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    Method for producing particulate crosslinked gelatinous polymer
    2.
    发明专利
    Method for producing particulate crosslinked gelatinous polymer 有权
    生产颗粒状交联凝胶聚合物的方法

    公开(公告)号：JP2010196069A

    公开(公告)日：2010-09-09

    申请号：JP2010110985

    申请日：2010-05-13

    Applicant: Basf Se ,  ビーエーエスエフ ソシエタス・ヨーロピアBasf Se

    Inventor： FUNK RUEDIGER ,  HILLEBRECHT ANNEMARIE ,  STUEVEN UWE ,  WEISMANTEL MATTHIAS ,  VAN ESBROECK DOMINICUS ,  POSSEMIERS KARL J ,  DE KAEY RONNY

    IPC: C08F2/01 ,  C08F20/00

    CPC classification number: B01J19/0066 ,  B01J8/10 ,  B01J2208/0061 ,  C08F2/01 ,  C08F6/008 ,  C08F6/10 ,  C08F220/06 ,  C08F220/56

    Abstract: PROBLEM TO BE SOLVED: To provide a method for continuously producing particulate crosslinked gelatinous polymers by copolymerizing water-soluble monoethylenically unsaturated monomers (a) with 0.001 to 5 mol% (based on the monomer (a)) of monomers (b) containing at least two polymerizable groups in a kneader. SOLUTION: The method for producing particulate crosslinked gelatinous polymers is characterized in that at least one of following conditions is satisfied: (1) the degree of charging of the monomers in the kneader is at least 71%; (2) the water-soluble monoethylenically unsaturated monomers contain hydroquinone hemi-ether up to 150 ppm; (3) the polymerization zone temperature is higher than 65°C; and (4) the kneader has back mixing ratio less than 0.33. Further, a material added to an inlet of the kneader is conveyed to an end part of the kneader in the axial direction. COPYRIGHT: (C)2010,JPO&INPIT

    Abstract translation: 要解决的问题：提供一种通过使水溶性单烯属不饱和单体（a）与0.001〜5摩尔％（单体（a））单体（b）共聚而连续生产颗粒状交联凝胶状聚合物的方法， 在捏合机中含有至少两个可聚合基团。 ＆lt; P＆gt;解决方案：颗粒状交联凝胶状聚合物的制造方法的特征在于满足以下条件中的至少一个：（1）捏合机中单体的充填度为71％以上。 （2）水溶性单烯属不饱和单体含有高达150ppm的氢醌半乙醚; （3）聚合区温度高于65℃; 和（4）捏合机的回混比小于0.33。 此外，向捏合机的入口添加的材料沿轴向输送到捏合机的端部。 版权所有（C）2010，JPO＆INPIT

    4.
    发明专利
    未知

    公开(公告)号：DE502005007757D1

    公开(公告)日：2009-09-03

    申请号：DE502005007757

    申请日：2005-09-28

    Applicant: BASF SE

    Inventor： STUEVEN UWE ,  VAN MIERT LEO ,  VAN ESBROECK DOMINICUS ,  STEPHAN OSKAR ,  HILLEBRECHT ANNEMARIE ,  WEI HUANMIN

    IPC: B01F15/00 ,  B01F7/04 ,  B01F15/06 ,  B01J19/18 ,  B29B7/48 ,  B29B7/58 ,  B29B7/60 ,  C08J3/00

    Abstract: Mixing kneader comprises at least two shafts (2, 3) that bear kneading bars (5) on crosspieces (4), can rotate in bearings at both ends, are driven from at least one end and are surrounded by a housing (6) that has top openings (10) above the shafts and a product discharge opening (11). The mixing kneader has at least one of four defined features, e.g. the natural bending frequencies of the shafts differ from the excitation frequencies by at least 5%. Mixing kneader comprises at least two shafts (2, 3) that bear kneading bars (5) on crosspieces (4), can rotate in bearings at both ends, are driven from at least one end and are surrounded by a housing (6) that has top openings (10) above the shafts and a product discharge opening (11). The mixing kneader has at least one of the following features: the natural bending frequencies of the shafts differ from the excitation frequencies by at least 5%; at least one shaft is a hollow shaft through which a temperature-controlling medium flows from an inlet (12) to an outlet (13); at least one top opening is closed by a displacer and the gap between the displacer and the kneading bars is no greater than that between the kneading bars and the housing; the cross-section of the product discharge opening is adjustable. An independent claim is also included for a process for producing poly(meth)acrylates using a mixing kneader as above.

    8.
    发明专利
    未知

    公开(公告)号：AT534672T

    公开(公告)日：2011-12-15

    申请号：AT08861545

    申请日：2008-12-08

    Applicant: BASF SE

    Inventor： FUNK RUEDIGER ,  WEISMANTEL MATTHIAS ,  VAN ESBROECK DOMINICUS ,  MEES FILIP

    IPC: C08F2/01 ,  C08F2/44

    Abstract: A process for producing water-absorbing polymer particles, comprising the addition of a solid additive to a polymer gel by means of a conveying screw (1), wherein the solid additive and a gas volume flow are fed to the conveying screw (1) by means of an addition channel (2).

    9.
    发明专利
    未知

    公开(公告)号：AT501788T

    公开(公告)日：2011-04-15

    申请号：AT06777543

    申请日：2006-07-03

    Applicant: BASF SE

    Inventor： HILLEBRECHT ANNEMARIE ,  STUEVEN UWE ,  VAN MIERT LEO ,  VAN ESBROECK DOMINICUS ,  BRIAN BERND ,  CHSZANIECKI SIEGFRIED

    IPC: B01J19/20 ,  B01J8/00

    Abstract: The invention relates to the use of an apparatus for adding at least one solid or viscous liquid additive, or an additive dispersed in solvent, to a reactor interior of a reactor for preparing crosslinked, finely divided polymers by copolymerizing (a) water-soluble, monoethylenically unsaturated monomers and (b) from 0.001 to 5 mol %, based on the monomers (a), of monomers comprising at least two polymerizable groups, (c) from 0 to 20 mol %, based on the monomers (a), of water-insoluble monoethylenically unsaturated monomers, where the apparatus comprises at least one screw for conveying the at least one additive and the at least one screw ends in an addition orifice substantially flush with the inner wall of the reactor interior.

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