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    METHOD FOR PRODUCING PROPYLENE OXIDE
    36.
    发明专利
    METHOD FOR PRODUCING PROPYLENE OXIDE 未知

    公开(公告)号：MY138713A

    公开(公告)日：2009-07-31

    申请号：MYPI20022656

    申请日：2002-07-12

    Applicant: BASF AG

    Inventor： TELES JOAQUIM HENRIQUE DR ,  REHFINGER ALWIN DR ,  BERG ANNE ,  RUDOLF PETER DR ,  RIEBER NORBERT DR ,  BASLER PETER DR

    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 (M0), WHERE THE MIXTURE (M0) COMPRISES PROPYLENE OXIDE, SOLVENT, UNREACTED PROPENE, UNREACTED HYDROPEROXIDE AND OXYGEN. (B) THE PROPYLENE OXIDE IS SEPARATED FROM THE MIXTURE (M0) SO AS TO GIVE A MIXTURE (M1) WHICH COMPRISES UNREACTED PROPENE AND OXYGEN. (C) THE MIXTURE (MI) IS BROUGHT INTO CONTACT WITH A LIQUID MEDIUM COMPRISING AT LEAST A SOLVENT TO GIVE THE MIXTURES (M2) AND (M3), WHERE THE MIXTURE (M3) COMPRISES PART OF THE UNREACTED PROPENE AND OXYGEN AND THE MIXTURE (M2) COMPRISES SOLVENT AND RESIDUAL PROPENE, AND THE MIXTURE (M3) WHICH HAS BEEN SEPARATED OFF AND COMPRISES UNREACTED PROPENE AND OXYGEN HAS A RATIO OF OXYGEN TO PROPENE SUCH THAT THE MIXTURE (M3) IS NOT IGNITABLE, AND THE MIXTURE (M2) IS FED TO AT LEAST ONE REACTION OF PROPENE WITH HYDRO PEROXIDE.

    37.
    发明专利
    未知

    公开(公告)号：DE19726667A1

    公开(公告)日：1998-12-24

    申请号：DE19726667

    申请日：1997-06-23

    Applicant: BASF AG

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

    IPC: B01J21/16 ,  C07B61/00 ,  C07C41/08 ,  C07C41/28 ,  C07C43/15 ,  C07C43/16 ,  C07C43/14 ,  C07C43/162 ,  C07C43/166

    Abstract: The invention relates to a method for producing enol ethers of formula (I), in which R is an aliphatic, cycloaliphatic, araliphatic, aromatic or heterocyclic radical, which radicals can carry other substitutes that do not react with acetylenes or allenes; the R radicals are, independently of each other, hydrogen, or aliphatic, cycloaliphatic, araliphatic, aromatic or heterocyclic radicals, which can interconnect forming a ring; and m stands for 0 or 1. In this method, acetals or ketals of formula (II) are reacted with acetylenes or allenes of formula (III) or (IV), in which the R and R radicals have the aforementioned meanings. The reaction takes place in the gas phase, at high temperature, in the presence of a heterogeneous catalyst containing zinc or cadmium together with silicon and oxygen.

    38.
    发明专利
    未知

    公开(公告)号：DE19723949A1

    公开(公告)日：1998-12-10

    申请号：DE19723949

    申请日：1997-06-06

    Applicant: BASF AG

    Inventor： GROSCH GEORG HEINRICH DR ,  MUELLER ULRICH DR ,  WALCH ANDREAS DR ,  RIEBER NORBERT DR ,  HARDER WOLFGANG DR

    IPC: B01J29/90 ,  B01J38/12 ,  B01J38/20 ,  C07B41/00 ,  C07C29/48 ,  C07C45/27 ,  C07C51/265 ,  C07D301/12

    Abstract: The invention relates to a method for regenerating a zeolitic catalyst, comprising the following steps: (I) at least one partially deactivated catalyst is heated to a temperature ranging from 250 to 600 DEG C in an atmosphere containing less than 2 vol. % oxygen; (II) the catalyst is impinged upon by a gas flow at a temperature ranging from 250 to 800 DEG C, preferably 350 to 600 DEG C, said gas flow having an oxygen-delivering substance content or an oxygen content or a mixture of two or more thereof ranging from 0.1 to 4 vol. % and (III) the catalyst is impinged upon by a gas flow at a temperature ranging from 250 to 800 DEG C, preferably 350 to 600 DEG C, said gas flow having an oxygen-delivering substance content or an oxygen content or a mixture of two or more thereof ranging from over 4 to 100 vol. %.

    40.
    发明专利
    未知

    公开(公告)号：DE19503827A1

    公开(公告)日：1996-08-08

    申请号：DE19503827

    申请日：1995-02-06

    Applicant: BASF AG

    Inventor： RITTINGER STEFAN DR ,  RIEBER NORBERT DR ,  GOLD RANDALL EVAN DR ,  DRESSEL JUERGEN DR

    IPC: C05G3/90 ,  C07D231/12 ,  C07D231/16 ,  C09K17/14 ,  C09K101/00 ,  C05G3/08

    Abstract: Pyrazol derivatives having general formula (I) are disclosed, as well as their use as nitrification inhibitors. In said formula (I): residues R , R , R and R may be substituted once or twice by halogen and/or hydroxyl; the residues R , R and R stand for halogen, nitro, hydrogen, C1-C20-alkyl, C3-C8-cycloalkyl, C5-C20-aryl or alkyl aryl; and R may stand for (a) a residue R of the formula (II), in which R and R stand for hydrogen, C1-C20-alkyl optionally substituted once or twice by halogen and/or hydroxyl, a carboxyl group, a carboxymethyl group or a functional derivative of both latter groups, and R stands for a carboxyl residue or a carboxy-(C1-C3-alkyl) residue or for a functional derivative of said groups, or R may stand for (b) a residue R having the formula (III), in which R and R stand for hydrogen, C1-C20-alkyl, C2-C8-cycloalkyl, C5-C20-aryl or alkyl aryl, these residues being optionally substituted once or twice by halogen, and R stands for hydrogen or a poly-(C2-C4-alkylene oxide) residue whose terminal hydroxyl group may be etherified with an aliphatic C1-C10 alcohol or esterified with a C1-C10 carboxylic acid.

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