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US 8,999,050 B2Granted
Ink containing anthraquinone based dye, dye used in the ink, and display
AssigneeMitsubishi Chemical Corporation
InventorsMio Ishida, Yasushi Shiga, Utako Takeda, Masami Kadowaki
Life of this patent
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Abstract
An object of the present invention is to provide an anthraquinone based dye having excellent solubility in a low polar solvent and having high absorption coefficient and high light resistance and an ink containing the same. The present invention relates to an ink comprising a specific anthraquinone based dye.
Claims13
An ink comprising an anthraquinone based dye represented by the following general formula (I) and a low polar solvent:
- wherein X represents a COOR3 group;
- and each of R1 to R3 independently represents an optionally substituted alkyl group having a carbon number of from 1 to 20, provided that at least one of R1 to R3 is an optionally substituted branched-chain alkyl group having a carbon number of from 4 to 20, and the anthraquinone ring may have an arbitrary substituent other than X, NHR1, and NHR2.
Dependencies are inferred from the claim text.