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8 records (took 0.02 seconds)

    1.
    发明专利
    未知

    公开(公告)号：NO172402C

    公开(公告)日：1993-07-14

    申请号：NO883274

    申请日：1988-07-22

    Applicant: BASF AG

    Inventor： STANGE ANDREAS ,  DEGEN HANS-JUERGEN ,  AUHORN WERNER ,  WEBERNDOERFER VOLKMAR ,  KROENER MICHAEL ,  HARTMAN HEINRICH

    IPC: D21H17/34 ,  D21H17/28 ,  D21H17/45 ,  D21H21/18

    Abstract: In the process, an agent which confers dry strength and can be obtained by mixing enzymatically degraded starch having a viscosity of 20 to 2,000 m Pa.s (determined on a 7.5% strength solution in water at 45 DEG C) with cationic polymers which contain, in copolymerised form,… a) diallyldimethylammonium chloride… b) N-vinylamine or… c) optionally substituted N-vinylimidazolines as characteristic monomers, the K-value of the cationic polymers being at least 30, is added to the paper stock and the stock is dewartered, during sheet formation.

    2.
    发明专利
    未知

    公开(公告)号：NO172402B

    公开(公告)日：1993-04-05

    申请号：NO883274

    申请日：1988-07-22

    Applicant: BASF AG

    Inventor： STANGE ANDREAS ,  DEGEN HANS-JUERGEN ,  AUHORN WERNER ,  WEBERNDOERFER VOLKMAR ,  KROENER MICHAEL ,  HARTMAN HEINRICH

    IPC: D21H17/34 ,  D21H17/28 ,  D21H17/45 ,  D21H21/18

    Abstract: In the process, an agent which confers dry strength and can be obtained by mixing enzymatically degraded starch having a viscosity of 20 to 2,000 m Pa.s (determined on a 7.5% strength solution in water at 45 DEG C) with cationic polymers which contain, in copolymerised form,… a) diallyldimethylammonium chloride… b) N-vinylamine or… c) optionally substituted N-vinylimidazolines as characteristic monomers, the K-value of the cationic polymers being at least 30, is added to the paper stock and the stock is dewartered, during sheet formation.

    3.
    发明专利
    未知

    公开(公告)号：NO883274L

    公开(公告)日：1989-01-26

    申请号：NO883274

    申请日：1988-07-22

    Applicant: BASF AG

    Inventor： STANGE ANDREAS ,  DEGEN HANS-JUERGEN ,  AUHORN WERNER ,  WEBERNDOERFER VOLKMAR ,  KROENER MICHAEL ,  HARTMAN HEINRICH

    IPC: D21H17/34 ,  D21H17/28 ,  D21H17/45 ,  D21H21/18 ,  D21H

    Abstract: In the process, an agent which confers dry strength and can be obtained by mixing enzymatically degraded starch having a viscosity of 20 to 2,000 m Pa.s (determined on a 7.5% strength solution in water at 45 DEG C) with cationic polymers which contain, in copolymerised form,… a) diallyldimethylammonium chloride… b) N-vinylamine or… c) optionally substituted N-vinylimidazolines as characteristic monomers, the K-value of the cationic polymers being at least 30, is added to the paper stock and the stock is dewartered, during sheet formation.

    FINELY DIVIDED GEL-LIKE CROSSLINKED POLYMERS
    4.
    发明专利
    FINELY DIVIDED GEL-LIKE CROSSLINKED POLYMERS 未知

    公开(公告)号：AU6414786A

    公开(公告)日：1987-04-30

    申请号：AU6414786

    申请日：1986-10-17

    Applicant: BASF AG

    Inventor： NOWAKOWSKY BERNHARD HENRYK ,  BECK JUERGEN ,  HARTMAN 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 ,  C08F2/16 ,  C08F26/10

    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：NO883274D0

    公开(公告)日：1988-07-22

    申请号：NO883274

    申请日：1988-07-22

    Applicant: BASF AG

    Inventor： STANGE ANDREAS ,  DEGEN HANS-JUERGEN ,  AUHORN WERNER ,  WEBERNDOERFER VOLKMAR ,  KROENER MICHAEL ,  HARTMAN HEINRICH

    IPC: D21H17/34 ,  D21H17/28 ,  D21H17/45 ,  D21H21/18 ,  D21H

    Abstract: In the process, an agent which confers dry strength and can be obtained by mixing enzymatically degraded starch having a viscosity of 20 to 2,000 m Pa.s (determined on a 7.5% strength solution in water at 45 DEG C) with cationic polymers which contain, in copolymerised form,… a) diallyldimethylammonium chloride… b) N-vinylamine or… c) optionally substituted N-vinylimidazolines as characteristic monomers, the K-value of the cationic polymers being at least 30, is added to the paper stock and the stock is dewartered, during sheet formation.

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