Use of colorless highly fluorine-substituted phosphonium compoun

Details Use of colorless highly fluorine-substituted phosphonium compoun Use of colorless highly fluorine-substituted phosphonium compoun

1990-04-12

1992-09-15

Goodrow, John

Radiation imagery chemistry: process, composition, or product th

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

Post imaging process, finishing, or perfecting composition...

430137, G03G 9097

Patent

active

051477483

ABSTRACT:
Use of colorless highly fluorine-substituted phosphonium compounds as charge control agents for electrophotographic recording processes
Use of highly fluorine-substituted phosphonium compounds of the formula (I) ##STR1## in which R.sub.1 to R.sub.4 are hydrogen atoms or organic radicals, at least one of the radicals R.sub.1 to R.sub.4 being a fluorine-substituted, unsaturated and/or saturated alkyl radical having 1 to 30 carbon atoms and 3 to 50 fluorine atoms, which can contain further substituents, or a fluorine-substituted aryl radical or an aralkyl radical which is fluorine-substituted on the aromatic ring, it being possible for the aryl or aralkyl radical to be additionally substituted on the aromatic ring, and in the case of an aralkyl radical the alkyl bridge between the phosphorus atom and the aromatic ring contains 1 to 30 carbon atoms, and not more than three of the radicals R.sub.1 and R.sub.4, independently of one another, are hydrogen atoms, unsaturated or saturated, substituted or unsubstituted alkyl radicals having 1 to 30 carbon atoms, aryl or aralkyl radicals which can be substituted on the aromatic ring, and X.sup.- is an anion, it being possible for the radicals R.sub.1 to R.sub.4 to contain a COO.sup.- or SO.sub.3.sup.- group as substituent and X.sup. - in this case becoming superfluous, individually or in combination as colorless charge control agents having a positive or negative control effect in toners and developers for electrophotographic recording processes.

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patent: 4684596 (1987-08-01), Bonser et al.
patent: 4837391 (1989-06-01), Anderson et al.
patent: 4840864 (1989-06-01), Bugner et al.

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