This invention relates to novel naphthopyrans of the following formula:
These compounds (I) have interesting photochromic properties. Also related to this invention are host materials that contain such naphthopyran compounds, and articles such as ophthalmic lenses or other plastic transparencies that incorporate the naphthopyran compounds.
本发明涉及下式的新型
萘并
吡喃:
这些化合物(I)具有有趣的光致变色特性。与本发明相关的还有含有此类
萘并
吡喃化合物的主材料,以及含有此类
萘并
吡喃化合物的物品,如眼科镜片或其他塑料透明材料。