The invention is directed a photochromic composition comprising at least one photochromic compound, and at least one radically polymerizable monomer, wherein said at least one radically polymerizable monomer is a polymerizable multifunctional monomer comprising at least three reactive groups, said photochromic composition further comprises at least one bifunctional acrylate, or at least one bifunctional methacrylate or a mixture thereof, wherein said bifunctional acrylate or methacrylate, respectively, has the chemical formula (I):
wherein R is H or CH3, A is alkylene with 3 to 6 carbon atoms, and n is an integer of 8 to 12, preferably of 9 to 10. The invention is further directed to a spectacle lens, a spectacle, and a process for manufacturing a spectacle lens.
本发明涉及一种光致变色组合物,该组合物包含至少一种光致变色化合物和至少一种可辐射聚合单体,其中所述至少一种可辐射聚合单体为包含至少三个活性基团的可聚合多功能单体,所述光致变色组合物还包含至少一种双官能
丙烯酸酯或至少一种双官能
甲基丙烯酸酯或其混合物,其中所述双官能
丙烯酸酯或
甲基丙烯酸酯分别具有
化学式(I):
其中 R 是 H 或
CH3,A 是含 3 至 6 个碳原子的亚烷基,n 是 8 至 12 的整数,最好是 9 至 10。本发明还涉及一种眼镜片、一种眼镜和一种制造眼镜片的工艺。