Patent ID: 8148445
Filing Date: 2012-04-03
Classification: C08F

Abstract:
1. A polymeric ophthalmic or otorhinolaryngological device material comprising a) 75 to 97% (w/w) of a monofunctional acrylate or methacrylate monomer of formula [1]: wherein B═O(CH R n=0-12; A=C and m=0-22; b) a difunctional acrylate or methacrylate cross-linking monomer of formula [2]: wherein R W, W′ independently=O(CH J=(CH d=0-12; a=1-12; and b=1-24; and c) 1 to 8% (w/w) of a macromer of formula [3]: wherein k=2-75; s=0 or 1; t=0-4; Y independently=H, C(O)CCH R and wherein the polymeric device material has an equilibrium water content (EWC) of 0.5 to 3%.