Patent ID: 8557892
Filing Date: 2013-10-15
Classification: A61L

Abstract:
1. A copolymeric ophthalmic device material formed by polymerizing a mixture comprising a) 40-80% (w/w) or more of an aryl acrylic hydrophobic monomer of formula (I) b) 0.1-3.9% (w/w) of a macromer of formula (II) wherein R R z is 2-11; and x indicates the number of repeating units and determines the molecular weight of the macromer and is such that the macromer has a molecular weight of about 300-about 3500; c) 5-30% (w/w) of a siloxane monomer of formula (III) wherein R T is nothing, O(CH b is 1-3; J is (CH K d) 5-30% (w/w) of a hydrophilic monomer selected from the group consisting of: hydroxy(C e) a cross-linking monomer; and f) a reactive UV absorber; wherein the copolymeric ophthalmic device material has an equilibrium water content at 35° C. of less than 4%.