Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1976-11-10
1978-06-13
Jiles, Henry R.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
26032636, 2603434, 282 275, 428307, C07D30787
Patent
active
040948773
ABSTRACT:
Substituted 3,3-diphenylphthalides, useful as color precursors, particularly in the art of pressure-sensitive duplicating systems and heat-sensitive marking systems, are prepared by condensing substituted 2-benzoylbenzoic acids with substituted anilines.
REFERENCES:
patent: 3301870 (1967-01-01), Terzijska et al.
Crounse Nathan N.
Schmidt Paul J.
Jiles Henry R.
Miller Theodore C.
Schwartz Richard A.
Sterling Drug Inc.
Wyatt B. Woodrow
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