Patent ID: 9588258
Date: 2017-03-07
CPC Classifications: C08F,C08G,G02B

Claim:
1. A silicone hydrogel comprising between about 8 and about 17 wt % silicon, an advancing dynamic contact angle of less than about 80° without surface modification formed from a reactive mixture comprising at least one hydroxyl substituted, monofunctional polydialkylsiloxane monomer having between 2 and 120 dialkylsiloxane repeating units; optionally one or more monofunctional siloxane monomer having 7 to 120 dialkylsiloxane repeating units, with the proviso that if said monofunctional, hydroxyl-containing siloxane monomer has less than 4 dialkylsiloxane repeating units or is of Formula IX X is O or NR R R Wherein p is 4-20, R R X is O or NR at least one monofunctional, siloxane monomer having 7 to 120 dialkylsiloxane repeating units is included; about 40-about 60 wt % of at least one slow reacting hydrophilic monomer; at least one hydroxyl containing hydrophilic monomer, wherein the molar ratio of hydroxyl containing components to the slow reacting hydrophilic monomer is between about 0.15 to about 0.4, wherein the reactive mixture is free of diluent.