Photochromic compound, photochromic composition, photochromic article and spectacles
AssigneeHoya Lens Thailand Ltd.
InventorsHironori Kawakami, Aoi Matsue, Kei Kobayashi
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Abstract
Provided is a photochromic compound represented by the following General Formula 1. In General Formula 1, Az represents a monovalent azine ring group which is unsubstituted or has a substituent, L represents a divalent or higher linking group, D represents a photochromic dye structure, a and c each independently represent an integer of 1 or more, b represents 0 or an integer of 1 or more; and when there are a plurality of Az's in General Formula 1, the plurality of Az's may be the same as or different from each other, and when there are a plurality of L's in General Formula 1, the plurality of L's may be the same as or different from each other.
Claims16
A photochromic compound represented by the following General Formula 1:
- in General Formula 1, b is 0 or 1, wherein, when b is 1, L represents an arylene group which is unsubstituted or has a substituent or a heteroarylene group which is unsubstituted or has a substituent, D represents a photochromic dye structure, a and c each independently represent an integer of 1 or more;
- and when there are a plurality of Az's in General Formula 1, the plurality of Az's may be the same as or different from each other, and when b is 1 and a is 2 or more, in which case there are a plurality of L's in General Formula 1, the plurality of L's may be the same as or different from each other, and
- Az represents one of the following two azine ring groups:
- in the following azine ring group:
- R1 and R2 each represent a phenyl group and R3 represents a hydrogen atom;
- * represents a bonding position with L when b is 1 and a bonding position with D when b is 0, and
- in the following azine ring group:
- R1 and R2 each independently represent a phenyl group or a methoxy group;
- * represents a bonding position with L when b is 1 and a bonding position with D when b is 0.
Dependencies are inferred from the claim text.