Importance

Loading Importance Indicators...

Abstract

Various non-limiting embodiments of the present invention relate to photochromic materials which include a haloalkyl group. More particularly, various non-limiting embodiments disclosed herein provide photochromic materials including an indeno-fused naphthopyran, such as, an indeno[2',3':3,4]naphtho[1,2-b] pyran, and a haloalkyl group bonded at the 13-position thereof, wherein the haloalkyl group is a perhalogenated group or a group represented by --O(CH.sub.2).sub.a(CX.sub.2).sub.bCT.sub.3, wherein T is a halogen, each X is independently hydrogen or halogen, a is an integer ranging from 1 to 10, and b is an integer ranging from 1 to 10. Other non-limiting embodiments disclosed herein provide photochromic composition and photochromic articles, such as, but not limited to ophthalmic lens, which include the disclosed photochromic materials and methods of making the same.

Loading the Abstract Image...

First Claim