发明名称 |
INTERPENETRATING POLYMER NETWORK HYDROPHILIC HYDROGELS FOR CONTACT LENS |
摘要 |
An interpenetrating polymer network (IPN) composition and a process for the manufacture of hydrogel contact lens using the invention material. The polymeric materials are formed by polymerization of: (1) an unsaturated alkyl(meth)acrylate or its derivatives such as 2-hydroxyethyl methacrylate as the principle monomer; (2) optionally vinyl containing comonomer(s) to enhance the resulting hydrogel water absorbing capability; (3) polymerizable multi-functional crosslinking agent(s); (4) an irradiation initiator and/or thermal initiator; (5) optionally other additives to impart the resulting hydrogel specific properties such as ultra-violet blocking ability and handling colors; in the presence of a soluble, hydrophilic IPN agent such as polyvinylpyrrolidone (PVP) or poly-2-ethyl-2-oxazoline (PEOX) with a specific molecular weight range. The novel hydrophilic hydrogel material in the present invention can be used to produce a spherical contact lens, a toric contact lens, a multifocal contact lens, a toric-multifocal contact lens, and other medical devices. The inventive hydrogel material shows a low degree of surface friction, a low dehydration rate, and a high degree of biodeposit resistance.
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申请公布号 |
WO0002937(A1) |
申请公布日期 |
2000.01.20 |
申请号 |
WO1999US15532 |
申请日期 |
1999.07.08 |
申请人 |
SUNSOFT CORPORATION;HU, HOPIN;BRIGGS, CHARLES, R.;NGUYEN, TUNG;TRAN, HUE;ROSSBERG, EILENE |
发明人 |
HU, HOPIN;BRIGGS, CHARLES, R.;NGUYEN, TUNG;TRAN, HUE;ROSSBERG, EILENE |
分类号 |
C08F265/04;C08F271/02;C08F283/00;C08F283/12;C08F291/18;G02B1/04;(IPC1-7):C08F273/00;C08F271/00;G02C7/04 |
主分类号 |
C08F265/04 |
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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