Patent ID: 8476389

Claim:
A silicone hydrogel obtained by polymerizing a polymerization mix containing a plurality of monomers containing (a) about 30 to about 98 weight % of at least one silicone monomer represented by the general formulae (b1), (b2): wherein in the chemical formulae (b1) or (b2), R 1 independently represents a hydrogen atom or a methyl group; R 5 to R 9 independently represent alkyl groups with between 1 and 20 carbon atoms or aryl groups with between 6 and 20 carbon atoms; and n is a natural number in the range from 1 to 50); and (b) about 1 to about 50 weight % of at least one non-silicone (meth)acrylamide monomer represented by wherein R 1 is hydrogen or methyl; at least one of R 14 and R 15 is a C1-20 alkyl group substituted with at least one hydroxyl group, and with the proviso that when; i) one of R 14 and R 15 is hydrogen ii) the other of R 14 and R 15 is substituted with at least two hydroxyl groups, wherein said weight percent based upon total amount of monomer components and polymer components in the monomer mix and wherein the silicone (meth)acrylamide monomer and non-silicone (meth)acrylamide monomer are present in the monomer mix in an amount of about 90% or more by weight with respect to a total amount of the monomers in the monomer mix.