Organic compounds -- part of the class 532-570 series – Organic compounds – Nitriles
Patent
1989-11-20
1992-04-07
Brust, Joseph Paul
Organic compounds -- part of the class 532-570 series
Organic compounds
Nitriles
558419, 568928, 570129, C07C25531, C07C25550
Patent
active
051030381
ABSTRACT:
Novel tetrasubstituted dicyanomethylene cyclopentadienes are provided which have utility as electron-transport agents in positively-charged electrophotographic elements. The compounds are characterized by the formula: ##STR1## wherein: R.sub.1 and R.sub.4 are each independently selected from the group consisting of lower alkyl, halogen and cyano;
REFERENCES:
patent: 4082550 (1978-04-01), Yoerger
C. A. vol. 77 (1972), 4655e McBee et al.
C.A. 1972-1976 Formula Index, p. 9533F.
Chen Chin H.
Fox John L.
Hung Yann
Brust Joseph Paul
Eastman Kodak Company
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