发明名称 |
Method for making contact lenses |
摘要 |
The instant invention pertains to a method and a fluid composition for producing contact lenses with improved lens quality and with increased product yield. The method of the invention involves adding a non-crosslinkable hydrophilic polymer into a fluid composition including a lens-forming material in an amount sufficient to reduce an averaged mold separation force by at least about 40% in comparison with that without the non-crosslinkable hydrophilic polymer and to provide a disparity of about 10 N or less in mold separation force. The non-crosslinkable hydrophilic polymer has a limited miscibility with the lens-forming material low enough to successfully and timely form an intact interfacial film with a sufficient thickness at an interface between the mold and the fluid composition therein, and has a structure that minimizes entanglement of the non-crosslinkable hydrophilic polymer in the interfacial film with the polymer matrix of the formed lens.
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申请公布号 |
US2007037897(A1) |
申请公布日期 |
2007.02.15 |
申请号 |
US20060500721 |
申请日期 |
2006.08.08 |
申请人 |
WANG GUIGUI;SMITH DAWN A;VOGT JUERGEN;LALLY JOHN M;DEVLIN BRIAN G |
发明人 |
WANG GUIGUI;SMITH DAWN A.;VOGT JUERGEN;LALLY JOHN M.;DEVLIN BRIAN G. |
分类号 |
B29D11/00;G02B1/04 |
主分类号 |
B29D11/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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