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.
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 代理人
主权项
地址