发明名称 |
Impact resistant Fresnel lens |
摘要 |
The present invention provides an impact resistant Fresnel lens comprising a resin which is obtained by polymerizing a solution consisting essentially of (a) 100 parts by weight of a monomer mixture comprising an styrenic monomer in an amount of from 60 to 99 parts by weight and a (meth)acrylic monomer of from 1 to 40 parts by weight, and (b) 1 to 50 parts by weight of a styrene-dienic copolymer based on 100 parts by weight of said monomer mixture based on 100 parts by weight of said monomer mixture. The Fresnel lens has a high refractive index and excellent transparency and impact resistance.
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申请公布号 |
US5476906(A) |
申请公布日期 |
1995.12.19 |
申请号 |
US19940277010 |
申请日期 |
1994.07.19 |
申请人 |
SUMITOMO CHEMICAL COMPANY, LIMITED;DAI NIPPON PRINTING COMPANY, LIMITED |
发明人 |
YOKOO, KAZUHIRO;HONDA, SATOSHI;MATSUURA, HIDEAKI |
分类号 |
C08L25/10;C08F257/02;C08L7/00;C08L33/04;C08L33/10;G02B1/04;G02B3/08;(IPC1-7):C08L33/08;C08L25/14 |
主分类号 |
C08L25/10 |
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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