发明名称 |
Cross-linked silicone polymers, fast curing silicone precursor compositions, and injectable intraocular lenses |
摘要 |
Polymeric materials which are optically clear and resistant to discoloration are disclosed. In one embodiment, such compositions comprise optically clear, cross-linked polymers derived from a mixture comprising (A) a vinyl-containing polyorganosiloxane component, and (B) an organosilicon component including silicon-bonded hydride groups which react with vinyl groups included in (A) during the polymerization and (C) an effective platinum group metal-containing catalyst component, provided that the mole ratio of vinyl groups to silicon-bonded hydride groups in the mixture is greater than 1.2, preferably greater than about 4 or about 5, and is such that the polymer has a reduced discoloration susceptibility relative to a substantially identical polymer having a mole ratio of vinyl groups to silicon-bonded hydride groups in the precursor mixture equal to 1.2.
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申请公布号 |
US5278258(A) |
申请公布日期 |
1994.01.11 |
申请号 |
US19920885136 |
申请日期 |
1992.05.18 |
申请人 |
ALLERGAN, INC. |
发明人 |
GERACE, JOHN D.;CHRIST, F. RICHARD |
分类号 |
C08L83/04;G02B1/04;(IPC1-7):C08G77/20;C08F283/12 |
主分类号 |
C08L83/04 |
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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