发明名称 |
TTI indicator with balanced photochemical processes |
摘要 |
The invention relates to a time temperature indicator comprising a) at least one photo-chromic colorant introduced into and/or atop a matrix substrate and charged by exposure to UV light; b) at least a transparent colorless or a transparent colored light absorbing protecting layer adhered to the underlying layer a) which contains the photo-chromic colorant; characterized in that the light absorbing protecting layer comprises 1-50 wt % of an UV light absorber or an UV light absorber mixture and 0.1-10 wt % of an optical brightener wherein the weight ratio of the UV light absorber and optical brightener is 0.1-10. |
申请公布号 |
US8403558(B2) |
申请公布日期 |
2013.03.26 |
申请号 |
US20070520613 |
申请日期 |
2007.12.17 |
申请人 |
FUCHS ANDRE;CARRIGAN ANNE VERONICA;BIZERBA GMBH & CO. KG |
发明人 |
FUCHS ANDRE;CARRIGAN ANNE VERONICA |
分类号 |
G01K3/00;G02B5/23 |
主分类号 |
G01K3/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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