14278-96-7Relevant articles and documents
Xanthene pigment, coloring composition containing same, colorant for color filter, and color filter
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Paragraph 0191-0192, (2021/05/19)
The invention provides a xanthene pigment, a coloring composition containing the xanthene pigment, a colorant for a color filter, and a color filter. The present invention provides a xanthene pigment having excellent color characteristics (brightness, contrast ratio, etc.), solubility, and heat resistance, a coloring composition containing the pigment, a colorant for a color filter containing the pigment or the coloring composition, and a color filter. A xanthene dye represented by general formula (1). [In formula (1), R1 represents an optionally substituted alkylene group, and R1a represents a halogen atom,-OH,-CN,-OCH3,-NO2, a sulfonic acid group, a sulfonyl group, a carboxyl group, a carbonyl group, or the like. And R2 represents a group different from R1-R1a and represents an optionally substituted alkyl group. And R3 represents-H, a halogen atom,-NO2 or an alkyl group. R4 represents-SO3-,-CO2-, an alkyl group, or the like; n represents an integer of 1-4, An represents an anion, k represents an integer of 1-3, and b represents an integer of 0-3.