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    1.
    发明专利
    未知

    公开(公告)号：DE50304495D1

    公开(公告)日：2006-09-14

    申请号：DE50304495

    申请日：2003-07-23

    Applicant: BASF AG

    Inventor： BASSLER PETER ,  GOEBBEL HANS-GEORG ,  TELES HENRIQUE ,  RUDOLF PETER

    IPC: B01D3/32 ,  B01D3/14 ,  B01D3/42 ,  C07B41/00 ,  C07C7/04 ,  C07D301/12 ,  C07D301/32

    Abstract: The invention relates to a continuously operated process for the purification by distillation of the oxirane formed in the oxirane synthesis by reaction of a hydroperoxide with an organic compound, wherein the crude oxirane is separated in a dividing wall column into low-, intermediate- and high-boiling fractions and the oxirane is taken off as intermediate boiler at the side offtake in a concentration of at least 99.9%.

    2.
    发明专利
    未知

    公开(公告)号：DE59709989D1

    公开(公告)日：2003-06-05

    申请号：DE59709989

    申请日：1997-12-04

    Applicant: BASF AG

    Inventor： VOGELBACHER JOSEF ,  KEIL MICHAEL ,  KLINTZ RALF ,  WAHL JOSEPH ,  WINGERT HORST ,  KOENIG HARTMANN ,  RACK MICHAEL ,  GOETZ ROLAND ,  TELES HENRIQUE

    IPC: C07D231/20 ,  C07D231/22

    Abstract: PCT No. PCT/EP97/06780 Sec. 371 Date Jun. 14, 1999 Sec. 102(e) Date Jun. 14, 1999 PCT Filed Dec. 4, 1997 PCT Pub. No. WO98/27062 PCT Pub. Date Jun. 25, 1998A process is described for preparing N-substituted 3-hydroxypyrazoles of the formula I where R1 is unsubstituted or substituted alkyl, alkenyl, alkynyl, cycloalkyl, aryl or heteroaryl and R2, R3 are hydrogen, cyano, halogen and unsubstituted or substituted alkyl, alkenyl, alkynyl, cycloalkyl, aryl or heteroaryl, by oxidizing a corresponding pyrazolidin-3-one.

    3.
    发明专利
    未知

    公开(公告)号：DE59803528D1

    公开(公告)日：2002-05-02

    申请号：DE59803528

    申请日：1998-06-10

    Applicant: BASF AG

    Inventor： TELES HENRIQUE ,  RIEBER NORBERT ,  BREUER KLAUS ,  DEMUTH DIRK ,  HIBST HARTMUT ,  ETZRODT HEINZ ,  RHEUDE UDO

    IPC: B01J21/16 ,  C07B61/00 ,  C07C41/08 ,  C07C41/28 ,  C07C43/15 ,  C07C43/16

    Abstract: Enol ethers of the formula Iwhere R1 is an aliphatic, cycloaliphatic, araliphatic, aromatic or heterocyclic radical which may carry further substituents which do not react with acetylenes or allenes, and the radicals R, independently of one another, are hydrogen or aliphatic, cycloaliphatic, araliphatic, aromatic or heterocyclic radicals, which may be bonded to one another to form a ring, and m is 0 or 1, are prepared by reacting an acetal or ketal of the formula IIwith an acetylene or allene of the formula III or IVwhere R and R1 have the abovementioned meanings, in the gas phase at elevated temperatures in the presence of a zinc- or cadmium- and silicon- and oxygen-containing heterogeneous catalyst.

    4.
    发明专利
    未知

    公开(公告)号：DE50204792D1

    公开(公告)日：2005-12-08

    申请号：DE50204792

    申请日：2002-07-18

    Applicant: BASF AG

    Inventor： TELES HENRIQUE ,  REHFINGER ALWIN ,  BERG ANNE ,  RUDOLF PETER ,  RIEBER NORBERT ,  BASSLER PETER

    IPC: C07D301/12

    Abstract: A process for preparing propylene oxide comprises at least the following steps: (a) propene is reacted with a hydroperoxide in a solvent in the presence of a zeolite catalyst to give a mixture (M 0 ), where the mixture (M 0 ) comprises propylene oxide, solvent, unreacted propene, unreacted hydroperoxide and oxygen, (b) the propylene oxide is separated from the mixture (M 0 ) so as to give a mixture (M 1 ) which comprises unreacted propene and oxygen, (c) the mixture (M 1 ) is brought into contact with a liquid medium comprising at least a solvent to give the mixtures (M 2 ) and (M 3 ), where the mixture (M 3 ) comprises part of the unreacted propene and oxygen and the mixture (M 2 ) comprises solvent and residual propene, and the mixture (M 3 ) which has been separated off and comprises unreacted propene and oxygen has a ratio of oxygen to propene such that the mixture (M 3 ) is not ignitable, and the mixture (M 2 ) is fed to at least one reaction of propene with hydroperoxide.

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