发明名称 |
OPTICAL MATERIAL AND MOLDED PRODUCT THEREOF |
摘要 |
Disclosed is an optical material including a cyclic olefin copolymer containing at least a repeating structural unit [A] represented by the general formula (1) and a repeating structural unit [B] represented by the general formula (2) and having a molar ratio [A]/[B] of from 95/5 to 1/99, wherein the absolute value of the ratio &Dgr;OB/&Dgr;F is from 0.001 to 0.250 in which &Dgr;OB represents the amount of a change in the absolute value of the orientation birefringence calculated from the phase difference (nm) at a wavelength of 633 nm/film thickness (μm) in a stretched film obtained from the optical material, and &Dgr;F represents the amount of a change in the absolute value of the orientation coefficient determined from the dichroic ratio of parallel light intensity I∥ to perpendicular light intensity I⊥, each relative to the orientation direction according to Raman spectroscopy.
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申请公布号 |
US2013030136(A1) |
申请公布日期 |
2013.01.31 |
申请号 |
US201113639124 |
申请日期 |
2011.04.04 |
申请人 |
MITSUI CHEMICALS, INC.;SUNAGA TADAHIRO;ODA TAKASHI;IO HIROFUMI;KAWASHIMA KEISUKE;KOIKE YASUHIRO |
发明人 |
SUNAGA TADAHIRO;ODA TAKASHI;IO HIROFUMI;KAWASHIMA KEISUKE;KOIKE YASUHIRO |
分类号 |
C08F232/08 |
主分类号 |
C08F232/08 |
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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