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    2.
    发明专利
    未知

    公开(公告)号：DE3679150D1

    公开(公告)日：1991-06-13

    申请号：DE3679150

    申请日：1986-10-15

    Applicant: BASF AG

    Inventor： NOWAKOWSKY BERNHARD HENRYK DR ,  BECK JUERGEN ,  HARTMANN HEINRICH DR ,  VAMVAKARIS CHRISTOS DR

    IPC: B01J19/18 ,  C08F2/00 ,  C08F2/10 ,  C08F2/24 ,  C08F20/00 ,  C08F20/02 ,  C08F20/06 ,  C08F20/10 ,  C08F20/28 ,  C08F20/52 ,  C08F20/56 ,  C08F220/04

    Abstract: Finely divided, gel-like crosslinked polymers are prepared by a continuous method in which a monomer mixture which contains, per 100 parts by weight of acrylic acid or methacrylic acid, from 50 to 100 mol % of which in each case are neutralized, acrylamide, methacrylamide or N-vinylpyrrolidone, from 0 to 30 parts by weight of other water-soluble monoethylenically unsaturated monomers and from 0 to 20 parts by weight of water-insoluble monoethylenically unsaturated monomers is copolymerized with from 0.01 to 5 parts by weight of a crosslinking agent, in 20-65% strength by weight aqueous solution in the presence of an initiator at from 45 DEG to 95 DEG C. in a single-screw cylindrical mixer whose stirrer shaft possesses disk segments which have, at the outer end, mixing bars which are arranged in a manner such that the substances fed in at the entrance of the mixer are conveyed in the axial direction to the exit of the mixer, the aqueous monomer solution in the mixer is polymerized under from 100 to 800 mbar, and some of the water is removed during the polymerization, so that a crumb-like gel having a solids content of from 30 to 70% by weight is discharged.

    FINELY DIVIDED GEL-LIKE CROSSLINKED POLYMERS FROM WATER SOLUBLE MONOMERS AND CROSSLINKING AGENT
    3.
    发明专利
    FINELY DIVIDED GEL-LIKE CROSSLINKED POLYMERS FROM WATER SOLUBLE MONOMERS AND CROSSLINKING AGENT 未知

    公开(公告)号：AU595545B2

    公开(公告)日：1990-04-05

    申请号：AU6414786

    申请日：1986-10-17

    Applicant: BASF AG

    Inventor： NOWAKOWSKY BERNHARD HENRYK ,  BECK JUERGEN ,  HARTMANN HEINRICH ,  VAMVAKARIS CHRISTOS

    IPC: B01J19/18 ,  C08F2/00 ,  C08F2/10 ,  C08F2/24 ,  C08F20/00 ,  C08F20/02 ,  C08F20/06 ,  C08F20/10 ,  C08F20/28 ,  C08F20/52 ,  C08F20/56 ,  C08F220/04 ,  C08F26/10 ,  C08F220/06

    Abstract: Finely divided, gel-like crosslinked polymers are prepared by a continuous method in which a monomer mixture which contains, per 100 parts by weight of acrylic acid or methacrylic acid, from 50 to 100 mol % of which in each case are neutralized, acrylamide, methacrylamide or N-vinylpyrrolidone, from 0 to 30 parts by weight of other water-soluble monoethylenically unsaturated monomers and from 0 to 20 parts by weight of water-insoluble monoethylenically unsaturated monomers is copolymerized with from 0.01 to 5 parts by weight of a crosslinking agent, in 20-65% strength by weight aqueous solution in the presence of an initiator at from 45 DEG to 95 DEG C. in a single-screw cylindrical mixer whose stirrer shaft possesses disk segments which have, at the outer end, mixing bars which are arranged in a manner such that the substances fed in at the entrance of the mixer are conveyed in the axial direction to the exit of the mixer, the aqueous monomer solution in the mixer is polymerized under from 100 to 800 mbar, and some of the water is removed during the polymerization, so that a crumb-like gel having a solids content of from 30 to 70% by weight is discharged.

    8.
    发明专利
    未知

    公开(公告)号：DE3537276A1

    公开(公告)日：1987-04-23

    申请号：DE3537276

    申请日：1985-10-19

    Applicant: BASF AG

    Inventor： NOWAKOWSKY BERNHARD HENRYK DR ,  BECK JUERGEN ,  HARTMANN HEINRICH DR ,  VAMVAKARIS CHRISTOS DR

    IPC: B01J19/18 ,  C08F2/00 ,  C08F2/10 ,  C08F2/24 ,  C08F20/00 ,  C08F20/02 ,  C08F20/06 ,  C08F20/10 ,  C08F20/28 ,  C08F20/52 ,  C08F20/56 ,  C08F220/04 ,  C08F220/06 ,  C08F220/56 ,  C08F226/10 ,  C08F220/18

    Abstract: Finely divided, gel-like crosslinked polymers are prepared by a continuous method in which a monomer mixture which contains, per 100 parts by weight of acrylic acid or methacrylic acid, from 50 to 100 mol % of which in each case are neutralized, acrylamide, methacrylamide or N-vinylpyrrolidone, from 0 to 30 parts by weight of other water-soluble monoethylenically unsaturated monomers and from 0 to 20 parts by weight of water-insoluble monoethylenically unsaturated monomers is copolymerized with from 0.01 to 5 parts by weight of a crosslinking agent, in 20-65% strength by weight aqueous solution in the presence of an initiator at from 45 DEG to 95 DEG C. in a single-screw cylindrical mixer whose stirrer shaft possesses disk segments which have, at the outer end, mixing bars which are arranged in a manner such that the substances fed in at the entrance of the mixer are conveyed in the axial direction to the exit of the mixer, the aqueous monomer solution in the mixer is polymerized under from 100 to 800 mbar, and some of the water is removed during the polymerization, so that a crumb-like gel having a solids content of from 30 to 70% by weight is discharged.

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