G - Physics
02
F
31/105, 88/121,
G02F 2/02 (2006.01) C07D 498/10 (2006.01) G02C 7/02 (2006.01) G02C 7/16 (2006.01) G02F 1/01 (2006.01)
Patent
CA 1295122
ABSTRACT A photochromic lens is composed of a lens member made of a lens resin; and a photochromic layer applied on at least one side of the lens member and formed of a resin of a three-dimensional network structure. The latter resin contains a spirooxazine compound represented by the following general formula (I) along with a phenol resin and/or a phenolic compound: Image (I) wherein each of R1 and R3 means a hydrogen or halogen atom or a cyano, C1-6 alkyl or C1-6 alkoxy group, and R2 denotes a C1-6 alkyl group, ?CH2?nCOOH, ?CH2?nCN, substituted arylalkyl group or ?CH2?nCOOR in which R is a C1-6 alkyl group and n stands for an integer of 1 - 4. A hard coat layer may optionally be applied on the surface of the photochromic layer.
525455
Arakawa Noriyuki
Fujii Yasufumi
Machida Katsuichi
Sakagami Teruo
Kirby Eades Gale Baker
Kureha Kagaku Kogyo Kabushiki Kaisha
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