Patent ID: 9012581
Filing Date: 2015-04-21
Classification: C08F,C08L,G02B,Y10S

Abstract:
1. A polymeric ophthalmic or otorhinolaryngological device material comprising a) 70 to 98% (w/w) of a monofunctional monomer of formula [1]: wherein B═—O(CH R n=0-12; A=C m=0-18; b) a difunctional 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) 0.5 to 15% (w/w) of a copolymer additive of formula [3]: wherein for formula [3]: D=OCH E=nothing, O(CH n=1-5; if D≠C(CH if E=H or OH, then F=nothing; if E≠H or OH, then F═C(═O)C(CH R t, u, and v represent molar fraction values and t+u+v=1; t and u independently=0-0.95; provided that t+u=0.8-0.95; v=0.05-0.2; W═H, CH y x=1-100; wherein the polymeric device material has an equilibrium water content of 0.5-3.0%.