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    METHOD FOR THE RECTIFYING SEPARATION OF FLUIDS CONTAINING (METH)ACRYL MONOMERS
    21.
    发明专利
    METHOD FOR THE RECTIFYING SEPARATION OF FLUIDS CONTAINING (METH)ACRYL MONOMERS 未知

    公开(公告)号：AU2003258504A1

    公开(公告)日：2004-01-23

    申请号：AU2003258504

    申请日：2003-07-02

    Applicant: BASF AG

    Inventor： HAMMON ULRICH ,  THIEL JOACHIM ,  SCHLIEPHAKE VOLKER ,  SCHRODER JURGEN

    IPC: B01D3/22 ,  C07C51/44

    Abstract: A process for rectificatively separating at least one (meth)acrylic monomer-containing fluid by feeding the fluid into a rectification column containing at least one sieve tray without a runoff segment, wherein an elementary cell is obtained from a number of centers of passages in a sieve tray, and the cell shifts regularly and repeatedly along its edges, the lengths of two shifting vectors being the lengths of the edges of the cell along which the shifting is effected; an arrangement of the centers is such that the positions of an ideal center and a real center are separated by

    24.
    发明专利
    未知

    公开(公告)号：ES2188543T3

    公开(公告)日：2003-07-01

    申请号：ES00929453

    申请日：2000-04-27

    Applicant: BASF AG

    Inventor： AICHINGER HEINRICH ,  NESTLER GERHARD ,  SCHRODER JURGEN

    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).

    Process for preparing n-substituted pyrazoles
    30.
    发明专利
    Process for preparing n-substituted pyrazoles 未知

    公开(公告)号：AU4941896A

    公开(公告)日：1996-09-23

    申请号：AU4941896

    申请日：1996-02-27

    Applicant: BASF AG

    Inventor： MERKLE HANS RUPERT ,  FRETSCHNER ERICH ,  SCHRODER JURGEN

    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.

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