| 摘要 |
<p>The invention concerns a composition comprising: 35 to 70 parts by weight of one or several monomers (I) of formula (1) wherein: R1 and R2 represent H or CH3; A represents a divalent radical of formula (2) or (3) wherein: m1 and m2 are each an integer ranging between 4 and 20; 5 to 50 parts by weight of a monomer (II) comprising at least a urethane unit and at least two (meth)acrylate functions; 5 to 40 parts by weight of a monomer (III) with high Abbe number and comprising one or several methacrylate function(s), the total of monomers (I), (II) and (III) representing 100 parts by weight. The invention is useful for making optical and ophthalmic articles.</p> |
