Patent ID: 8211338
Filing Date: 2012-07-03
Classification: C07D,C09K,G02B,G02C,G03C,Y10T

Abstract:
1. A photochromic material represented by one the following graphic formulae: wherein: (A) the group A represents indeno, Q comprises —CN, and said photochromic material is substantially free of substituents at the 12-position, or Q comprises —N (B) each i is an integer chosen from 0 to the total number of available positions and each R is independently chosen for each occurrence from: wherein (i) n is an integer chosen from 1, 2, and 3, and each U is independently chosen for each occurrence from —CH (ii) U′ is chosen from U, —O—, —S—, —S(O)—, —NH—, —N(X (f) the group represented by Formula ii or iii; wherein X 14 , X 15 , and X 16 are independently chosen for each occurrence from a lengthening agent L, hydrogen, C 1 -C 18 alkyl, phenyl or naphthyl, or X 14 and X 15 together form a ring of 5 to 8 carbon atoms; p is an integer chosen from 0, 1, or 2, and X 17 is independently chosen for each occurrence from a lengthening agent L, C 1 -C 18 alkyl, C 1 -C 18 alkoxy, or halogen; (g) immediately adjacent R groups together form a group represented by Formula vii, viii, or ix: wherein (i) W and W′ are independently chosen for each occurrence from —O—, —N(X (ii) X (iii) q is an integer chosen from 0, 1, 2, 3, and 4; and (h) a lengthening agent L represented by: (C) B and B′ are each independently chosen from: wherein (I) X (II) X (vi) B and B′ together form fluoren-9-ylidene, mono- or di-substituted fluoren-9-ylidene, or a saturated C