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    PROCESS FOR PREPARING A (METH)ACRYLATE COPOLYMER CONTAINING QUATERNARY AMMONIUM GROUPS BY FREE-RADICAL POLYMERIZATION IN SOLUTION
    1.
    发明公开
    PROCESS FOR PREPARING A (METH)ACRYLATE COPOLYMER CONTAINING QUATERNARY AMMONIUM GROUPS BY FREE-RADICAL POLYMERIZATION IN SOLUTION 有权
    用于生产（甲基）季氨基丙烯酸酯共聚物，具有自由基聚合在溶液中

    公开(公告)号：EP2627684A1

    公开(公告)日：2013-08-21

    申请号：EP10771068.3

    申请日：2010-10-13

    申请人： Evonik Röhm GmbH

    发明人： MEIER, Christian ,  WEBER, Andreas ,  VORHOLZ, Johannes ,  KÜKSAL, Alpertunga ,  KLOSENDORF, Andreas ,  BÖHMANN, Pamela ,  DENGER, Marcus ,  HOFFMANN, Norbert ,  PAPADOPOULOS, Nikolaos

    IPC分类号： C08F220/34 ,  C08F220/12

    CPC分类号： C08F2/06 ,  C08F220/12 ,  C08F220/34

    摘要： The invention relates to a process for preparing a (meth)acrylate copolymer containing quaternary ammonium groups from a monomer mixture selected from: (a) 80 to 99 % by weight of a C1-C4-alkyl ester of acrylic acid or methacrylic acid; and (b) 20 to 1 % by weight of an alkyl ester of acrylic acid or methacrylic acid with a quaternary ammonium group in the alkyl radical; and (c) 0 to 10 % of further copolymerizable vinyl monomers whereby one or more polymerization initiators, optionally one or more molecular weight regulators and one or more solvents or of a solvent mixture are added to the monomer mixture to give a polymerization mixture, which is polymerized at temperatures from 30 to 120 C over a period of 2 to 24 hours, where the polymerization mixture is polymerized to a polymerization syrup with a conversion of the monomers to the copolymer of at least 99 % by weight, where the polymerization syrup is subsequently degassed by distillation or by extrusion and the degassed polymerization syrup is further comminuted to a copolymer preparation in the form of a granulate or powder and where the copolymer preparation is characterized by a molecular weight (Mw) of 25.000 to 50.000, a polydispersity index of 2.0 to 3.0 and a residual solvent concentration of less than 10.000 ppm by weight.

    PROCESS FOR PREPARING A (METH)ACRYLATE COPOLYMER CONTAINING TERTIARY AMINO GROUPS BY FREE-RADICAL POLYMERIZATION IN SOLUTION
    2.
    发明公开
    PROCESS FOR PREPARING A (METH)ACRYLATE COPOLYMER CONTAINING TERTIARY AMINO GROUPS BY FREE-RADICAL POLYMERIZATION IN SOLUTION 有权
    生产具有与自由基聚合叔氨基在溶液中的（甲基）丙烯酸酯共聚物

    公开(公告)号：EP2627677A1

    公开(公告)日：2013-08-21

    申请号：EP10763383.6

    申请日：2010-10-13

    申请人： Evonik Röhm GmbH

    发明人： MEIER, Christian ,  WEBER, Andreas ,  VORHOLZ, Johannes ,  KÜKSAL, Alpertunga ,  KLOSENDORF, Andreas ,  BÖHMANN, Pamela ,  DENGER, Marcus ,  HOFFMANN, Norbert ,  PAPADOPOULOS, Nikolaos

    IPC分类号： C08F2/04 ,  C08F220/18 ,  C08F220/34

    CPC分类号： C08F2/04 ,  C08F220/18 ,  C08F220/34

    摘要： The invention relates to a process for preparing a (meth) acrylate copolymer containing tertiary amino groups by free-radical polymerization in solution from a monomer mixture selected from a) 30 to 70 % by weight of a C
    1 -C
    4 -alkyl ester of acrylic acid or methacrylic acid and b) 70 to 30 % by weight of an alkyl ester of acrylic acid or methacrylic acid with a tertiary amino group in the alkyl radical and c) 0 to 10 % of further copolymerizable vinyl monomers, whereby one or more polymerization initiators, optionally one or more molecular weight regulators and one or more solvents or of a solvent mixture are added to the monomer mixture to give a polymerization mixture, which is polymerized at temperatures from 30 to 120 °C over a period of 2 to 24 hours,, where the polymerization mixture is finally polymerized to give a polymerization syrup with a conversion of the monomers to the copolymer of at least 99 % by weight, where the polymerization syrup is subsequently degassed by distillation or by extrusion and the degassed polymerization syrup is further comminuted to a copolymer preparation in the form of a granulate or powder, where the copolymer preparation is characterized by a molecular weight (M
    w ) of 25.000 to 75.000 g/mol a polydispersity index of 2.1 to 2.9 and a residual solvent concentration of less than 1.000 ppm by weight.