Patent ID: 8466209

Claim:
A copolymeric ophthalmic device material formed by polymerizing a mixture comprising a) 30-60% (w/w) of an aryl acrylic hydrophobic monomer of formula (I) wherein: A is H; B is (CH 2 ) m , S(CH 2 ) u , O(CH 2 ) v , or [O(CH 2 ) 2 ] n ; u is 1-4; v is 1-4; C is (CH 2 ) w ; m is 1-6; n is 1-10; Y is nothing, O, S, or NR, provided that if Y is O, S, or NR, then B is (CH 2 ) m ; R is H, CH 3 , C n H 2n+1 (n=1-10), iso-OC 3 H 7 , C 6 H 5 , or CH 2 C 6 H 5 ; w is 0-6, provided that m+w≦8; and D is H, C 1 -C 4 alkyl, C 1 -C 4 alkoxy, C 6 H 5 , CH 2 C 6 H 5 , Br, F, Cl, or I; b) 0.1-3.9% (w/w) of a macromer of formula (II) wherein R 1 and R 2 are independently —CH 3 , —CH 2 CH 3 , —CH 2 CH 2 CH 2 CH 3 , CH 2 CH 2 CH 2 CH 3 , —C 6 H 5 , —CH 2 C 6 H 5 , —CH 2 CH 2 C 6 H 5 , —CH 2 CH 2 CH 2 C 6 H 5 , or —CH 2 CH 2 CH 2 CH 2 C 6 H 5 ; R 3 is H, CH 3 , or CH 2 CH 3 ; 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) 10-40% (w/w) of 2-ethylhexyl acrylate or n-octyl acrylate; d) 5-30% (w/w) of a hydrophilic monomer selected from the group consisting of: hydroxy(C 2 -C 4 alkyl)methacrylates, glycerol methacrylate, and N-vinyl pyrrolidone; 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%.