发明名称 |
Improved tinted contact lens and method of making the same. |
摘要 |
An improvement in a process for preparing a contact lens tinted over at least a portion of its surface, having the steps of forming a tinting solution having a reactive dyestuff and applying the tinting solution to a polymeric hydrogel contact lens material, wherein the improvement comprises adding an effective amount of an ammonium quaternary salt to the tinting solution before the applying step.
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申请公布号 |
EP0388357(A1) |
申请公布日期 |
1990.09.19 |
申请号 |
EP19900810175 |
申请日期 |
1990.03.07 |
申请人 |
CIBA-GEIGY AG |
发明人 |
HUNG, WILLIAM M.;SU, KAI C. |
分类号 |
G02C7/04;D06P1/00;D06P1/66;D06P3/00;G02C7/02;G02C13/00 |
主分类号 |
G02C7/04 |
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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