| 摘要 |
PROBLEM TO BE SOLVED: To provide a polymerizable composition that gives a photochromic polymer excellent in storage stability, and color density and fading speed in photochromicity. SOLUTION: The polymerizable composition comprises a photochromic compound and a radical-polymerizable monomer with a viscosity of≥60 cP at 25°C. The polymerizable monomer contains a polymerizable monomer having an aromatic group e.g. 2,2-bis(4-methacryloyloxyethoxyphenyl)propane, 2,2-bis(4- methacryloyloxypentaethoxyphenyl)propane,α-methylstylene dimer or the like. The radical-polymerizable monomer having the aromatic group accounts for≥45 wt.% of the radical-polymerizable monomer. COPYRIGHT: (C)2004,JPO
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