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    Process for preparing magnetic polymer particles
    2.
    发明授权
    Process for preparing magnetic polymer particles 失效
    制备磁性聚合物颗粒的方法

    公开(公告)号：US4774265A

    公开(公告)日：1988-09-27

    申请号：US890221

    申请日：1986-07-29

    申请人： John Ugelstad ,  Turid Ellingsen ,  Arvid Berge ,  Oskar B. Helgee

    发明人： John Ugelstad ,  Turid Ellingsen ,  Arvid Berge ,  Oskar B. Helgee

    IPC分类号： H01G2/00 ,  B03C1/01 ,  G01N33/543 ,  H01F1/10 ,  H01F1/11 ,  H01F1/42 ,  H01G4/38 ,  H01G9/08 ,  H01L31/02 ,  H01L31/04 ,  H01L31/042 ,  H01M2/20 ,  H01M2/22 ,  H01M2/26 ,  H01M2/30 ,  H01M6/42 ,  H02N11/00 ,  C08J9/22 ,  C08K3/10

    CPC分类号： H01F1/42 ,  B03C1/01 ,  G01N33/5434 ,  H01F1/111 ,  G01N2446/10 ,  Y10S428/90 ,  Y10T428/2998

    摘要： Magnetic polymer particles prepared by treating compact or porous polymer particles with a solution of iron salts and, if desired, salts of other metals which are capable of forming magnetic ferrites, in which the solution swells or penetrates into the particles. Iron hydroxide and possible other metal hydroxides are precipitated, for instance by raising the pH value, and the particles are optionally heated. In the iron salts used the ratio between di- and trivalent iron is suitably such that magnetic iron oxide is formed directly. It is also possible to use oxidizing or reducing groups or additives to obtain such a ratio. When other metal salts are used in addition to iron salts, the operation is carried out in the same manner. For instance, when Mn.sup.++, Co.sup.++ or Ni.sup.++ salts are used in addition to Fe.sup.++ salts, the divalent iron is oxidized to trivalent so that magnetic ferrite is obtained. The polymer particles which are treated with metal salts preferably contain metal-binding groups. Such groups are incorporated for instance by using monomers which contain said groups for the preparation of the polymer particles, or the groups are incorporated in the polymer particles prepared.The magnetic polymer particles are spherical and have a uniform concentration of magnetic material. They may be used for medical, diagnostic or other purposes.

    摘要翻译： 通过用铁盐溶液处理紧密或多孔的聚合物颗粒制备的磁性聚合物颗粒，以及如果需要，能够形成磁性铁氧体的其它金属的盐，其中溶液溶胀或渗入颗粒中。 例如通过提高pH值来沉淀氢氧化铁和可能的其它金属氢氧化物，任选地加热颗粒。 在使用的铁盐中，二价和三价铁之间的比例适当地使得直接形成磁性氧化铁。 也可以使用氧化或还原基团或添加剂来获得这种比例。 除了铁盐之外，当使用其它金属盐时，以相同的方式进行操作。 例如，除了Fe ++盐之外，当使用Mn ++，Co ++或Ni ++盐时，二价铁被氧化成三价，从而得到磁性铁氧体。 用金属盐处理的聚合物颗粒优选含有金属结合基团。 这样的基团例如通过使用含有所述基团的单体来制备聚合物颗粒，或将这些基团引入所制备的聚合物颗粒中。 磁性聚合物颗粒是球形的并且具有均匀的磁性材料浓度。 它们可用于医疗，诊断或其他目的。

    Magnetic polymer particles and process for the preparation thereof
    3.
    发明授权
    Magnetic polymer particles and process for the preparation thereof 失效
    磁性聚合物颗粒及其制备方法

    公开(公告)号：US4654267A

    公开(公告)日：1987-03-31

    申请号：US571878

    申请日：1983-12-23

    申请人： John Ugelstad ,  Turid Ellingsen ,  Arvid Berge ,  Oskar B. Helgee

    发明人： John Ugelstad ,  Turid Ellingsen ,  Arvid Berge ,  Oskar B. Helgee

    IPC分类号： H01G2/00 ,  B03C1/01 ,  G01N33/543 ,  H01F1/10 ,  H01F1/11 ,  H01F1/42 ,  H01G4/38 ,  H01G9/08 ,  H01L31/02 ,  H01L31/04 ,  H01L31/042 ,  H01M2/20 ,  H01M2/22 ,  H01M2/26 ,  H01M2/30 ,  H01M6/42 ,  H02N11/00 ,  H01F1/20 ,  B32B15/08

    CPC分类号： H01F1/42 ,  B03C1/01 ,  G01N33/5434 ,  H01F1/111 ,  G01N2446/10 ,  Y10S428/90 ,  Y10T428/2998

    摘要： Magnetic polymer particles prepared by treating compact or porous polymer particles with a solution of iron salts and, if desired, salts of other metals which are capable of forming magnetic ferrites, in which the solution swells or penetrates into the particles. Iron hydroxide and other metal hydroxides, if employed, are precipitated, e.g. by raising the pH value, and the particles are optionally heated. In the iron salts used, the ratio between di- and trivalent iron is suitably such that magnetic iron oxide is formed directly. It is also possible to use oxidizing or reducing groups or additives to obtain such a ratio. When other metal salts are used in addition to iron salts, the operation is carried out in the same manner. For instance, when Mn.sup.++, Co.sup.++ or Ni.sup.++ salts are used in addition to Fe.sup.++ salts, the divalent iron is oxidized to trivalent so that magnetic ferrite is obtained. The polymer particles which are treated with metal salts preferably contain metal-binding groups. Such groups are incorporated e.g. by using monomers which contain said groups for the preparation of the polymer particles, or the groups are incorporated in the polymer particles prepared.The magnetic polymer particles are spherical and have a uniform concentration of magnetic material. They may be used for medical, diagnostic or other purposes.

    摘要翻译： PCT No.PCT / NO83 / 00014 Sec。 371日期1983年12月23日 102（e）1983年12月23日日期PCT提交1983年4月22日PCT公布。 公开号WO83 / 03920 日期：1983年11月10日。磁性聚合物颗粒通过用铁盐溶液处理紧密或多孔的聚合物颗粒，并且如果需要，可以形成能够形成磁性铁氧体的其它金属的盐，其中溶液溶胀或渗入 粒子。 氢氧化铁和其它金属氢氧化物（如果使用）沉淀，如 通过提高pH值，并且任选地加热颗粒。 在所用的铁盐中，二价和三价铁之间的比例适宜地直接形成磁性氧化铁。 也可以使用氧化或还原基团或添加剂来获得这种比例。 除了铁盐之外，当使用其它金属盐时，以相同的方式进行操作。 例如，除了Fe ++盐之外，当使用Mn ++，Co ++或Ni ++盐时，二价铁被氧化成三价，从而得到磁性铁氧体。 用金属盐处理的聚合物颗粒优选含有金属结合基团。 这样的组合例如 通过使用含有所述基团的单体制备聚合物颗粒，或将这些基团引入制备的聚合物颗粒中。 磁性聚合物颗粒是球形的并且具有均匀的磁性材料浓度。 它们可用于医疗，诊断或其他目的。