发明名称 |
Producing soft contact lenses |
摘要 |
A soft contact lens is provided by: pouring an excess amount of an original solution for producing a soft contact lens into a concave mold; placing a convex mold on said concave mold and overflowing the excess of said original solution to thereby uniformly fill said original solution in a space between said concave mold and said convex mold; gelling said original solution between the two molds to form therebetween a lens having a tensile strength of at least about 0.1 kgf/cm2; immersing said lens and said two molds in a liquid to peel said lens from said molds; and extracting the thus-peeled lens via an extraction treatment with water. The "original solution" contains: a component A selected from the group consisting of monomers and hydrophillic polymers wherein the monomers yield hydrophillic component when polymerized; a compound B selected from the group consisting of monomers and hydrophobic polymers wherein the monomers yield hydrophobic component when polymerized; and a solvent C the weight ratio of A:B being from about 85:15 to about 55:45 and solvent C being about 5 to 95% by weight.
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申请公布号 |
US4347198(A) |
申请公布日期 |
1982.08.31 |
申请号 |
US19800190820 |
申请日期 |
1980.09.25 |
申请人 |
TORAY INDUSTRIES, LTD. |
发明人 |
OHKADA, SHINZO;KENJO, HIDEKI |
分类号 |
B29D11/00;G02B1/04;(IPC1-7):B29D11/00 |
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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