Patent ID: 9657131
Date: 2017-05-23
CPC Classifications: A61F,C08F,C08G,C08L,G02B

Claim:
1. An ophthalmic lens formed of a polymer having a young's modulus of 0.3-1.0MPa and a stress relaxation rate of 10-20%, where the polymer is obtained from a polymerizable composition including a polysiloxane-based macromonomer having at least one polymerizable group and a polysiloxane chain having a siloxane unit as a repeating unit, wherein the polysiloxane-based macromonomer has: the polysiloxane-based macromonomer has a value β calculated according to the following formula (B) being held within a range from 0.5 to 5.0: the at least one polymerizable group is bonded to the polysiloxane chain constituting a main chain of a molecule of the polysiloxane-based macromonomer, through at least one urethane bond.