| 摘要 |
PURPOSE:To allow a compsn. to develop color and to fix it permanently at the same time by incorporating a spiropyran compd. represented by formula I, an oxim ester compd. represented by formula II, and a sensitizer in said compsn. CONSTITUTION:The compsn. contains the spiropyran compd. represented by formula I (Ar1, Ar2 are each an optionally substd. aromatic ring, and R1, R2, R3 are each H or 1-4C alkyl), an oxime ester compd. represented by formula II(R1, R2 each may be same or different, and each is 1-10C alkyl, optionally substd. phenyl, or each may combine with each other to form a ring, and R3 is 1-5C alkyl or optionally substd. aryl), and a sensitizer. Each component for forming said compsn. is used in an oxime/sensitizer weight ratio of 1/100-1/10, and 1-1,000pts.wt. of the spiropyran compd. is used per 100pts.wt. of the total of the oxime ester and the sensitizer. |
