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    RAPID CHARACTERIZATION OF POLYMERS
    81.
    发明专利
    RAPID CHARACTERIZATION OF POLYMERS 未知

    公开(公告)号：CA2527935A1

    公开(公告)日：1999-10-14

    申请号：CA2527935

    申请日：1999-04-02

    Applicant: SYMYX TECHNOLOGIES INC

    Inventor： LEE THOMAS S ,  FRECHET JEAN M J ,  DALES G CAMERON ,  KUEBLER SIGRID C ,  SAFIR ADAM ,  CARLSON ERIC ,  PETRO MIROSLAV ,  BENNETT JAMES ,  NIELSEN RALPH B

    IPC: G01N30/54 ,  G01N30/24 ,  G01N30/30 ,  G01N30/36 ,  G01N30/74 ,  G01N35/10

    Abstract: A method for characterizing a polymer sample that includes the steps of withdrawing a polymer sample from a sample container into an injection probe of an auto- sampler where the probe is heated to maintain the withdrawn sample at a temperature of not less than about 75 degrees Celsius while resident in the probe. The heated injection probe resides in a first environment maintained at about ambient temperature while withdrawing the polymer sample. The method further includes loading at least a portion of the withdrawn sample into an injection port or a loading port of a liquid chromatography system where the injection port or loading port is adaptable for fluid communication with a chromatographic column. The chromatographic column resides in a heated second environment maintained at a temperature of not less than about 75 degrees Celsius. The loaded sample is injected into a mobile phase of the liquid chromatography system. The sample is maintained at a temperature but not les s than about 75 degrees Celsius during a period of time including from when the sample is withdrawn from the sample container to when the sample is within the heated second environment. The injected sample is chromatographically separated and a property of the sample or a composition thereof is detected.

    Liquid chromatography column distributor
    90.
    发明申请
    Liquid chromatography column distributor 审中-公开
    液相色谱柱分配器

    公开(公告)号：US20030172724A1

    公开(公告)日：2003-09-18

    申请号：US10099452

    申请日：2002-03-15

    Applicant: Symyx Technologies, Inc.

    Inventor： Miroslav Petro ,  Son Hoai Nguyen

    IPC: G01N030/00

    CPC classification number: G01N30/6017 ,  G01N30/02 ,  B01D15/14

    Abstract: A liquid chromatography column distributor spreads liquid over the internal cross sectional area of the column to facilitate separation of the liquid in the column into its constituent components for analysis, particularly where the volume of liquid is small and the rate of flow through the column is high. The distributor is useful for small volumes, less than 100 micro liters. The distribution is preferably done in two or more stages by two or more plates arranged in series. This arrangement keeps the flow paths short and volumes of channels in the plate carrying the liquid small. The distributor may be used in a high performance liquid chromatography (HPLC) in which liquid flows at high rates through the column. The distributor is constructed to protect the liquid sample from damage.

    Abstract translation: 液相色谱柱分配器将液体扩散到柱的内部横截面积上，以便于将柱中的液体分离成其组分成分用于分析，特别是在液体体积小并且流过柱的流量高时 。 经销商对小体积，小于100微升有用。 分布优选通过串联布置的两个或更多个板在两个或更多个阶段中进行。 这种布置保持流动路径短，并且载运液体的板中的通道的体积小。 分配器可用于高效液相色谱（HPLC），其中液体以高速通过柱流动。 分配器被构造成保护液体样品免受损坏。

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