the amount of gas fed to the reaction vessel and the amount of gas leaving the latter being maintained between 0.99:1 and 0.4:1.

    19.
    发明专利
    未知

    公开(公告)号:DE19720606A1

    公开(公告)日:1998-12-10

    申请号:DE19720606

    申请日:1997-05-16

    Applicant: BASF AG

    Abstract: The invention relates to a method for producing alcohols containing cycloaliphatic groups by hydrogenating, in the presence of a catalyst, carboxylic acids having aromatic rings or anhydrides or esters thereof. According to said method, hydrogenation takes places in a single stage and the catalyst contains at least one element of the group comprising Pd, Ru and Pt as well as the element Re in metallic or oxidic form.

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