Patent
Xanthene-based compound and coloring liquid
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TLDR
In this article, a xanthene-based compound is characterized by being expressed by general formula (I) [wherein, R 1 is a 1-4C straight chain alkyl; R 2, R 3 are each independently H or a 1 4C straight-chain or branched chain alkoxy; and M is H, an alkali metal or NH 4 ].Abstract:
PROBLEM TO BE SOLVED: To provide a new xanthene-based compound useful as a coloring agent, etc., and coloring liquid containing the same and the xanthene-based compound having high light fastness of its color. SOLUTION: This xanthene-based compound is characterized by being expressed by general formula (I) [wherein, R 1 is a 1-4C straight chain alkyl; R 2 , R 3 are each independently H or a 1-4C straight chain or branched chain alkyl or a 1-4C straight chain or branched chain alkoxy; and M is H, an alkali metal or NH 4 ]. COPYRIGHT: (C)2006,JPO&NCIPIread more
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