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    3.
    发明专利
    未知

    公开(公告)号：DE59607121D1

    公开(公告)日：2001-07-26

    申请号：DE59607121

    申请日：1996-08-30

    Applicant: BASF AG

    Inventor： HERMELING DR ,  HUGO RANDOLF ,  SIEGEL DR

    IPC: C07F9/02 ,  C07F9/53

    Abstract: A process for purifying tert. phosphine oxides of formula (R )(R )(R )P = O (I) in which R , R and R = 1-12 C alkyl, 5-8 FC cycloalkyl, aryl, 7-20 C aralkyl or 7-20 C alkylaryl, comprises reacting the (I) or a (I)-contg. mixt., opt. in an inert solvent, with an (in)organic acid at 0-150 degrees C and subsequently reacting the resulting salt with water or an (in)organic base. Pref. reaction with the acid is pref. carried out in an inert solvent such as aromatic hydrocarbons, aliphatic hydrocarbons, cycloaliphatic hydrocarbons or aromatic nitriles. Suitable acids are eg mineral acids such as HCl, HClO4, H2SO4 or H3PO4, Lewis acids such as BF3 or AlCl3, or organic acids such as acetic acid, formic acid or oxalic acid. The ratio acid to impure (I) is pref. 0.3 : 1 to 20 : 1, esp. 0.7 : 1 to 2 : 1. After crystallisation, the salt is recovered eg by filtration or centrifuging. The free (I) is liberated by treating the salt eg with an (in)organic base, esp. an aq. soln. of a base such as NaOH, KOH, Na2CO3, NH3, triethylamine, etc. The (I) is recovered e.g. by extraction with an inert solvent in the usual way.

    4.
    发明专利
    未知

    公开(公告)号：DE50301788D1

    公开(公告)日：2006-01-05

    申请号：DE50301788

    申请日：2003-07-14

    Applicant: BASF AG

    Inventor： MILLER CHRISTIAN ,  KAIBEL DR ,  SIEGEL DR

    IPC: B01D3/00 ,  B01D3/16 ,  B01J8/00 ,  B01J8/12 ,  B01J19/32

    Abstract: Carrying out reactive distillation in the presence of a heterogeneous catalyst suspended as dispersed phase in the liquid comprises continuously removing a part of the suspension containing the catalyst from the column, treating in a preparation stage, and returning the treated catalyst to the column.

    5.
    发明专利
    未知

    公开(公告)号：DE50005399D1

    公开(公告)日：2004-04-01

    申请号：DE50005399

    申请日：2000-09-21

    Applicant: BASF AG

    Inventor： SCHEIN DR ,  BALDENIUS DR ,  SIEGEL DR ,  STUERMER DR ,  RUFF DR ,  JAEDICKE DR

    IPC: C07B61/00 ,  C07C45/46 ,  C07C49/825 ,  C07C67/42 ,  C07C69/017 ,  C07C69/16

    Abstract: Preparation of monoacetylated hydroquinone compound comprises reacting a dicetylphenol compound with peroxo compounds optionally using an acid in one reaction step. Preparation of monoacetylated hydroquinone compound of formula (I) comprises reacting a dicetylphenol compound of formula (II) with peroxo compounds optionally using an acid. R1-R3 = H or Me. Independent claims are included for: (1) preparation of (II) by reacting phenol compounds of formula (III) with an acetylation agent using an acid catalyst; (2) preparation of monoacetylated hydroquinone compounds (I) by reacting (III) with an acetylation agent using an acid catalyst to give (II) and further reacting with peroxo compounds, optionally in the presence of an acid; and (3) compounds of formula (Ia)-(Ie).

