| 摘要 |
PROBLEM TO BE SOLVED: To provide a low water content soft device having an excellent coloring concentration by containing a dye with appropriate solubility for a raw material or a mixture thereof, a composition for manufacturing the device, and a method of manufacturing them.SOLUTION: In a method of manufacturing a low water content soft device, a dye having an acidic group which is not a metal salt is mixed in a raw material. The dye is obtained by copolymerization, and is at least one selected from a monoazo-based dye, a disazo-based dye, an anthraquinone-based dye, a triphenylmethane-based dye, a nitro-based dye, a nitroso-based dye, a xanthene-based dye, an azine-based dye, and quinoline-based dye. |
