发明名称 |
Bloco de lente oftálmica composição bloco base pré-moldado processo para reter um molde de lente oftálmica fita conformável para unir um bloco de lente com um molde de lente oftálmica e kit de blocagem de lente oftálmica |
摘要 |
The present invention provides thermoplastic ophthalmic lens blocking compositions that have many advantages over traditional metal alloy materials. Preferred compositions comprise a homopolymer or copolymer of epsilon-caprolactone, have a number average molecular weight between 3,000 and 100,000, and a polydispersity less than 10. The composition may also comprise one or more modifiers, fillers or heat absorbing materials. In one embodiment, the composition is used to fill the cavity between a preformed lens block and a lens. In another embodiment the composition is used to form a lens block. Methods of holding a lens blank are taught. Tapes that provide a receptive surface against which the composition may be adhered are disclosed. |
申请公布号 |
BR9610536(A) |
申请公布日期 |
1999.07.06 |
申请号 |
BR19969610536 |
申请日期 |
1996.09.13 |
申请人 |
MINNESOTA MINING AND MANUFACTURING COMPANY. |
发明人 |
RICHARD L. SEVERANCE;SHARON R. BENJAMIN;H. KO;TODD R. WILLIAMS;WILLIAM L. PARISH, JR.;CAROLE SEDLOCK;PHILIP G. MARTIN;JOEL D. OXMAN;F. ANDREW UBEL;MICHAEL GOVEK;PATRICK D. HYDE |
分类号 |
B24B13/005;C08J5/18;C08L33/04;C08L67/04;C08L71/02;C08L101/00;C09J7/02;C09J167/04;(IPC1-7):B24B13/005 |
主分类号 |
B24B13/005 |
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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