| 摘要 |
PURPOSE: A dichromatic dye composition is provided to absorb whole region of 400-700 nm visible rays by mixing 3 dyes in an optimal ratio and to ensure excellent profitability. CONSTITUTION: A dichromatic dye composition comprises a red dye represented by chemical formula 1, an orange dye represented by chemical formula 2, and blue dye represented by chemical formula 3. In chemical formulas 1, 2 and 3, R is -NH2 or -NO2; and M is H, Li, or Na. The used amount of the red dye is 10-40 weight%. The used amount of the orange dye is 10-40 weight%. The used amount of the blue dye is 40-70 weight%. |
