LOW TEMPERATURE IRREVERSIBLE THERMOCHROMIC COMPOSITIONS
    3.
    发明公开
    LOW TEMPERATURE IRREVERSIBLE THERMOCHROMIC COMPOSITIONS 审中-公开
    不可逆的热血红素NIEDERTEMPERATURZUSAMMENSETZUNGEN

    公开(公告)号:EP2288641A1

    公开(公告)日:2011-03-02

    申请号:EP09743695.0

    申请日:2009-05-07

    IPC分类号: C08G61/00 G01N31/22

    摘要: Provided herein are novel polythiophene compounds having polyalkoxyl sidechains and low temperature irreversible upon activation (I UA) thermochromic compounds/compositions thereof The IUA thermochromic compounds or compositions are activated and exhibit an IUA color by heating to or above a reversible thermochromic transition temperature (RTTT) and cooling to or below an irreversible thermochromic transition temperature (IRTTT) in less than 2 seconds The activated IUA thermochromic compounds or compositions will retain their IUA color as long as the compounds or compositions are kept at or below about 5 degreeC below the IRTTT The IUA thermochromic compounds/composition can be used to prepare IUA thermochromic indicators which can monitor subjects stored below a pre-determined temperature and detect the subjects that have been exposed to a temperature above the pre-determined temperature.