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    METHOD FOR PRODUCING 2-(4-N, N-DIALKYLAMINO-2-HYDROXYBENZOYL)BENZOATES
    23.
    发明专利
    METHOD FOR PRODUCING 2-(4-N, N-DIALKYLAMINO-2-HYDROXYBENZOYL)BENZOATES 未知

    公开(公告)号：AU2003224156A1

    公开(公告)日：2003-12-02

    申请号：AU2003224156

    申请日：2003-05-12

    Applicant: BASF AG

    Inventor： HEIDENFELDER THOMAS ,  BECK KARL

    IPC: C07C227/42 ,  C07B61/00 ,  C07C227/00 ,  C07C227/18 ,  C07C227/38 ,  C07C227/40 ,  C07C229/52

    Abstract: Production of 2-(4-N,N-dialkylamino-2-hydroxybenzoyl)benzoic acid esters comprises reaction of a 3-N,N-dialkylaminophenol with phthalic acid anhydride to form a 2-(4-N,N-dialkylamino-2-hydroxybenzoyl)benzoic acid, esterification with a 1-12C alcohol or cyclic 3-10 C alcohol in the presence of an acid catalyst. A process for the production of 2-(4-N,N-dialkylamino-2-hydroxybenzoyl)benzoic acid esters (I) of formula (1) comprises: (a) reaction of a 3-N,N-dialkylaminophenol of formula (2) with phthalic acid anhydride to form a 2-(4-N,N-dialkylamino-2-hydroxybenzoyl)benzoic acid of formula (3) followed by; (b) esterification with a 1-12C alcohol or cyclic 3-10 C alcohol in the presence of an acid catalyst to form the ester (I) of formula (1) whereby the product ester is purified in a step; (c) by treatment with an adsorbent and/or by distillation. R1, R2 = 1-6C alkyl or 3-10C cycloalkyl; R3 = 1-12C alkyl or 3-10C cycloalkyl.

    Production of 4,4'-di:halo-di:phenyl-sulphone
    24.
    发明专利
    Production of 4,4'-di:halo-di:phenyl-sulphone 未知

    公开(公告)号：DE19726806A1

    公开(公告)日：1999-01-07

    申请号：DE19726806

    申请日：1997-06-24

    Applicant: BASF AG

    Inventor： BECKMANN STEFAN DR ,  REICHELT HELMUT DR ,  BECK KARL ,  FRIEDRICH KLAUS DR ,  GEHRER EUGEN DR ,  PLESNIVY THOMAS DR

    IPC: B01J21/16 ,  C07C315/00 ,  C07C317/14 ,  C07C315/04

    Abstract: A process for the production of 4,4'-dihalo-diphenyl- sulphones (DHDPSO) comprises reacting chloro-, bromo- or fluoro- benzenes with 4-halophenylsulphonyl chlorides of formula (I); in which X = chlorine, bromine or fluorine. The reaction is carried out in the liquid phase at elevated temperature in presence of solid catalysts with acid centres, comprising (K1) layer silicates with negative layer charges neutralised by protons and essentially not doped with Lewis acids, (K2) zeolites in the acidic H-form, or (K3) mixed oxides with acid centres, consisting of a combination of (a) oxides of titanium, zirconium, hafnium, tin, iron or chromium(III) with (b) oxides of vanadium, chromium(VI), molybdenum, tungsten or scandium, or sulphated or phosphatised oxides of group (a), such mixed oxides having been calcined at 450-800 deg C after combination. Preferably type (K1) comprises aluminium silicate in which part of the silicon is replaced by aluminium and/or part of the Al is replaced by magnesium, especially a montmorillonite. Type (K2) comprises zeolites of structural types MFI, MEL, BOG, BEA, EMT, MOR, FAU, MTW, LTL, NES, CON or MCM 22, especially 12-ring zeolites of the BETA, Y, EMT or mordenite type, or 10-ring zeolites of the pentasil type. Type (K3) may be super-acid mixed oxides, preferably with group (a) oxides and group (b) oxides in a mol ratio of (70:30)-(98:2). The process comprises reacting chlorobenzene (PhCl) with 4-chlorophenyl-sulphonyl chloride (ClPhSOCl) in a mol ratio of 1-100, preferably using excess PhCl, at 100-250 deg C and 1-50 bar, preferably at boiling pt. under normal or autogenous pressure. The catalyst is in the form of a solid bed, and the reaction may be carried out as a continuous process in which excess PhCl is returned to the reactor.

