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US 7,018,456 B2Granted
Phthalocyanine compound, water-base ink composition and colored material
AssigneeNippon Kayaku Kabushiki Kaisha
InventorsYoshinori Katoh, Isao Yamaguchi
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AssigneeNippon Kayaku Kabushiki Kaisha
InventorsYoshinori Katoh, Isao Yamaguchi
Estimating the term…
A metal phthalocyanine compound that is useful as a black colorant suitable for use in an ink-jet recording ink, a water-based ink composition containing the metal phthalocyanine compound, and a product colored with the metal phthalocyanine compound. In particular, a metal phthalocyanine compound having, as substituents, both an acylamino group and a carboxyethylamino group on the phthalocyanine structure, or the salt thereof is used as a black colorant. Recorded images formed by the use of this colorant are excellent in light fastness and water fastness and exhibit absorption in infrared and visible regions, so that highly effective utilization can be found in printing of, for example, bar codes which are available in near-infrared ray reading.
A metal phthalocyanine compound or the salt thereof having both acylamino group(s) and carboxyethylamino group(s) as substituents on the phthalocyanine structure.
A phthalocyanine compound or the salt thereof obtained by reacting metal aminophthalocyanines with an acylating agent and a carboxyethylating agent.
A method for manufacturing a phthalocyanine compound or the salt thereof by acylating and carboxyethylating aminophthalocyanines.
A black metal phthalocyanine colorant which is obtained by acylating and carboxyethylating aminophthalocyanines.
Dependencies are inferred from the claim text.