Black perylene-based pigment and process for producing the same
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United States of America Patent
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Aug 1, 2006
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app pub date -
Jan 23, 2004
filing date -
Jul 27, 2001
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Abstract
A black perylene-based pigment comprising a solid solution obtained by calcining a mixture of at least two compounds selected from the group consisting of anhydrides of perylene tetracarboxylic acid, diimide derivatives of perylene tetracarboxylic acid and diimide derivatives of perylene diiminodicarboxylic acid, exhibits an excellent blackness, an excellent heat resistance and an excellent weather fastness as well as a high resistance and a high safety.
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