Invention Grant
US09051332B1 Photochromic indeno-fused ring pyran compounds 有权
光致变色茚并稠环吡喃化合物

Photochromic indeno-fused ring pyran compounds
Abstract:
The present invention relates to photochromic indeno-fused ring pyran compounds represented by the following Formula (I-A): The present invention also relates to photochromic dichroic compounds, such as represented by Formula (I-A), in which (i) Z2 is a group N—R13 in which R13 is a group L, and (ii) optionally at least one R1 independently for each n is selected from a group L, in which the group L independently in each case is a lengthening group that provides the photochromic compound with dichroic properties, in accordance with some embodiments. The present invention also relates to photochromic articles, such as photochromic ophthalmic articles, that include one or more photochromic compounds according to the present invention, such as represented by Formula (I-A).
Public/Granted literature
Information query
Patent Agency Ranking
0/0