发明名称 |
Recording material and process of using |
摘要 |
This invention relates to novel recording materials which employ color-forming di- and triarylmethane compounds possessing certain S-containing ring-closing moieties, namely, or thiolactone, dithiolactone or thioether ring-closing moiety and to a method of forming color by contacting these dye precursor compounds with a Lewis acid material capable of opening the thiolactone, dithiolactone or thioether ring-closing moiety whereby the compound is rendered colored, that is, converted to its chromophore color.
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申请公布号 |
US5196297(A) |
申请公布日期 |
1993.03.23 |
申请号 |
US19860935534 |
申请日期 |
1986.12.05 |
申请人 |
POLAROID CORPORATION |
发明人 |
DOMBROWSKI, JR., EDWARD J.;FREEDMAN, JAMES R.;KING, PATRICK F. |
分类号 |
B41M5/136;B41M5/145;B41M5/30;B41M5/323;B41M5/327;C07D311/82;C07D495/10;G03C1/498 |
主分类号 |
B41M5/136 |
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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