    6.
    发明专利
    未知

    公开(公告)号：DE59809145D1

    公开(公告)日：2003-10-02

    申请号：DE59809145

    申请日：1998-10-01

    Applicant: BASF AG

    Inventor： KRAMER DR ,  SIEGEL DR

    IPC: C07D233/34 ,  B01J23/755 ,  B01J25/02 ,  C07B61/00 ,  C07D233/32 ,  C07D233/40 ,  C07D239/10

    Abstract: Production of cyclic urea derivatives (I) comprises reacting an open-chain urea derivative (II) with a diketone (III) and catalytically hydrogenating the reaction product. Production of cyclic urea derivatives (I) comprises: a) reaction of an open-chain urea derivative (II) with a diketone (III); and b) hydrogenation of the reaction product in the presence of a metal-containing catalyst. X and X' = H; OH; 1-4C alkyl; 3-12C cycloalkyl; 1-4C alkoxy; or 6-10C aryl optionally substituted with 1-4C alkyl; Y and Y' = H; 1-4C alkyl; 3-12C cycloalkyl; or 6-10C aryl optionally substituted with 1-4C alkyl; Z' = single bond or 1-4C alkylene optionally substituted with X or X'.

    7.
    发明专利
    未知

    公开(公告)号：DE50000375D1

    公开(公告)日：2002-09-19

    申请号：DE50000375

    申请日：2000-06-15

    Applicant: BASF AG

    Inventor： KRAMER DR ,  MELDER DR ,  RUETTER DR ,  RIEWE GUENTER ,  SIEGEL DR ,  WEYER DR

    IPC: C07D233/32 ,  C07D233/34 ,  C07D239/10

    Abstract: Formic acid-free N-alkyl-N'-methyl-alkylene ureas (I) are obtained from reaction mixtures obtained from the corresponding alkylene urea (II) and formaldehyde in presence of formic acid by supplying the mixture to the upper part of a distillation column, carrying out distillation under specific pressure and temperature conditions and recovering HCOOH-free (I) from the lower part of the column. Preparation of formic acid-free N-alkyl-N'-methyl-alkylene ureas of formula (I), by reacting the corresponding alkylene urea of formula (II) with monomeric or polymerized formaldehyde (HCHO) in presence of formic acid (HCOOH), involves supplying the reaction mixture containing (I) and HCOOH to the upper part of a distillation column, carrying out distillation without further additives and recovering HCOOH-free (I) from the lower part of the column. The pressure is in the upper part of the column is higher than that in the lower part by 10-100 (preferably 20-40) mbars and the temperature in the lower part of the column is higher than that in the upper part by 40-210 (preferably 80-150) degrees C. R1 = H or Me; R2 = H or 1-4C alkyl; x = 0 or 1.

    9.
    发明专利
    未知

    公开(公告)号：DE59309939D1

    公开(公告)日：2000-03-02

    申请号：DE59309939

    申请日：1993-11-26

    Applicant: BASF AG

    Inventor： SCHROEDER DR ,  SIEGEL DR ,  LOKAI MATTHIAS

    IPC: A61K6/083 ,  A61K6/00 ,  C07F9/32 ,  C07F9/40 ,  C07F9/53 ,  C07F9/6571 ,  C07F9/6574 ,  C08F2/50 ,  C09D4/00 ,  C09D5/34 ,  C09D11/101 ,  C09J4/00 ,  G03F7/028 ,  G03F7/029

    Abstract: Arene bisphosphine oxides of the general formula in which the radicals R to R independently of one another stand for a hydrogen atom or a C1-C6-alkyl or alkoxy group, or a C5-C10-aryl group, a C5-C12-aryloxy group or a C7-C14-arylalkoxy group, R and R independently of one another stand for a C1-C6-alkyl group, a C5-C10-cycloalkyl group or a C5-C12 aryl group, which can also contain one or two nitrogen or sulphur atoms in the ring system or can carry one or two halogen atoms, C1-C6-alkyl groups or C1-C6-alkoxy groups as substituents on the ring system or can stand for a C1-C6-alkoxy group, a C3-C8-alkoxyalkoxy group, a C5-C12-aryloxy group or C7-C14-arylalkoxy group or R and R together form a bridge of 2 to 10 carbon atoms, it also being possible for some of the carbon atoms to be a constituent of an aromatic ring.

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