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1. 发明申请

WO1992009870A1 COLOR CHANGING DEVICE FOR MONITORING SHELF-LIFE OF PERISHABLE PRODUCTS 审中-公开
标题翻译：用于监控可持续产品的生命周期的颜色变化设备
公开(公告)号：WO1992009870A1
公开(公告)日：1992-06-11
申请号：PCT/US1990006859
申请日：1990-11-21
申请人： J.P. LABORATORIES , PATEL, Gordhanbhai
发明人： J.P. LABORATORIES
IPC分类号： G01K03/04
CPC分类号： G01K11/16 , G01K3/04
摘要： A color changing device for monitoring the time-temperature storage history, i.e. shelf-life, of perishable products. The device is constructed of an activator tape, containing an activator composition matrix, an indicating tape, containing an indicating composition matrix and an optional barrier matrix between the activator tape and the indicating tape. At least one matrix is a pressure sensitive adhesive. The activating composition, e.g. an organic acid such as citric acid, diffuses through the barrier and/or indicating matrix to continuously contact the indicating composition, e.g. an acid-based dye indicator such as 2,2',4,4',4'', -pentamethoxy triphenylmethanol, to produce a visually observable color change at the temperature being monitored. The color intensifies with time and temperature, as more activator composition diffuses into the indicating matrix. The matrices are water-impermeable and the device preferably possesses activation energy and rate constant values for the color change which are substantially the same as those for product decay. This allows accurate and continuously observable monitoring of the available shelf-life of the perishable product to which the device is adhered to.
摘要翻译：一种用于监测易腐产品的时间 - 温度存储历史，即保存期限的变色装置。该装置由活化剂带构成，其包含活化剂组合物基质，指示带，其含有指示组合物基质和活化剂带与指示带之间的可选屏障基质。至少一个基质是压敏粘合剂。活化组合物，例如有机酸如柠檬酸，扩散通过阻挡层和/或指示基质以连续接触指示组合物，例如，酸性染料指示剂，例如2,2'，4,4'，4“， - 三甲氧基三苯基甲醇，以在被监测的温度下产生视觉可见的颜色变化。随着时间和温度的增加，随着更多的活化剂组合物扩散到指示矩阵中，颜色变强。该基质是不透水的，并且该装置优选地具有与颜色变化基本相同的活化能并且对颜色变化进行速率常数值。这允许准确和连续地观察到对该装置所附着的易腐产品的可用货架期的监测。

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