发明名称 |
METHODS FOR MAKING SILICONE HYDROGEL LENSES FROM WATER-BASED LENS FORMULATIONS |
摘要 |
Described herein are methods for producing silicone hydrogel lenses. The methods involve introducing into a mold a water-based lens-forming composition, curing the lens- forming composition in a mold to form the lens, and removing the lens from the mold. The lens-forming composition comprises (i) a polysiloxane-containing vinylic monomer or macromer, (ii) at least one hydrophilic vinylic monomer, (iii) a surfactant, and, and (iv) water. The surfactant is polysiloxane-containing surfactant that is free of actinically- polymerizable groups and is a copolymer having from about 10% to about 40% by weight of one or more polysiloxane segments and from about 90% to about 60% by weight hydrophilic units and/or segments. The methods permit the use of water as a solvent and reduce the need for organic solvents. Additionally, the lenses produced by the methods can have improved properties such oxygen permeability. |
申请公布号 |
WO2011075377(A1) |
申请公布日期 |
2011.06.23 |
申请号 |
WO2010US59616 |
申请日期 |
2010.12.09 |
申请人 |
NOVARTIS AG;CHANG, FRANK;WINTERTON, LYNN, COOK |
发明人 |
CHANG, FRANK;WINTERTON, LYNN, COOK |
分类号 |
G02C7/04 |
主分类号 |
G02C7/04 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|