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1. 发明授权

US4729671A Temperature control indicator unit 失效
标题翻译：温度控制指示灯单元
公开(公告)号：US4729671A
公开(公告)日：1988-03-08
申请号：US948156
申请日：1986-12-31
申请人： Makoto Asano , Iwao Chiba , Masumi Iemura
发明人： Makoto Asano , Iwao Chiba , Masumi Iemura
IPC分类号： G01K11/16 , B32B33/00 , C09K9/02 , G01K11/06 , G09F3/02
CPC分类号： G01K11/06
摘要： This invention relates to a temperature control indicator unit comprising a substrate having supported thereon (a) microcapsules enclosing a hydrophobic organic compound possessing an arbitrarily selected melting point, (b) a methine dye and (c) an oxidizing material. More particularly, a unit made by combining an irreversibly color-developing methine dye and an oxidizing material with microcapsules enclosing a hydrophobic organic compound possessing a predetermined melting point and supporting them on a substrate is used for temperature control purposes. A suitable measure is taken, preferably at or below the desired control temperature, to break at least a part of the microcapsules of the unit and thereby produce fissures or the like in the microcapsule membrane. Then, the unit is stored or transported together with an article to be placed under temperature control. As a result, if the article is exposed to temperatures exceeding the desired control temperature, the non-volatile organic compound present in the broken microcapsules melts and diffuses out. This brings the methine dye into contact with the oxidizing material present in proximity thereto and causes an irreversible color development of the methine dye. Thus, the occurrence of abnormal temperature control conditions can be detected by observing such color development.
摘要翻译：本发明涉及一种温度控制指示器单元，其包括其上支撑有基底（a）包封具有任意选择的熔点的疏水性有机化合物的微胶囊，（b）次甲基染料和（c）氧化物质。更具体地，使用通过将不可逆显色次甲基染料和氧化材料与包封具有预定熔点并将其支撑在基底上的疏水性有机化合物的微胶囊组合而制成的单元用于温度控制目的。采取适当的措施，优选等于或低于所需控制温度，以破坏单元的至少一部分微胶囊，从而在微胶囊膜中产生裂缝等。然后，将该单元与要置于温度控制下的物品一起储存或运输。结果，如果制品暴露在超过所需控制温度的温度下，则存在于破碎的微胶囊中的非挥发性有机化合物熔化并扩散出来。这使得次甲基染料与其附近存在的氧化物接触，并引起次甲基染料的不可逆显色。因此，可以通过观察这种显色来检测出异常的温度控制条件。

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