Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1978-09-18
1980-02-05
Trousof, Natalie
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
546 94, 427151, 428307, 428914, 282 275, C07D30783
Patent
active
041872231
ABSTRACT:
3-[4-(Disubstituted-amino)phenyl] or (9-julolidinyl)-3-(diphenylamino)phthalides useful as color formers in pressure-sensitive and thermal marking systems are prepared by reaction of 2-[4-(disubstituted-amino)benzoyl] or (9-julolidinyl-carbonyl)benzoic acids with diphenylamines.
REFERENCES:
patent: 2997481 (1961-08-01), Wheeler et al.
Valter et al., Chem. Abstracts 84, 58409r (1976).
Hung William M.
Schmidt Paul J.
DuPont Paul E.
Fan Jane T.
Sterling Drug Inc.
Trousof Natalie
Wyatt B. Woodrow
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