发明名称 |
POLYMERIZABLE PHOTOCHROMIC COMPOSITIONS WITH MULTIPLE INITIATORS |
摘要 |
Provided is a method of preparing a photochromic polymeric article including: (a) providing a fluid polymerizable composition of: at least one monomer; a first initiator for inducing polymerization of the monomer at a first temperature; and a second initiator for inducing further polymerization at a second temperature higher than the first temperature; (b) heating the polymerizable composition to at least the first temperature whereby the first initiator induces polymerization of the monomer at the first temperature to produce a polymerizate; (c) heating the polymerizate of (b) to at least the second temperature to further polymerize the polymerizate; and (d) contacting the polymerizate with an organic photochromic substance to incorporate the organic photochromic substance into the polymerizate. Photochromic articles prepared by the method are also provided.
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申请公布号 |
US2007257238(A1) |
申请公布日期 |
2007.11.08 |
申请号 |
US20070696895 |
申请日期 |
2007.04.05 |
申请人 |
TRANSITIONS OPTICAL, INC. |
发明人 |
MISURA MICHAEL S.;STEWART KEVIN J. |
分类号 |
G02B1/04 |
主分类号 |
G02B1/04 |
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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