发明名称 |
Photochromic compositions of improved fatigue resistance |
摘要 |
<p>Photochromic optical articles of improved resistance to light fatigue are provided by the use of a combination of hindered amine light stabilizer and asymmetric diaryloxalamide light stabilizer with a mixture of (1) photochromic material having a minima luminous transmission in the range of 560 to 630 nanometers and (2) photochromic material having a minima luminous transmission in the range of 430 to 520 nanometers.</p> |
申请公布号 |
SG47753(A1) |
申请公布日期 |
1998.04.17 |
申请号 |
SG19960004216 |
申请日期 |
1993.08.27 |
申请人 |
PPG INDUSTRIES, INC. |
发明人 |
LIGAS, JOHN, S.;MISURA, MICHAEL, S., JR.;WELCH, CLETUS, N. |
分类号 |
G02B5/00;C08K5/00;C08K5/46;C09K9/02;G02B1/00;G02B5/23;G03C1/73;(IPC1-7):G02B5/23 |
主分类号 |
G02B5/00 |
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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