Toners and developers containing quaternary phosphonium 3,5-Di-t

Details Toners and developers containing quaternary phosphonium 3,5-Di-t Toners and developers containing quaternary phosphonium 3,5-Di-t

1994-12-21

1996-04-16

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 900

Patent

active

055081401

ABSTRACT:
New electrostatographic toners and developers are provided containing charge-control agents comprising quaternary phosphonium salts having the structure: ##STR1## wherein R.sup.1 and R.sup.2 are tertiary-alkyl containing from 4 to 8 carbon atoms; R.sup.3 is selected from an unsubstituted alkyl group having from 1 to 24 carbon atoms; a substituted alkyl group having from 1 to 24 carbon atoms substituted with one or more hydroxy-, carboxy, alkoxy-, carboalkoxy-, acyloxy-, nitro-, cyano-, keto- or halo-groups; a cycloalkyl group having from 3 to 7 carbon atoms; an alkaryl group having from 1 to 20 carbon atoms in the alkyl group and 6 to 14 carbon atoms in the aryl group; an aralkyl group having from 1 to 4 carbon atoms in the alkyl group and 6 to 14 carbon atoms in the aryl group wherein the aryl group may be unsubstituted or substituted with one or more alkyl-, hydroxy-, carboxy-, alkoxy-, carboalkoxy-, acyloxy-, amino-, nitro-, cyano-, keto- or halo-groups; phenyl or substituted phenyl; and

REFERENCES:
patent: 4496643 (1985-01-01), Wilson et al.
patent: 4537848 (1985-08-01), Yourd, III et al.
patent: 4812380 (1989-03-01), Bugner et al.
patent: 4980258 (1990-12-01), Aoki et al.

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