发明名称 |
PREPARATION OF ORGANIC PIECES OF OPTICAL QUALITY AND ESPECIALLY ORGANIC LENSES |
摘要 |
The main aim of the present invention is a method of preparing photochromic or non-photochromic organic pieces of optical quality and especially organic lenses, by radical polymerisation of a mixture of radically polymerisable monomers, characterised in that it comprises: a) adjusting, by pre-polymerisation, the viscosity of said mixture, to a value between 0.4 and 2 Pa.s; b) pouring said pre-polymerised mixture into a mould; c) photogelifying, in said mould, said pre-polymerised mixture until its gel point; d) completing the polymerisation of said pre-polymerised and gelified mixture in said mould, by heat treatment; adding effective amounts of at least one thermal catalyst and of at least one photoinitiator intervening in said mixture of monomers for the implementation of said pre-polymerisation, photogelification and polymerisation; said photoinitiator(s) intervening in an amount less than or equal to 0.009 parts by weight per 100 parts by weight of said mixture of monomers. |
申请公布号 |
WO0019246(A3) |
申请公布日期 |
2000.08.24 |
申请号 |
WO1999US21484 |
申请日期 |
1999.09.16 |
申请人 |
CORNING S.A.;HENRY, DAVID;VACHET, ANDRE |
发明人 |
HENRY, DAVID;VACHET, ANDRE |
分类号 |
G02B3/00;C08F2/00;C08F2/02;C08F2/46;C08F2/50;C08F212/32;C08F220/28;C08F220/30;C08F290/06;C09K9/02;G02B1/04 |
主分类号 |
G02B3/00 |
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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