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1. (WO2016087881) METHOD OF MANUFACTURING WETTABLE SILICONE HYDROGEL CONTACT LENSES

Pub. No.:    WO/2016/087881    International Application No.:    PCT/GB2015/053734
Publication Date: Jun 9, 2016 International Filing Date: Dec 4, 2015
IPC: B29D 11/00
G02B 1/04
Applicants: COOPERVISION INTERNATIONAL HOLDING COMPANY, LP
Inventors: BRUCE, Ian
CHEN, Charlie
FRITH, Robin
MARULLO, Rachel
MORSLEY, David Robert
SIDDIQUI, AKM Shahab
TRAN, Victoria
Title: METHOD OF MANUFACTURING WETTABLE SILICONE HYDROGEL CONTACT LENSES
Abstract:
A method for manufacturing a silicone hydrogel contact lens is described that comprises curing a polymerizable composition comprising at least one siloxane monomer and at least one hydrophilic vinyl-containing monomer in a contact lens mold comprising a molding surface having a coating comprising a hydrophilic polymer. The hydrophilic coating is not solubilized by the polymerizable composition during the curing step. The resulting polymeric lens body is removed from the mold, washed to remove any of the hydrophilic polymer that may have transferred from the mold surface to the lens during the curing or lens removal process, and packaged to provide a silicone hydrogel contact lens having a contact angle that is lower than what it would otherwise be had the lens been cured in the same contact lens mold lacking the hydrophilic coating.