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    • 9. 发明授权
    • Time-temperature indicator comprising a side chain crystalline polymer
    • 包含侧链结晶聚合物的时间 - 温度指示剂
    • US09546911B2
    • 2017-01-17
    • US14167394
    • 2014-01-29
    • TEMPTIME CORPORATION
    • Brian S. HuffmanDawn E. SmithCarl M. Lentz
    • G01K3/04G01K11/06G01K11/12G01K1/02
    • G01K1/02G01K3/04G01K11/06
    • A temperature-activatable time-temperature indicator that can be used to monitor the historical exposure of a host product to ambient temperatures includes an optically readable, thermally sensitive indicator element. The indicator element can be inactive below a base temperature and is intrinsically thermally responsive at or above an activation temperature which is equal to or greater than the base temperature. The indicator can record cumulative ambient temperature exposure above the activation temperature irreversibly with respect to time. The indicator element can include a synthetic polymeric material, and optionally, a dye. A side-chain crystallizable polymer such as poly(hexadecylmethacrylate), that is solid below the base temperature and is a viscous liquid above the activation temperature can be employed. Intense indicator element colors can be obtained using an appropriate dye or dyes. Various structural configurations of indicator are described and illustrated.
    • 可用于监测主体产品对环境温度的历史曝光的温度可激活的时间温度指示器包括光学可读的热敏指示元件。 指示元件可以在基础温度以下是无效的,并且在等于或大于基础温度的活化温度或更高的本征热响应。 该指示器可以相对于时间不可逆地记录高于激活温度的累积环境温度暴露。 指示剂元件可以包括合成聚合物材料和任选的染料。 可以使用侧链可结晶聚合物如聚(十六烷基甲基丙烯酸酯),其在基体温度以下是固体,并且是高于活化温度的粘性液体。 可以使用适当的染料或染料获得强烈的指示剂元素颜色。 指示器的各种结构构造被描述和示出。