Photochromic composition and method producing photochromic cured product
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United States of America Patent
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Apr 15, 1997
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N/A
app pub date -
Apr 25, 1995
filing date -
Apr 27, 1994
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Abstract
A photochromic composition which can be polymerized and cured upon irradiation with active energy rays such as ultraviolet rays to exhibit favorable photochromic property. The photochromic composition comprises 100 parts by weight of a radical polymerizable monomer, 0.001 to 0.2 parts by weight of a photochromic compound, and 0.01 to 1 part by weight of a photo polymerization 1.0 initiator. A photochromic cured product is obtained by irradiating the photochromic composition with the light which contains ultraviolet rays.
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