Patent ID: 8748634
Filing Date: 2014-06-10
Classification: C07D,C09K,G02B,G03C

Abstract:
1. A photochromic material represented by the following structure: wherein: B and B′ are each independently: a metallocenyl group; an aryl group that is mono-substituted with a reactive substituent or a compatibilizing substituent; 9-julolidinyl, an unsubstituted, mono-, di- or tri-substituted aryl group chosen from phenyl and naphthyl, an unsubstituted, mono- or di-substituted heteroaromatic group chosen from pyridyl, furanyl, benzofuran-2-yl, benzofuran-3-yl, thienyl, benzothien-2-yl, benzothien-3-yl, dibenzofuranyl, dibenzothienyl, carbazoyl, benzopyridyl, indolinyl or fluorenyl, wherein the aryl and heteroaromatic substituents are each independently: hydroxy, aryl, mono- or di-(C an unsubstituted or mono-substituted group chosen from pyrazolyl, imidazolyl, pyrazolinyl, imidazolinyl, pyrrolidino, phenothiazinyl, phenoxazinyl, phenazinyl and acridinyl, said wherein said substituents are each independently C a 4-substituted phenyl, the substituent being a dicarboxylic acid residue, a diamine residue, an amino alcohol residue, a polyol residue, —(CF a group represented by: wherein P is —CH B and B′ taken together form a fluoren-9-ylidene or mono- or di-substituted fluoren-9-ylidene, wherein said fluoren-9-ylidene substituents are each independently C R hydrogen, C —OR a reactive substituent or a compatibilizing substituent; a 4-substituted phenyl, the substituent being a dicarboxylic acid residue, a diamine residue, an amino alcohol residue, a polyol residue, —(CH —N(R a nitrogen containing ring represented by: wherein each —V— is independently chosen for each occurrence from —CH and r is an integer ranging from 0 to 3, provided that if r is 0, then —W— is the same as —V; or a group represented by: wherein each R R wherein Y is selected from the group consisting of —CH wherein R R R R R wherein —Z is —C(O)— or —CH