申请人:Enichem Synthesis, S.p.A.
公开号:US05186867A1
公开(公告)日:1993-02-16
New compounds of the spiro-indoline-oxazine class possessing photochromatic and photosensitizing charecteristics are definable by the general formula (I): ##STR1## where the substituents R, R.sup.1 -R.sup.7 and A are as defined in the description. The process for preparing the compounds (I) is described, as is their use as photochromic agents able to confer photochromatic characteristics on the articles in which they are incorporated, and as photosensitizing agents.
新的螺-吲哚啉-氧杂化合物,具有光致变色和光敏特性,可用通式(I)定义:##STR1##其中取代基R,R.sup.1 -R.sup.7和A的定义如说明书中所述。描述了制备化合物(I)的过程,以及它们作为光致变色剂的用途,能够使它们所包含的物品具有光致变色特性,并作为光敏剂使用。