| 简介 |
PROBLEM TO BE SOLVED : To provide a color filter giving high brightness and contrast; and a pigment derivative and coloring composition to be used thereto.SOLUTION : This pigment derivative is expressed by formula : P-L. In formula, P is a phthalocyanine pigment residue; m is an integer of 1 to 4; L is a group represented by formulae (a), (b) or (c); in formulae (a) to (c), X, Xand Xare each -SO- or the like; Y, Yand Yare each -NH- or the like; Zis -CONH- or the like; n is an integer of 0 to 10; R, R, R, R, Rand Rare each a group represented by -(CH)NRR; Rand Rare each an alkyl group or the like, provided that Rand Rmay come together to form a ring; and m is an integer of 0 to 10. |
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