发明名称 |
Cross-linked hydrogel copolymers for contact lenses |
摘要 |
The invention relates to soft contact lenses having a water content of at least about 45% and comprising a hydrated copolymer of a major proportion of an hydroxyalkyl acrylate or methacrylate, up to 12% by weight of an ethylenically unsaturated acid or anhydride, a minor proportion of a cross-linking monomer and a minor proportion of styrene or a substituted styrene, the free acid or anhydride groups being in salt form.
|
申请公布号 |
US4361657(A) |
申请公布日期 |
1982.11.30 |
申请号 |
US19790098479 |
申请日期 |
1979.11.29 |
申请人 |
GLOBAL VISION (U.K.) LTD. |
发明人 |
ATKINSON, IVOR B.;HOLDSTOCK, BARRY C. |
分类号 |
G02C7/04;(IPC1-7):G02C7/04 |
主分类号 |
G02C7/04 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|