发明名称 |
POLYMER FOR CONTACT LENSES |
摘要 |
The present invention relates to a polyurethane polymer composition prepared by reacting a mixture comprising: a} at least one polyethylene glycol, and either b) at least one poly-isocyanate, having a functionality greater than 2 or c) at least one di-isocyanate and at least one polyol or at least one macropolyol having a functionality greater than 2, wherein the polyol or macropolyol is present at an amount of 0.1 to 9 wt % of the mixture. The invention also relates to a process for preparing a polyurethane xerogel in the form of a moulded article, said process comprising the steps of: i.) preparing said mixture; ii. ) dispensing the reaction mixture formed in step i) into a mould; iii. ) allowing the reaction mixture to react and cure; iv. ) removing the moulded article from the mould; and v. ) hydrating the moulded article. |
申请公布号 |
WO2012056195(A2) |
申请公布日期 |
2012.05.03 |
申请号 |
WO2011GB01527 |
申请日期 |
2011.10.24 |
申请人 |
OCUTEC LIMITED;ABDUL, RASHID;BONNETTE, GRAHAM, NEIL |
发明人 |
ABDUL, RASHID;BONNETTE, GRAHAM, NEIL |
分类号 |
C08G18/48 |
主分类号 |
C08G18/48 |
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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