Processes for the preparation of hydroxygallium phthalocyanine
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United States of America Patent
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May 28, 1996
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app pub date -
Apr 26, 1994
filing date -
Apr 26, 1994
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Abstract
A process for the preparation of Type V hydroxygallium phthalocyanine which comprises the in situ formation of an alkoxy-bridged gallium phthalocyanine dimer, hydrolyzing said alkoxy-bridged gallium phthalocyanine dimer to hydroxygallium phthalocyanine, and subsequently converting the hydroxygallium phthalocyanine product obtained to Type V hydroxygallium phthalocyanine.
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