Patent ID: 9372282
Filing Date: 2016-06-21
CPC Classification: A61F,A61L,C08F,G02B,G02C

Claim Text:
1. A polymeric ophthalmic or otorhinolaryngological device material comprising: at least 85 w/w % of a polystyrene of structure (I): wherein: n m p R R R A=independently, nothing or a connector moiety; B=independently, nothing or a connector moiety; n m p wherein, numerically, R wherein the polystyrene of structure (I) is formed by the polymerization of styrene monomers of the following structure (II): and wherein the polystyrene of structure (I) is formed from at least 90% but no greater than 97% of the monomers of structure (II) polymerized to form the device material; wherein the device material has a refractive index in the dry state of at least 1.47, an elongation of at least 150% and a Young's modulus of less than 6.0 MPa.