Patent ID: 8277700
Filing Date: 2012-10-02
Classification: C07D,C08F,C09K

Abstract:
1. A process for preparing a photochromic polymeric composition, comprising polymerizing a reaction mixture M comprising: (A) 0.1-20 wt. % of at least one compound of formula (I) wherein R R R (B) 80-99.9 wt. % of a polymerizable component; and (C) 0.001-1 wt. % of a photochromic dye, so as to obtain the photochromic polymeric composition; wherein the photochromic dye is a naphthopyran photochromic dye represented by at least one formula selected from the group consisting of formula (II) and formula (III): wherein, variables A, B, X, and Y in the formula (II) and (III) are each independently C