PARALLEL REACTOR WITH INTERNAL SENSING AND METHOD OF USING SAME

    公开(公告)号:CA2419700C

    公开(公告)日:2006-10-17

    申请号:CA2419700

    申请日:1999-08-12

    Abstract: Devices and methods for controlling and monitoring the progress and properti es of multiple reactions are disclosed. The method and apparatus are especially useful for synthesizing, screening, and characterizing combinatorial libraries, but als o offer significant advantages over conventional experimental reactors as well. The apparatus generally includes multiple vessels for containing reaction mixtures, and systems for controlling the stirring rate and temperature of individual reaction mixture s or groups of reaction mixtures. In addition, the apparatus may include provisions for independently controlling pressure in each vessel, and a system for injectin g liquids into the vessels at a pressure different than ambient pressure. In situ monitorin g of individual reaction mixtures provides feedback for process controllers, and also provid es data for determining reaction rates, product yields, and various properties of the reaction products, including viscosity and molecular weight. Computer-based methods a re disclosed for process monitoring and control, and for data display and analysis.

    RAPID CHARACTERIZATION OF POLYMERS

    公开(公告)号:CA2527935A1

    公开(公告)日:1999-10-14

    申请号:CA2527935

    申请日:1999-04-02

    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sample from a sample container into an injection probe of an auto- sampler where the probe is heated to maintain the withdrawn sample at a temperature of not less than about 75 degrees Celsius while resident in the probe.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 The method further includes loading at least a portion of the withdrawn sample into an injection port or a loading port of a liquid chromatography system where the injection port or loading port is adaptable for fluid communication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.

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