| 摘要 |
A photochromic curable composition comprising 100 parts by mass of polymerizable monomers which include 70 to100 mass% of polymerizable monomers having two to four (meth)acrylic groups and 0 to 30 mass% of a polymerizable monomer having one (meth)acrylic group and 0.01 to 20 parts by mass of a photochromic compound, whereinthe number of moles of the methacrylic group existentin the polymerizable monomer composition is 3 to 7 times the number of moles of the acrylic group. This composition can provide a lens having a photochromic coating which exhibits excellent photochromic properties, comprises a hard coat layer having sufficiently high adhesion and scratchresistance and has no delay in fading and has excellent storage stability.
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