Abstract: The invention provides a photochromic dye of a structure containing a common structure of spirooxazine series compounds and three substituents. The photochromic dye according to the invention exhibits characteristics of a high heat stability, good light fatigue resistance, high sensitivity, extremely degradation rate and the like. This photochromic dye can be formulated with suitable organic solvents and used as photochromic functional colorants under UV light excitation. Further, this photochromic dye can be synthesized and purified in simple steps with cheap raw materials and hence at a greatly lowered production cost.

Abstract: The present invention relates to a textile ink-jet printing-purpose disperse dye micro-emulsion agent, which uses dispersing agents such as sodium polynaphthalene formaldehyde sulfonates, surfactants such as POE NP ether, and silicone derivative emulsion-type defoaming agents and bactericidal fungicidal agents for ink-jet CMYK four-color disperse dyes forming a stable dye micro-emulsion through micro-jetting homogenized emulsifier. This invention focuses on the disperse dyes suitable for polymers, applying a low-cost environmentally protective micro-emulsion agent in the ink protection technology so that the O/W model becomes a stable and homogenized system. This gives the textile ink-jet printing-purpose disperse dye micro-emulsion agent, with a dye particle diameter lying below 300 nm and high storage stability, rinse, sublimation, and light fastness over 4.