NEW MATERIAL:The compound of formulaI[R1 and R2 are 1W12C alkyl or 7W9C aralkyl; X is H, halogen, 1W4C alkyl or 1W2C alkoxy; Y is H, halogen or 1W4C alkyl, provided that X and Y are not H at the same time; R3 is halogen, 1W4C alkyl or 1W2C alkoxy; n is 0W4; Z is 1W18C alkyl or (methyl, ethyl or chloro-substituted)aryl].
EXAMPLE: 3-Diethylamino-5-methyl-7-(p-acetylanilino)fluoran.
USE: A color developing substance for a recording material such as pressure-sensitive or heat-sensitive recording sheet, electrically recording heat-sensitive sheet, photo-sensitive recording sheet, etc.
PROCESS: The objective compound can be prepared by reacting 2-(2-hydroxy-4- amino)benzoyl benzoate of formula II with a diphenylamine derivative of formula III (R4 is H or 1W2C alkyl).
OMATSU MASAMOTO
OMURA HARUO
KANDA NOBUO
KONDOU MITSURU
