Recording material

Details Recording material Recording material

G - Physics

03

C

96/186, 42/4, 96

G03C 1/498 (2006.01) B41M 5/136 (2006.01) B41M 5/145 (2006.01) B41M 5/26 (2006.01) B41M 5/323 (2006.01) B41M 5/327 (2006.01) C07D 311/82 (2006.01) C07D 495/10 (2006.01) B41M 5/30 (2006.01)

Patent

CA 1316740

NOVEL RECORDING MATERIAL Abstract of the Disclosure This invention relates to novel recording materials which employ color-forming di- and triarylmethane compounds possessing certain S-containing ring-closing moieties, namely, a 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.

525289

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