Patent ID: 8705160
Filing Date: 2014-04-22
Classification: C07D,C09K,G02B,G02C,G03C,Y10T

Abstract:
1. A photochromic material represented by one of the following graphic formulae: wherein: (A) Q is —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 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, wherein wherein