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    121.
    发明专利
    未知

    公开(公告)号：DE10159825A1

    公开(公告)日：2003-06-18

    申请号：DE10159825

    申请日：2001-12-06

    Applicant: BASF AG

    Inventor： HAMMON ULRICH ,  SCHROEDER JUERGEN

    IPC: B01D53/18 ,  B01D3/20 ,  B01D3/24 ,  C07C51/25 ,  C07C51/44 ,  C07C57/07 ,  B01D3/14 ,  B01D3/32

    Abstract: The invention relates to a riser base (1), which is provided for a column used for thermally treating a liquid and from which liquid is completely drained via a drainage tube (6) located at the edge of the riser base (1). The riser base (1) comprises one or more drainage channels (5) that slope(s) toward the drainage tube (6), and the riser base (1) slopes toward the drainage channel(s) (5).

    122.
    发明专利
    未知

    公开(公告)号：DE10159823A1

    公开(公告)日：2003-06-18

    申请号：DE10159823

    申请日：2001-12-06

    Applicant: BASF AG

    Inventor： HAMMON ULRICH ,  SCHROEDER JUERGEN

    IPC: F16B2/04 ,  B01D3/14 ,  B01D3/32 ,  F16B2/02 ,  C07C57/07

    Abstract: The invention relates to a clamp (1) for releasably connecting a column plate (4) to a supporting ring (5) in a column, comprising a bolt (2) and a bolt bottom part (3) that is connected to said bolt (2), wherein the bolt bottom part (3) has at least one opening (8) through which a liquid located inside the column can flow out.

    123.
    发明专利
    未知

    公开(公告)号：AT229544T

    公开(公告)日：2002-12-15

    申请号：AT00929453

    申请日：2000-04-27

    Applicant: BASF AG

    Inventor： AICHINGER HEINRICH ,  NESTLER GERHARD ,  SCHROEDER JUERGEN

    IPC: C08F2/01 ,  C08F2/02 ,  C08F2/38 ,  C08F2/42 ,  C08F20/00

    Abstract: Free radical polymerizations immediately terminated by a process comprising the addition of an inhibitor solution which contains phenothiazine and at least 50% (w/w) N-alkylpyrrolidone to a system undergoing free radical polymerization, wherein the inhibitor solution also contains p-methoxyphenol (MEHQ).

    METHOD OF OBTAINING N-SUBSTITUTED PYRAZOLES
    124.
    发明专利
    METHOD OF OBTAINING N-SUBSTITUTED PYRAZOLES 未知

    公开(公告)号：PL183813B1

    公开(公告)日：2002-07-31

    申请号：PL32211496

    申请日：1996-02-27

    Applicant: BASF AG

    Inventor： MERKLE HANS R ,  FRETSCHNER ERICH ,  SCHROEDER JUERGEN

    IPC: C07D231/12 ,  C07D521/00

    Abstract: PCT No. PCT/EP96/00790 Sec. 371 Date Aug. 20, 1997 Sec. 102(e) Date Aug. 20, 1997 PCT Filed Feb. 27, 1996 PCT Pub. No. WO96/27589 PCT Pub. Date Sep. 12, 1996A process for the preparation of an N-alkyl- or N-phenylalkyl-substituted pyrazole I by reacting the corresponding N-unsubstituted pyrazole II with an alcohol III of the formula R1-OH where R1 is the same alkyl or phenylalkyl group to be added to the unsubstituted nitrogen group -NH- of the pyrazole reactant. Both of the reactants, i.e. the pyrazole II and alcohol III compounds, are catalytically reacted in the liquid phase in a molar ratio of from 0.001:1 to 1:1, at temperatures of 50 DEG -400 DEG C. and under a subatmosheric pressure of from 0.8 bar up to a superatmospheric pressure of 250 bar. The catalyst required for this liquid phase reaction is selected as being at least one or more non-heterogeneous acid catalysts, their alkyl esters or their acid anhydrides.

    126.
    发明专利
    未知

    公开(公告)号：DE10026644A1

    公开(公告)日：2001-12-06

    申请号：DE10026644

    申请日：2000-05-29

    Applicant: BASF AG

    Inventor： NESTLER GERHARD ,  SCHROEDER JUERGEN

    IPC: C07C57/075 ,  C07C67/03 ,  C07C213/06 ,  C07C219/08 ,  C07D211/94 ,  C07F7/28 ,  C07B41/12 ,  C07B63/04 ,  C07C67/62 ,  C07C213/10 ,  C07C219/06 ,  C07F7/00 ,  C07F9/00

    Abstract: The invention relates to a method for the production of an ester of an unsaturated carboxylic acid by reaction of an ester formed from the unsaturated carboxylic acid and a C1-C4 alkanol with an alcohol R OH in the presence of a transesterification catalyst, where R = a C4-C20 alkyl group, a C5-C7-cycloalkyl group, a phenyl-C1-C4 alkyl group, or a C2-C12 alkyl group, substituted by at least one NR R group, or 1 to 3 hydroxy groups or C1-C4 alkoxy groups, or interrupted by one or more oxygen heteroatoms, whereby the group R = independently of each other, C1-C6 alkyl, or, together with the nitrogen atom, form a 5-7 membered heterocyclic ring which can optionally contain a further nitrogen or oxygen atom. At least one metal alkanoate is used as transesterification catalyst with at least one OR group, where R = a 4-(2,2,6,6-tetraalkylpiperidine-N-oxide). The invention further relates to a metal alcoholate with at least one OR group, where R = a 4-(2,2,6,6-tetraalkylpiperidine-N-oxide) and the use thereof as a transesterification catalyst.

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