发明名称 |
Thermochromic color-memory composition |
摘要 |
A thermochromic color-memory compositions exhibiting high color contrast between high color density in a colored state and sufficiently low color density in a decolored state with high freedom of selection of the reaction medium, and highly useful as a thermochromic material. The thermochromic color-memory composition comprises a homogeneous solubilized mixture of essential three components of (a) an electron-donating color-developing organic compound, (b) an electron-accepting compound, and (c) a reaction medium for controlling a color reaction of the component (a) with the component (b); the component (c) being selected from aliphatic ketones of 10 to 22 total carbons and aryl alkyl ketones of 12 to 24 total carbons; and the composition changing the color thereof with a large hysteresis width ( DELTA H) of from 8 DEG C. to 80 DEG C.
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申请公布号 |
US5558699(A) |
申请公布日期 |
1996.09.24 |
申请号 |
US19940362984 |
申请日期 |
1994.12.23 |
申请人 |
THE PILOT INK CO., LTD. |
发明人 |
NAKASHIMA, AKIO;SHIBAHASHI, YUTAKA |
分类号 |
B41M5/30;C09D5/26;C09D11/00;(IPC1-7):C09D11/00 |
主分类号 |
B41M5/30 |
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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