Liquid chromatography and column packing material
    5.
    发明授权
    Liquid chromatography and column packing material 有权
    液相色谱和色谱柱包装材料

    公开(公告)号:US06360589B1

    公开(公告)日:2002-03-26

    申请号:US09180880

    申请日:1998-11-25

    IPC分类号: G01N3000

    摘要: A liquid chromatograph and a column packing material effectively condensing cationic specimen and exhibiting a high resolution. The liquid chromatograph includes a pre-focusing column (30, 40) having a volume of less than 2.0 milliliters and packed with a column packing material, in which a porous support is coated by a silicone polymer having a Si—R—X (R is a spacer part, X is a sulfonic group) bond and a Si—R′ (R′ is a hydrophilic group) bond, wherein the specimen to be analyzed is supplied to the pre-focusing column in the state dispersed in a solvent for condensation. The condensed specimen is then separated in a separation column (16, 43) used for separating the specimen dispersed in the solvent, and the separated specimen is analyzed by a detector (17, 41).

    摘要翻译: 液相色谱仪和色谱柱填充材料有效冷凝阳离子样品并显示高分辨率。 液相色谱仪包括体积小于2.0毫升的预聚焦柱(30,40)并填充有柱填料,其中多孔载体由具有Si-RX的硅氧烷聚合物(R为 间隔部分,X是磺酸基)键和Si-R'(R'是亲水基团)键,其中待分析的试样以分散在用于冷凝的溶剂中的状态提供给预聚焦塔。 然后将冷凝的样品在用于分离分散在溶剂中的试样的分离塔(16,43)中分离,并通过检测器(17,41)分析分离的样品。

    O/W/O type multiple emulsion and method of preparing the same
    10.
    发明授权
    O/W/O type multiple emulsion and method of preparing the same 失效
    O / W / O型多重乳液及其制备方法

    公开(公告)号:US5985177A

    公开(公告)日:1999-11-16

    申请号:US739146

    申请日:1996-10-28

    摘要: This invention relates to an oil-in-water-in-oil (O/W/O) type multiple emulsion which contains an inner oil phase, a water phase, and an outer oil phase. The inner oil phase is first dispersed in water to form an oil-in-water (O/W) emulsion. Then, the O/W emulsion is further dispersed in the outer oil phase to form the O/W/O type multiple emulsion. The outer oil phase contains an organophilic clay mineral, which can effectively prevent the inter-mixing of the inner oil phase with the outer oil phase, thus, producing an O/W/O type multiple emulsion with excellent storage stability. Upon the using of an oil-soluble compound in the inner oil phase, this multiple emulsion system can prevent the oil-soluble compound from being oxidized. In addition, since different kinds of oils can be selected for the making of the inner and outer oil phases, respectively, the O/W/O type multiple emulsion system allows one to present two different kinds of oils, which have different properties independent from each other, in one emulsion system.

    摘要翻译: 本发明涉及含油内油相,水相和外油相的油包水包油型(O / W / O)型多重乳液。 内部油相首先分散在水中以形成水包油(O / W)乳液。 然后,O / W乳液进一步分散在外部油相中以形成O / W / O型多重乳液。 外油相含有亲有机质的粘土矿物,可有效防止内油相与外油相的相互混合,从而生产出具有良好储存稳定性的O / W / O型多重乳液。 在内油相中使用油溶性化合物时,该多重乳液体系可以防止油溶性化合物被氧化。 另外,由于可以分别选择不同种类的油来制造内外油相,所以O / W / O型多重乳液体系允许呈现两种不同种类的油,它们具有独立于 在一个乳液系统中。