Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Patent
1996-05-10
1997-10-28
Rodee, Christopher D.
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
G03G 9087
Patent
active
056816804
ABSTRACT:
There is provided a compound, useful in electrostatographic processes in the toner composition along with a polymeric binder, having the general structure: ##STR1## wherein R.sup.1 is selected from the group consisting of alkylene; arylene; arylenedialkylene; alkylenediarylene; oxydialkylene; and substituted or unsubstituted oxydiarylene; and
R.sup.2 and R.sup.3, which can be the same or different, are independently selected from the group consisting of alkyl containing from 1 to 20 carbons; cycloalkyl containing from 3 to 18 carbons; unsubstituted aromatic ring systems; or aromatic ring systems substituted with one or more alkyl, hydroxy, alkoxy, carboxy, carboalkoxy, nitro, halo, cyano, amino, dialkylamino, acyl, trihalomethyl or alkylsulfonyl; heteroaromatic ring systems; said ring systems having a solitary ring or 2 to 3 linked or fused rings, and containing from 3 to 34 carbons; and R.sup.3 may also be ethenyl, unsubstituted or substituted with alkyl containing from 1 to 20 carbons or aryl containing from 5 to 10 carbons or aryl substituted with alkyl, hydroxy, carboxy, carboalkoxy, nitro, halo, cyano, amino, dialkylamino, acyl, trihalomethyl, or alkylsulfonyl.
The described charge control agents are negative charge control agents and are essentially colorless making them particularly useful in toner compositions for color electrophotography. Thus, in another aspect of the invention, there is provided a toner composition including the charge control agent and a polymeric binder.
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Alexandrovich Peter S.
Wilson John C.
Eastman Kodak Company
Everett John R.
Rodee Christopher D.
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