PROCEDIMIENTO PARA LA PREPARACION DE MEZCLAS DE ISOMEROS DE O-FENOXIALQUILHIDROXILAMINAS O O-FENOXIALQUILOXIMAS.

    公开(公告)号:MX9605361A

    公开(公告)日:1997-12-31

    申请号:MX9605361

    申请日:1995-04-26

    Applicant: BASF AG

    Abstract: Preparacion de mezclas de isomeros de O-fenoxialquilhidroxilaminas Ia e Ib H2N o CH2 CH(R1) O Ar (Ia), H2N-O-CH(R1)-CH2-O-Ar (Ib), (R1 - alquilo; Ar = fenilo sustituido o no sustituido) y las mezclas de sales correspondientes mediante a) conversion de una mezcla de isomeros de O-(2-hidroxietil)oximas IIa e IIb. R3, R2 = N-O-CH2-CH(R1)-OH (IIa), R3, R2 = N O CH(R1) CH2 OH (IIb), (R2 = alquilo y R3 = alquilo, alcoxi, o R2 y R3 juntos con el átomo de carbono comun = anillo de 5 a 7 miembros) con un haluro de sulfonilo de la formula III. Hal-SO2-R4 (III), donde R4 es un radical orgánico, y Hal es halogeno, en presencia de una base en la mezcla correspondiente de sulfonatos IVa IVb, R3 y R2 = N-O-CH2-CH(R1)-O-SO2-R4 (IVa), R3 y R2 = N-O-CH(R1)-CH2-O-SO2-R4 (IVb) b) reaccion de esta mezcla de sulfonatos en presencia de una base con un fenol de la formula v. HO-Ar (V), para proporcionar un mezcla de O-fenoklalquiloximas de las formulas generales VIa e VIb; R3 y R2 = N-O-CH2-CH(R1)-O-Ar (VIa), R3 y R2 = N-O-CH(R1)-CH2-O-Ar (VIb) c) hidrolizacion de está mezcla en presencia de un ácido y, si se desea, d) liberacion de las O-fenilalquilbidroxilaminas Ia e Ib a partir de las sales resultantes usando una base mineral. Las O-fenoxialquilhidroxilaminas Ia/Ib y sus precursores VIa/VIb son compuestos intermedios importantes para agentes de proteccion de cosecha y fármacos.

    38.
    发明专利
    未知

    公开(公告)号:DE50102486D1

    公开(公告)日:2004-07-08

    申请号:DE50102486

    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.

    METHOD FOR DEACTIVATING AND RECOVERING BORON TRIFLUORIDE WHEN PRODUCING POLYISOBUTENES

    公开(公告)号:HU0301859A2

    公开(公告)日:2003-08-28

    申请号:HU0301859

    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.

Patent Agency Ranking