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    • 1. 发明授权
    • Composite magnetic beads
    • 复合磁珠
    • US5834121A
    • 1998-11-10
    • US585905
    • 1996-01-16
    • Irving SucholeikiGraham MargettsMark Roberts
    • Irving SucholeikiGraham MargettsMark Roberts
    • B03C1/01C02F1/48C02F1/68G01N33/543H01F1/00H01F1/37B32B5/16B05D7/00
    • B82Y25/00B03C1/01C02F1/681G01N33/5434H01F1/37C02F1/48G01N2446/20G01N2446/40G01N2446/86Y10S428/90Y10T428/2998
    • This invention provides a novel composite magnetic bead and a method for making the composite magnetic bead. The composite magnetic bead is comprised of a matrix formed from vinyl monomers throughout which is distributed primary beads, each primary bead of which is a magnetizable metal oxide encapsulated in a rigid polymeric coating. The matrix structure allows the composite magnetic bead to swell in organic solvents without loss of the intermeshed primary beads. Further, the matrix can be functionalized to allow the covalent bonding of sites useful for organic syntheses. The composite magnetic beads are made utilizing a core-shell polymerization techinque under conditions which preserve the oxidation state of the magnetizable metal oxide in the primary particles. In one embodiment, primary beads, each having a hydrophobic exterior surface, are dispersed in an inert solvent with a vinyl monomer and a crosslinking agent for that monomer to form a dispersed phase. The dispersed phase is mixed into an aqueous solvent-dispersing agent phase and stirred until the desired droplet size is achieved, then polymerization is initiated. After removal of the solvent and unreacted components, the composite magnetic beads are dried and sieved.
    • 本发明提供一种新型复合磁珠及其制造方法。 复合磁珠由由乙烯基单体形成的基体组成,其中分布有初级珠,每个主珠是包封在刚性聚合物涂层中的可磁化金属氧化物。 基体结构允许复合磁珠在有机溶剂中溶胀而不损失相互啮合的初级珠粒。 此外,基质可以官能化以允许有机合成有用的位点的共价键。 在保持一次颗粒中的可磁化金属氧化物的氧化态的条件下,使用核 - 壳聚合技术制备复合磁珠。 在一个实施方案中,每个具有疏水性外表面的初级珠粒分散在具有乙烯基单体和用于该单体的交联剂的惰性溶剂中以形成分散相。 将分散相混合到水性溶剂分散剂相中并搅拌直到达到所需的液滴尺寸,然后开始聚合。 除去溶剂和未反应的组分后,将复合磁珠干燥并过筛。
    • 5. 发明授权
    • Method to use fluorescent magnetic polymer particles as markers in an
immunoassay
    • 荧光磁性聚合物颗粒作为免疫测定中的标记物的方法
    • US06013531A
    • 2000-01-11
    • US518135
    • 1995-08-22
    • Chaeo-Huej J. WangDinesh O. Shah
    • Chaeo-Huej J. WangDinesh O. Shah
    • C08F257/02C08F285/00C12Q1/68G01N33/543G01N33/58G01N33/553G01N33/546
    • C12Q1/6834C08F257/02C08F285/00G01N33/54326G01N33/582G01N33/585G01N2446/10G01N2446/40G01N2446/84G01N2446/86Y10S435/967
    • This invention provides a novel process of using magnetically responsive fluorescent polymer particles comprising polymeric core particles coated evenly with a layer of polymer containing magnetically responsive metal oxide as highly sensitive quantitative reagents for biochemical and immunological studies, wherein the fluorescent magnetic particles can serve as a marker for the number of particles. A wide variety of polymeric particles with sizes ranging from 1 to 100 microns can be used a core particles and transformed into magnetically responsive polymer particles. The surface of these magnetically responsive polymer particles can be coated further with another layer of functionalized polymer. These magnetically responsive fluorescent polymer particles can be used for passive or covalent coupling of biological material such as antigens, antibodies, enzymes or DNA/RNA hybridization and used as solid phase for various types of immunoassays, DNA/RNA hybridization probes assays, affinity purification, cell separation and other medical, diagnostic, and industrial applications.
    • 本发明提供了一种使用磁响应荧光聚合物颗粒的新方法,其包括均匀包被含有磁响应金属氧化物的聚合物层的聚合物芯颗粒,作为生物化学和免疫学研究的高灵敏度定量试剂,其中荧光磁性颗粒可以作为标记 对于颗粒数量。 尺寸范围为1至100微米的多种聚合物颗粒可用于核心颗粒并转化为磁响应聚合物颗粒。 这些磁响应聚合物颗粒的表面可以进一步被另一层官能化聚合物涂覆。 这些磁响应荧光聚合物颗粒可用于生物材料如抗原,抗体,酶或DNA / RNA杂交的被动或共价偶联,并用作各种类型的免疫测定的固相,DNA / RNA杂交探针测定,亲和纯化, 细胞分离等医疗,诊断和工业应用。