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    33.
    发明专利
    未知

    公开(公告)号：BRPI0514114A

    公开(公告)日：2008-05-27

    申请号：BRPI0514114

    申请日：2005-07-30

    Applicant: BASF AG

    Inventor： WOLF GERHARD ,  KLUEGLEIN MATTHIAS ,  HUEFFER STEPHAN ,  PETROVIC SUSANNE

    IPC: C08F2/00 ,  C08F220/06 ,  C08F267/02 ,  C08F291/00 ,  C14C3/22 ,  C14C9/00

    Abstract: The present invention relates to copolymers prepared by copolymerization in at least two stages, wherein, in one stage (A) at least one (co)polymer is prepared from a monomer or a mixture of comonomers comprising (a1) from 80 to 100% by weight of at least one ethylenically unsaturated carboxylic acid, (a2) from 0 to 20% by weight of at least one C 1 -C 22 -alkyl ester of at least one ethylenically unsaturated carboxylic acid, (a3) from 0 to 10% by weight of at least one further ethylenically unsaturated compound, data in % by weight being based on the total amount of comonomers of the relevant stage, and the (co)polymer thus obtained is reacted in a subsequent stage (B) with a further comonomer or a further mixture of comonomers comprising (b1) from 0 to 30% by weight of at least one ethylenically unsaturated carboxylic acid, (b2) from 70 to 100% by weight of at least one C 1 -C 22 -alkyl ester of at least one ethylenically unsaturated carboxylic acid, (b3) from 0 to 10% by weight of at least one further ethylenically unsaturated compound, data in % by weight being based on the total amount of comonomers of the relevant further stage.

    34.
    发明专利
    未知

    公开(公告)号：DE50307975D1

    公开(公告)日：2007-09-27

    申请号：DE50307975

    申请日：2003-11-11

    Applicant: BASF AG

    Inventor： REISACHER HANSULRICH ,  KLOPP INGO ,  HUEFFER STEPHAN ,  KLUEGLEIN MATTHIAS

    IPC: C09B67/00 ,  C08J3/20 ,  C09B20060101 ,  C09B67/20 ,  C09B69/10 ,  C09D17/00

    Abstract: A solid pigment preparation contains by wt. (a) a pigment (60-95%); (b) a water-soluble anionic surfactant (5-40%) which is a polymer of an ethylenically unsaturated mono- and/or di-carboxylic acid optionally copolymerized with an acid function-free vinyl monomer, the alkoxylation product of such a (co)polymer or a salt of the (co)polymer or its alkoxylation product; and (c) a polyether-based nonionic surfactant (0-20%). An Independent claim is also included for production of the pigment preparation by wet comminuting pigment (A) in a suspension containing at least a part of (B) and optionally also component (C) and then optionally adding any remainder of (B) and/or (C) and drying the mixture.

    35.
    发明专利
    未知

    公开(公告)号：DE50210711D1

    公开(公告)日：2007-09-27

    申请号：DE50210711

    申请日：2002-05-24

    Applicant: BASF AG

    Inventor： HUEFFER STEPHAN ,  RATH HANS PETER ,  LANG GABRIELE ,  KREMESKOETTER JENS ,  STOECKELMANN ELMAR

    IPC: C08F10/10 ,  C08F2/00 ,  C08F2/01 ,  C08F2/06 ,  C08F4/00 ,  C08F4/06 ,  C08F4/12 ,  C08F4/16 ,  C08F4/58 ,  C08F10/00 ,  C08F10/08 ,  C08F110/06 ,  C08F110/10

    Abstract: Homo- and copolymers of isobutene are prepared by continuous cationic polymerization of isobutene or mixtures of isobutene with ethylenically unsaturated comonomers in the presence of an initiator system comprising:i) a Lewis acid selected from covalent metal-halogen compounds and covalent semimetal-halogen compounds andii) at least one aprotic organic compound I having at least one functional group FG which forms a carbocation or a cationic complex with the Lewis acid under polymerization conditions in an organic solvent inert with respect to the Lewis acid, by a process in which the polymerization is carried out in a tubular flow-through reactor which has a plurality of curves having an alternating direction of curvature.

    36.
    发明专利
    未知

    公开(公告)号：AT370168T

    公开(公告)日：2007-09-15

    申请号：AT02747321

    申请日：2002-05-24

    Applicant: BASF AG

    Inventor： HUEFFER STEPHAN ,  RATH HANS ,  LANG GABRIELE ,  KREMESKOETTER JENS ,  STOECKELMANN ELMAR

    IPC: C08F10/10 ,  C08F2/00 ,  C08F2/01 ,  C08F2/06 ,  C08F4/00 ,  C08F4/06 ,  C08F4/12 ,  C08F4/16 ,  C08F4/58 ,  C08F10/00 ,  C08F10/08 ,  C08F110/06 ,  C08F110/10

    Abstract: Homo- and copolymers of isobutene are prepared by continuous cationic polymerization of isobutene or mixtures of isobutene with ethylenically unsaturated comonomers in the presence of an initiator system comprising:i) a Lewis acid selected from covalent metal-halogen compounds and covalent semimetal-halogen compounds andii) at least one aprotic organic compound I having at least one functional group FG which forms a carbocation or a cationic complex with the Lewis acid under polymerization conditions in an organic solvent inert with respect to the Lewis acid, by a process in which the polymerization is carried out in a tubular flow-through reactor which has a plurality of curves having an alternating direction of curvature.

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