Hydroxygallium phthalocyanine imaging members and processes
AssigneeXerox Corporation
InventorsJames D. Mayo, James M. Duff, Cheng K. Hsiao, Sandra J. Gardner, Barkev Keoshkerian
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Abstract
A process for the preparation of hydroxygallium phthalocyanine which comprises hydrolysis of halogallium phthalocyanine precursor to a hydroxygallium phthalocyanine, and conversion of said resulting hydroxygallium phthalocyanine to Type V hydroxygallium phthalocyanine by contacting said resulting hydroxygallium phthalocyanine with an organic solvent; and wherein said precursor halogallium phthalocyanine is obtained by the reaction of gallium halide with diiminoisoindolene in an organic solvent.
Claims28
A process for the preparation of hydroxygallium phthalocyanine consisting essentially of the hydrolysis of halogallium phthalocyanine precursor to a hydroxygallium phthalocyanine, and conversion of said resulting hydroxygallium phthalocyanine to Type V hydroxygallium phthalocyanine by contacting said resulting hydroxygallium phthalocyanine with the organic solvent N,N-dimethylformamide, pyridine, dimethylsulfoxide, quinoline, 1-chloronaphthalene, N-methylpyrrolidone, or mixtures thereof, and wherein said hydroxygallium phthalocyanine Type V contains halide in an amount of from about 0.001 percent to about 0.1 percent;
- and wherein said precursor halogallium phthalocyanine is obtained by the reaction of gallium halide with diiminoisoindolene in an organic solvent.
A process in accordance with claim 8 wherein there results hydroxygallium phthalocyanine Type V with chlorine levels of from about 0.001 percent to about 0.1 percent of the total weight of said Type V.
A process for the preparation of hydroxygallium phthalocyanine Type V which comprises the reaction of gallium chloride and 1,3-diiminoisoindolene in the presence of N-methyl pyrrolidone resulting in chlorogallium phthalocyanine Type I;
- hydrolyzing said chlorogallium phthalocyanine to hydroxy gallium phthalocyanine Type I;
- and contacting said Type I with N,N-dimethylformamide.
Dependencies are inferred from the claim text.