5H-dibenzo(A,D) cycloheptanylidene derivative and 5H-dibenzo (A,

Details 5H-dibenzo(A,D) cycloheptanylidene derivative and 5H-dibenzo (A, 5H-dibenzo(A,D) cycloheptanylidene derivative and 5H-dibenzo (A,

1989-05-10

1991-06-18

Raymond, Girard L.

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

Radiation-sensitive composition or product

430 58, 430 72, 430 73, 430 74, 430 75, 430 76, 430 78, 546143, 546159, 546285, 549 68, 549480, 564318, 564391, G03G 506, G03G 509, C07C21131

Patent

active

050249126

ABSTRACT:
A 5H-dibenzo [a,d] cycloheptenylidene derivative and a 5H-dibenzo [1,d] cycloheptenylidene derivative represented by the following general formula [I]: ##STR1## wherein X is --CH.sub.2 --CH.sub.2 -- or --CH.dbd.CH--; R.sub.1 and R.sub.2 are alkyl groups, aralkyl groups, aromatic groups or heterocyclic groups, R.sub.3 and R.sub.4 are hydrogen atoms, alkyl groups, alkoxy groups or halogen atoms; and Ar.sub.1 is an aromatic group or a heterocyclic group, process for producing those derivatives, and electrophotographic photosensitive member using the same.

REFERENCES:
patent: 3472869 (1969-10-01), Humber
patent: 3533786 (1970-10-01), Looker
patent: 4070373 (1978-01-01), Winter et al.
patent: 4245021 (1981-01-01), Kazami et al.
patent: 4579799 (1986-04-01), Katagiri et al.
Streitweiser, A., Murdock, J. R., Haefelinger, G., and Chang, C. J., "Acidity of Hydrocarbons XLVI. Equilibrium Ion Pair Acidities of Mono-Di-Triaryl Methanes Toward Cesium Cyclohexamide", J.A.C.S., 95:13, pp. 4248-4254 (Jun. 27, 1973).

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