发明名称 |
Incorporation of adsorbents during extraction and/or hydration of hydrogel materials used as ophthalmic devices |
摘要 |
Disclosed are methods for extracting leachable materials from a hydratable polymer by incorporation of an adsorbent into the solution employed to effect extraction. Suitable adsorbents are characterized as having a higher affinity for the leachable materials than either the hydratable polymer or the solvent employed in the solution. Also disclosed are sealed packages comprising an aqueous solution, an adsorbent and a hydratable polymer in the form of an ophthalmic device.
|
申请公布号 |
US5713460(A) |
申请公布日期 |
1998.02.03 |
申请号 |
US19960606889 |
申请日期 |
1996.02.26 |
申请人 |
PILKINGTON BARNES HIND, INC. |
发明人 |
EVANS, JOHN M.;MEYERS, WILLIAM E.;WEINSCHENK, JOSEPH |
分类号 |
A45C11/00;A61F2/16;B29C71/00;B29D11/00;B65D51/24;B65D81/26;C08J3/00;(IPC1-7):B65D81/26 |
主分类号 |
A45C11/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|