发明名称 |
Compound, polymerizable liquid crystal composition, optical element and optical information writing/reading device |
摘要 |
A compound having a good durability against light and capable of producing desired liquid crystallinity after polymerization, and a polymerizable liquid crystal composition containing such a compound, are provided. Further, an optical element having a good durability against light, and an optical information writing/reading device employing such an element, are provided. A compound represented by CH2═CR1—COO—R2-Cy-Ph-R3—OCO—CR4═CH2. R1 and R4 are each preferably a hydrogen atom. R3 is preferably a C1-6 alkylene group wherein an oxygen atom is present or not present at an end of the group to be bonded to a cyclic group, and wherein some or all of hydrogen atoms bonded to carbon atoms in the group may be substituted by fluorine atoms; or an alkylene group wherein an oxygen atom is present at an end of the group to be bonded to a cyclic group. A diffraction grating 2 produced by employing this liquid crystal compound has a good durability against light, and accordingly, it is possible to constitute an optical information writing/reading device suitable for large capacity recording by employing a blue laser as a light source 1.
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申请公布号 |
US8039064(B2) |
申请公布日期 |
2011.10.18 |
申请号 |
US20100952430 |
申请日期 |
2010.11.23 |
申请人 |
ASAHI GLASS COMPANY, LIMITED |
发明人 |
TAKESHITA NOBUHIKO;KONISHI TEPPEI;KUMAI HIROSHI |
分类号 |
C09K19/30;C07C67/08;C07C69/76;C09K19/20;C09K19/38;G02B5/18;G11B7/135 |
主分类号 |
C09K19/30 |
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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