73.
    发明专利
    未知

    公开(公告)号:DE50106917D1

    公开(公告)日:2005-09-01

    申请号:DE50106917

    申请日:2001-11-16

    Applicant: BASF AG

    Abstract: The invention relates to a method for deactivating and recovering boron trifluoride when producing polyisobutenes by means of cationic polymerization of isobutene or hydrocarbon streams containing isobutene in the liquid phase in the presence of boron trifluoride or in the form of a boron trifluoride catalyst complex. The catalyst complex is separated, essentially in the liquid phase, from the reactor discharge. The method comprises the following steps: a) removing from the polymerization reactor at -60 to 020 C., methanol, ethanol or a mixture of methanol and ethanol in such a quantity that an alcohol phase rich in boron trifluoride is formed; b) separating the alcohol phase according to (a) and, (c) optionally recycling the boron trifluoride of the alcohol phase obtained from (b) to the method in a suitable manner.

    74.
    发明专利
    未知

    公开(公告)号:DE10322153A1

    公开(公告)日:2004-12-02

    申请号:DE10322153

    申请日:2003-05-16

    Applicant: BASF AG

    Abstract: A process for reducing the content of oxygen-containing and/or nitrogen-containing compounds in streams having an isobutene content of at least 10% by weight, which comprises passing the stream in the liquid state at a temperature T [in K] and a linear velocity v [in cm/min] over a fixed bed of an acid-free zeolite having a mean pore size of from 0.3 to 1.5 nm, where the fixed bed has a length l [in cm] in the flow direction of the stream and T, v and l obey the relationship 2 (T-283 K)/10 K .l/v is described. The process avoids the formation of isobutene oligomers.

    75.
    发明专利
    未知

    公开(公告)号:AT268342T

    公开(公告)日:2004-06-15

    申请号:AT01974173

    申请日:2001-08-11

    Applicant: BASF AG

    Abstract: A process for the preparation of polyisobutylenes by cationic polymerization of isobutylene or isobutylene-containing hydrocarbon streams in the liquid phase in the presence of boron trifluoride acting as catalyst, the catalytic activity of boron trifluoride being partially or completely stopped by means of a solid deactivator following a given timelapse, which deactivator is an inorganic, anhydrous or hydrous oxygen compound of aluminum which is insoluble in the reaction mixture.

    76.
    发明专利
    未知

    公开(公告)号:DE10132337A1

    公开(公告)日:2003-01-16

    申请号:DE10132337

    申请日:2001-07-04

    Applicant: BASF AG

    Abstract: A polyisobutene composition is disclosed with a global maximum for the differential molecular weight distribution curve at a molecular weight Mmax of 3500 to 8000, with at last one local maximum at a molecular weight of 112 to 560. The isobutene oligomers present are flow and boiling auxiliary agents. They are applied to high molecular weight isobutene polymers, preferably before or during a distillation, to remove non-reacted isobutene and/or an inert solvent.

    77.
    发明专利
    未知

    公开(公告)号:DE10040618A1

    公开(公告)日:2002-02-28

    申请号:DE10040618

    申请日:2000-08-16

    Applicant: BASF AG

    Abstract: The invention relates to a method for producing polyisobutenes by means of cationic polymerisation of isobutene or hydrocarbon flows containing isobutene in the liquid phase in the presence of boron trifluoride as a catalyst. The catalytic efficacy of the boron trifluoride is partially or fully eliminated at a desired point in time by means of a solid deactivator, said deactivator being an inorganic, anhydrous, or aqueous aluminium oxide which is insoluble in the reaction mixture.

    79.
    发明专利
    未知

    公开(公告)号:DE59507712D1

    公开(公告)日:2000-03-02

    申请号:DE59507712

    申请日:1995-11-14

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP95/04463 Sec. 371 Date May 6, 1997 Sec. 102(e) Date May 6, 1997 PCT Filed Nov. 14, 1995 PCT Pub. No. WO96/16023 PCT Pub. Date May 30, 1996Halomethylbenzoyl cyanides I PH-CO-CN (I) where Ph is phenyl which is substituted by chloromethyl or bromomethyl and may cary 1-4 other rradicals, are prepared from halomethylbenzoyl chlorides II PH-CO-Cl (II), by reacting II with a cyanide-donating compound in the presence of a Lewis acid, if required in an inert organic solvent or diluent, and then isolating the product. The halomethylbenzoyl cyanides I are important intermediates for synthesizing crop protection agents.

    METHOD OF OBTAINING HALOGENOMETHYL-BENZOIL CYANIDES AND NOVEL HALOGENOMETHYL-BENZOYL CYANIDES

    公开(公告)号:PL177244B1

    公开(公告)日:1999-10-29

    申请号:PL30293994

    申请日:1994-04-07

    Applicant: BASF AG

    Abstract: A process for preparing halomethylbenzoyl cyanides I Ph-CO-CNI (Ph=phenyl radical substituted by chloromethyl or bromomethyl which, if desired, can additionally carry 1-4 further radicals) by reacting halomethylbenzoyl chlorides II Ph-CO-ClII with an alkali metal cyanide or transition metal cyanide, if appropriate in an organic diluent, and novel halomethylbenzoyl cyanides I' I' (X=halogen, C1-C4-alkyl, C1-C4-alkoxy, CF3, C1-C5-alkyl-(C1-C5-alkyl)hydroxyimino or C1-C5-alkyl-(C2-C5-alkenyl)hydroxyimino; m=0 to 4 and Y=chloromethyl or bromomethyl) are described. The halomethylbenzoyl cyanides I are important intermediates for the synthesis of plant protection agents.

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