    METHOD FOR PRODUCING 4,4' DIHALOGENDIPHENYLSULFONE
    25.
    发明专利
    METHOD FOR PRODUCING 4,4' DIHALOGENDIPHENYLSULFONE 未知

    公开(公告)号：CA2283894A1

    公开(公告)日：1998-12-30

    申请号：CA2283894

    申请日：1998-06-10

    Applicant: BASF AG

    Inventor： PLESNIVY THOMAS ,  BECK KARL ,  GEHRER EUGEN ,  REICHELT HELMUT ,  BECKMANN STEFAN ,  OPPER WALTER ,  FRIEDRICH KLAUS

    IPC: B01J21/16 ,  B01J23/28 ,  B01J23/30 ,  B01J23/888 ,  B01J23/889 ,  C07C315/00 ,  C07C317/14

    Abstract: The invention relates to a method for producing 4,4'-dihalogendiphenylsulfone by reacting halogenated benzene with 4-halogenphenylsulfonyl chloride in a liquid phase at high temperature, in the presence of a solid catalyst having acid centers. The method is characterized in that the reaction of 4halogenphenylsulfonyl chloride with formula (I), in which X is chlorine, bromine or fluorine, with chlorobenzene, bromobenzene, or fluorobenzene, is carried out in the presence of a catalyst which is selected from one of the following groups: K1) catalysts consisting of essentially stratified silicates not having Lewis acids and having proton-saturated negative layer loads, or containing these as a basic component; K2) catalysts consisting of zeolites in the acid H form, or containing these as a basic component; and K3) catalysts consisting of mixed oxides having acidic centres, or containing these as basic components. The mixed oxides consist of a combination of (a) titanium, circonium, hafnium, tin, iron or Cr(III) oxides on the one hand, and (b) vanadium, chromium(VI), molybdenum, wolfram or scandium oxides on the other hand; or the mixed oxides are sulfatized or phosphatized oxides of the group (a), and said mixed oxides are calcined after combination, at temperatures of 450 to 800 ~C.

    PREPARACION DE ESTERES 2-CIAN-3,3-DIARILACRILICOS.
    26.
    发明专利
    PREPARACION DE ESTERES 2-CIAN-3,3-DIARILACRILICOS. 未知

    公开(公告)号：MX9708836A

    公开(公告)日：1998-03-31

    申请号：MX9708836

    申请日：1996-05-24

    Applicant: BASF AG

    Inventor： HOLDERBAUM MARTIN ,  BECK KARL ,  AUMUELLER ALEXANDER ,  WITZEL TOM ,  VOIT GUIDO

    IPC: C07C253/30 ,  C07C255/41

    Abstract: Un proceso para preparar los ésteres 2-ciano-3,3-diarilacrílicos de la formula general I, en donde R1 y R2 son hidrogeno, grupos alquilo de C1-C12, grupos alcoxi de C1-C12 o grupos dialquil (de C1-C4)amino y R3 es un grupo alquilo de C4-C18 que puede ser interrumpido por átomos de oxígeno que funcionan comoéter, haciendo reaccionar una benzofenona imina de la formula general II, con un éster cianoacético de la formula general III, en donde la reaccion se lleva a cabo desde 20 a 60 degree C y, durante ésta, el amoniaco liberado se elimina continuamente de la mezcla de reaccion con la ayuda de una corriente de gas o reduciendo la presion de 900 a 100 mbar.

    28.
    发明专利
    未知

    公开(公告)号：DE19519894A1

    公开(公告)日：1996-12-05

    申请号：DE19519894

    申请日：1995-05-31

    Applicant: BASF AG

    Inventor： HOLDERBAUM MARTIN ,  BECK KARL ,  AUMUELLER ALEXANDER ,  WITZEL TOM ,  VOIT GUIDO

    IPC: C07C253/30 ,  C07C255/41 ,  C07C255/23 ,  C07C253/00

    Abstract: A process for producing 2-cyano-3,3-diary acrylic acid esters of general formula (I) in which R and R are hydrogen, C1-C12 alkoxy groups or di-(C1-C4 alkyl) amino groups and R is a C4-C18 alkyl group which may be interrupted by oxygen atoms in the ether function, by the reaction of benzophenonimine of general formula (II) with a cyanic acid ester of general formula (III), in which the reaction is conducted at 20 to 60 DEG C and the ammonia released is continuously removed from the reaction mixture with the aid of a stream of gas or by reducing the pressure to 900 to 100mbar.

    Process for the preparation of symmetrical dialkylureas
    29.
    发明专利
    Process for the preparation of symmetrical dialkylureas 未知

    公开(公告)号：DE3824488A1

    公开(公告)日：1990-02-15

    申请号：DE3824488

    申请日：1988-07-20

    Applicant: BASF AG

    Inventor： LUETZOW DIETRICH DR ,  HETTICH WERNER ,  WUNDER RAINER DR ,  BECK KARL

    IPC: C07C273/18 ,  C07C275/06

    Abstract: Symmetrical dialkylureas are obtained by reaction of carbon dioxide with excess monoalkylamines at elevated temperatures and pressures in a reaction zone and expelling a part of the unreacted starting substances and the water formed in the reaction by releasing the pressure of the reaction melt obtained in the reaction. The alkylamine alkylcarbamate contained in the reaction melt is then thermally decomposed into monoalkylamine and carbon dioxide, which are expelled from the melt together with further water vapour. The vapours expelled during the pressure release and thermal decomposition are condensed and treated with sodium hydroxide solution to recover monoalkylamine. According to the invention the vapours expelled during the pressure release are washed in a separating column with a part of the liquefied monoalkylamine contained in the vapours and liquefied at the top of the separating column. The other part of the liquefied, virtually CO2- and water-free monoalkylamine is fed back into the reaction zone.

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