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    • 1. 发明授权
    • Method of isolating radioactive perrhenate or pertechnetate from an
aqueous solution
    • 从水溶液中分离放射性高铼酸盐或高锝酸盐的方法
    • US4778672A
    • 1988-10-18
    • US802779
    • 1985-11-27
    • Edward A. DeutschJean-Luc Vanderheyden
    • Edward A. DeutschJean-Luc Vanderheyden
    • A61K51/04C07B59/00G21G4/08A61K43/00C01G47/00C01G57/00
    • G21G4/08A61K51/04C07B59/004A61K2123/00
    • Pure perihenate is isolated from a aqueous crude solution of perrhenate by first associating the perrherate with a lipophilic counter ion such as tetrabutyl ammonium. This is added to the solution in a form such as tetrabutyl ammonium bromide. Tetrabutyl ammonium perrhenate is formed. The aqueous mixture is then added to a reverse phase separation column such as a C.sub.18 Sep Pak filter which has been previously loaded with the lipophilic counter ion. The aqueous portion of the crude mixture is eluted from the column with water. Subsequently the purified perrhenate associated with the lipophilic counter ion is removed with a less polar solvent such as ethanol. Pertechnetate can also be separated from an aqueous mixture in the same manner. These procedures are particularly suited for isolating relatively pure radioactive forms of perrhenate and pertechnetate such as Re.sup.186 O.sub.4.sup.-, Re.sup.188 O.sub.4.sup.-, and .sup.99m TcO.sub.4.sup.-.
    • 通过首先将苦参碱与亲脂性抗衡离子如四丁基铵缔合,从硬质酸水溶液的粗水溶液中分离出纯的过氧化钙。 将其以诸如四丁基溴化铵的形式加入到溶液中。 形成高铼酸四丁基铵。 然后将含水混合物加入到反相分离柱如C18 Sep Pak过滤器中,其已经预先装载了亲脂性抗衡离子。 粗制混合物的水溶液部分用水从柱中洗脱出来。 随后,用极性较小的溶剂如乙醇除去与亲油性抗衡离子缔合的纯化的高铼酸盐。 高锝酸盐也可以以相同的方式从含水混合物中分离出来。 这些方法特别适用于分离相对纯的放射性形式的高铼酸盐和高锝酸盐,如Re186O4-,Re188O4-和99mTcO4-。
    • 5. 发明授权
    • Radionuclide generator system and method for its preparation and use
    • 放射性核素发生器系统及其制备和使用方法
    • US4990787A
    • 1991-02-05
    • US416221
    • 1989-09-29
    • Jean-Luc VanderheydenFu-Min Su
    • Jean-Luc VanderheydenFu-Min Su
    • A61K51/12
    • A61K51/1282A61K2121/00G21G1/0005
    • Improved radionuclide generators include a substantially insoluble salt of a parent radionuclide precursor which may be directly irradiated and then packed in a column for subsequent elution of the daughter radionuclide without the production of counter ion isotopic contaminants. The parent radionuclide precursor is provided in the form of an insoluble salt of the parent element whose counter ion, preferably aluminum, forms a relatively soluble salt with the desired daughter radionuclide. The improved generators may be prepared by reacting a parent radionuclide precursor with aluminum to obtain an aluminum salt of the precursor having low solubility in water, irradiating the aluminum salt to obtain an irradiated aluminum salt of the parent radionuclide, and then disposing the irradiated parent radionuclide in an elutable container. Useful parent radionuclide precursors include molybdenum-98 in the form of molybdate for the production of daughter .sup.99m Tc, as soluble pertechnetate, and tungsten-186 in the form of tungstate for the production of daughter .sup.188 Re as soluble perrhenate. The daughter .sup.99m Tc or .sup.188 Re may be eluting the generator matrix, e.g., with a saline solution.
    • 改进的放射性核素发生器包括母体放射性核素前体的基本上不溶的盐,其可以直接照射,然后包装在柱中,随后洗脱子内放射性核素而不产生抗衡离子同位素污染物。 母体放射性核素前体以母体元素的不溶性盐的形式提供,其抗衡离子,优选为铝,与所需的儿子放射性核素形成相对可溶的盐。 可以通过使母体放射性核素前体与铝反应来制备改进的发生器,以获得在水中具有低溶解度的前体的铝盐,照射铝盐以获得母体放射性核素的照射的铝盐,然后将照射的母体放射性核素 在可洗涤的容器中。 有用的母体放射性核素前体包括钼酸盐形式的钼-98,用于生产作为可溶性高锝酸盐的子体99mTc,钨酸盐形式的钨-186用于生产可溶性高铼酸盐的子188Re。 子母99mTc或188Re可以例如用盐水溶液洗脱发生器基质。