Patent ID: 8944592
Filing Date: 2015-02-03
Classification: B29D,C08G,C08J,C08L,C09D,G02B,G02C

Abstract:
1. A readily-usable silicone hydrogel contact lens, comprising a silicone hydrogel material and a crosslinked hydrophilic coating thereon, wherein the crosslinked hydrophilic coating is attached onto the silicone hydrogel contact lens through neutral, hydroxyl-containing covalent linkages each of which is obtained by reacting, in a crosslinking reaction at a temperature from about 40° C. to about 140° C., one positively-charged azetidinium group with one functional group selected from the group consisting of amino groups, thiol groups and carboxylate ions, wherein the readily-usable silicone hydrogel contact lens has a surface hydrophilicity/wettability characterized by having an averaged water contact angle of about 90 degrees or less.