45.
    发明专利
    未知

    公开(公告)号:DE59709160D1

    公开(公告)日:2003-02-20

    申请号:DE59709160

    申请日:1997-06-24

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP97/03303 Sec. 371 Date Jan. 7, 1999 Sec. 102(e) Date Jan. 7, 1999 PCT Filed Jun. 24, 1997 PCT Pub. No. WO98/01438 PCT Pub. Date Jan. 15, 1998The disclosure is a process for preparing a phthalide of the general formula I where R1, R2, R3 and R4 are each independently of the others hydrogen, C1-C4-alkyl or C1-C4-alkoxy, by hydrogenation of a phthalic anhydride of the general formula II where R1, R2, R3 and R4 are each as defined above, with the aid of a hydrogenation catalyst, which comprises performing the hydrogenation with the aid of a nickel catalyst doped with metals of subgroup 1, subgroup 6 and/or subgroup 7 of the Periodic Table.

    46.
    发明专利
    未知

    公开(公告)号:DE10134470A1

    公开(公告)日:2003-01-30

    申请号:DE10134470

    申请日:2001-07-16

    Applicant: BASF AG

    Abstract: Production of hydrogen peroxide by reaction of hydrogen and oxygen is effected over a stationary noble metal-containing catalyst such that the liquid stream containing water and/or a 1-4 carbon alcohol and the simultaneously-flowing hydrogen- and oxygen-containing gas stream have apparent flow directions which are not parallel to each other. An Independent claim is also included for apparatus for production of hydrogen peroxide (H2O2) by reaction of hydrogen (H2) and oxygen (O2) comprising: (a) a cylindrical reactor (1) with an axial gas feed (2); (b) a reaction space (3) at least partly surrounding gas feed (2) circumferentially and limited by a separator wall (6) spaced from the outer mantle (15), the feed (2) and wall (6) having gas-permeable openings at the top of reaction space (3); (c) an outlet (14) for removal of gases from the reactor, this outlet communicating with the annular space (4) between the mantle (15) and wall (6); (d) devices (10, 11) for impacting an upper cross-sectional surface (17) of reaction space (3) with liquid; and (e) an outlet (12) for liquid flowing down through the lower cross-sectional surface (18) of reaction space (3).

    Method of producing organic hydrogen peroxide solutions

    公开(公告)号:AU2002254986A1

    公开(公告)日:2002-10-28

    申请号:AU2002254986

    申请日:2002-04-11

    Applicant: BASF AG

    Abstract: In a continuous process for preparing hydrogen peroxide solution in a medium comprising a water-miscible organic solvent by reaction of hydrogen and oxygen in the presence of an inert gas, the gas stream is circulated and fresh hydrogen and oxygen are introduced in the form of pure gases only at a rate corresponding to that at which they are consumed. The solution prepared in this way can be used for the epoxidation of olefins.

    METHOD OF PRODUCING ORGANIC HYDROGEN PEROXIDE SOLUTIONS

    公开(公告)号:CA2443203A1

    公开(公告)日:2002-10-24

    申请号:CA2443203

    申请日:2002-04-11

    Applicant: BASF AG

    Abstract: The invention relates to a continuous method for producing a hydrogen peroxi de solution in a medium that comprises a water-miscible organic solvent, by reacting hydrogen and oxygen in the presence of an inert gas, the gas flow being circulated and the hydrogen and oxygen only being supplemented in the form of pure gases as they are consumed. The invention further relates to th e use of the solution so produced in the epoxidation of olefins.

Patent Agency Ranking