1.
    发明专利
    未知

    公开(公告)号:DE502006002275D1

    公开(公告)日:2009-01-15

    申请号:DE502006002275

    申请日:2006-07-13

    Applicant: BASF SE

    Abstract: Process for preparing polyoxymethylene copolymers (POMs) by a) polymerizing a reaction mixture comprising suitable main monomers and comonomers and also a polymerization initiator and, if appropriate, a regulator, b) adding a deactivator and c) removing the residual monomers, wherein the amount of compounds whose melting point at 1013 hPa is below 60° C. present in the reaction mixture at any point in time during the process is not more than 0.1% by weight, with the POM, the monomers, comonomers, polymerization initiators, deactivators and regulators not being included in the calculation.

    POLICARBONATOS DE ALTA FUNCIONALIDAD, HIPERRAMIFICADOS ASI COMO SU ELABORACION Y UTILIZACION.

    公开(公告)号:ES2347715T3

    公开(公告)日:2010-11-03

    申请号:ES07787685

    申请日:2007-07-18

    Applicant: BASF SE

    Abstract: policarbonatos hiperramificados con grupos que actúan como estabilizadores, preparados mediante la conversión de (a) al menos, un compuesto con, al menos, tres grupos hidroxilos alcohólicos por molécula con (b) al menos, un reactivo de la fórmula general I (c) y, al menos, un reactivo de la fórmula general X3-A1-X4, cuyas variables se definen del siguiente modo: **(Ver fórmula)** 10 X1, X2 son iguales o diferentes y son seleccionados entre halógeno, alcoxi C1C10, ariloxi C6- C10 y halógeno O-C(=O), X3 es un grupo funcional seleccionado entre OH, SH, NH2, alquilo NH-C1C4-, isocianato, epoxi, COOH, COOR12, C(=O)-O-C(=O), C(=O)-Cl, R12 es alquilo C1-C4 o arilo C6-C10, A1 es un espaciador seleccionado entre para-fenileno, meta-fenileno, y alquilo C1-C100, ramificado o no ramificado, donde, eventualmente, uno a 6 grupos CH2 no adyacentes pueden ser reemplazados respectivamente por un átomo de azufre, eventualmente oxidado, o un átomo de oxígeno, X4 es un grupo seleccionado entre benzofenonas, aminas aromáticas y heterociclos que contienen nitrógeno, en cada caso sustituido o no sustituido y grupos fenoles con impedimento estérico.

    6.
    发明专利
    未知

    公开(公告)号:DE502006002258D1

    公开(公告)日:2009-01-15

    申请号:DE502006002258

    申请日:2006-03-15

    Applicant: BASF SE

    Abstract: A process for the preparation of polyoxymethylenes by cationic polymerization of the monomers a) in the presence of initiators b) and, if appropriate, in the presence of regulators c) and subsequent deactivation and isolation of the polymer, wherein the total amount of proton donors is less than 5000 ppm in the entire polymerization.

    9.
    发明专利
    未知

    公开(公告)号:AT416209T

    公开(公告)日:2008-12-15

    申请号:AT06777740

    申请日:2006-07-13

    Applicant: BASF SE

    Abstract: Process for preparing polyoxymethylene copolymers (POMs) by a) polymerizing a reaction mixture comprising suitable main monomers and comonomers and also a polymerization initiator and, if appropriate, a regulator, b) adding a deactivator and c) removing the residual monomers, wherein the amount of compounds whose melting point at 1013 hPa is below 60° C. present in the reaction mixture at any point in time during the process is not more than 0.1% by weight, with the POM, the monomers, comonomers, polymerization initiators, deactivators and regulators not being included in the calculation.

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