The new photochromic compounds according to the invention, of the spiro[indoline-[2,3']-benzoxazine] type, include at least one electron-withdrawing group attached to the benzoxazine structure in 5' or 6' position by a chain containing at least one ethylenic double bond. Application to ophthalmic optics.
根据本发明,新的光致变色化合物属于spiro[indoline-[2,3']-benzoxazine]类型,其中至少包括一个电子吸引基固定在含有至少一个
乙烯双键的链上的苯并噁嗪结构的5'或6'位置。应用于眼科光学。