Benz (c) fluoran compounds and recording sheet containing them

Details Benz (c) fluoran compounds and recording sheet containing them Benz (c) fluoran compounds and recording sheet containing them

1974-05-20

1976-03-30

Milestone, Norma S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

282 275, C07D31184

Patent

active

039474712

ABSTRACT:
Novel benz[c]fluoran compounds such as 2-phenylamino-8-diethylamino-benz[c]fluoran, 2-(2',4',6'-trimethylphenylamino)-8-diethylamino-benz[c]fluoran and N-[8-diethylaminobenz[c]fluoran-2-yl]-N-[6-diethylaminofluoran-2-yl]amine, which are useful as a coloring material for record material systems such as pressure-sensitive copying paper or heat-sensitive copying paper, wherein colored images formed by an electron-donoracceptor color-forming reaction between coloring material and acidic material.

REFERENCES:
patent: 1194380 (1916-08-01), Hagenbach
patent: 3654314 (1972-04-01), Farber et al.
patent: 3669711 (1972-06-01), Kimura et al.
patent: 3691203 (1972-09-01), Koga et al.
patent: 3849164 (1974-11-01), Schwab et al.

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