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US 3,945,999 AGranted
Process for preparing solid bis-(4-furfurylidenamino-phenyl)-methane
AssigneeRhone-Poulenc Inc.
InventorsMax Gruffaz, Bernard Rollet
Life of this patent
Estimating the term…
Abstract
Bis-(4-furfurylidenamino-phenyl)-methane, m.p. 90.degree.-91.degree.C., is made by reacting furfural with bis-(4-aminophenyl)-methane in diethyl ether. It is useful in photography.
Claims3
Process for the preparation of solid bis-(4-furfurylidenamino-phenyl)-methane, which comprises contacting furfural and bis-(4-amino-phenyl)-methane in a diethyl ether medium.
Dependencies are inferred from the claim text.