Photochromic materials based on naphthopyran derivatives with reactive substituents

Abstract From the Canadian patent

Various non-limiting embodiments of the present disclosure relate to photochromic materials comprising a reactive substituent. For example the , present disclosure contemplates photochromic materials such as photochromic , naphthopyrans and indeno-fused naphthopyrans having a reactive substituent comprising a reactive moiety linked to the photochromic naphthopyran by one or more linking groups. In certain non-limiting embodiments the reactive moiety , comprises a polymerizable moiety. In other non-limiting embodiments the , reactive moiety comprises a nucleophilic moiety or an electrophilic moiety. Other non-limiting embodiments of the present disclosure relate to photochromic …