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JP2014159572A Acrylic copolymer and resin composition comprising the same 有权
标题翻译：丙烯酸共聚物和包含其的树脂组合物
公开(公告)号：JP2014159572A
公开(公告)日：2014-09-04
申请号：JP2014060469
申请日：2014-03-24
申请人： Lg Chem Ltd , エルジー・ケム・リミテッド
发明人： KIM SU-KYUNG , KANG BYUNG-IL , SUNG DA-EUN , HAN CHANG-HUN , LEE DAE-WOO , SEO JAE-BUM , CHOI EUN-JUNG , SUNG YU-TAEK
IPC分类号： C08F220/02 , G02B5/30 , G02F1/13363
CPC分类号： C08F120/10 , C08F120/56
摘要： PROBLEM TO BE SOLVED: To provide an optical film produced by using an acrylic copolymer having excellent heat resistance and optical characteristics suitable for producing a compensation film for an IPS mode, and to provide a liquid crystal display device.SOLUTION: The acrylic copolymer comprises 50 to 89 parts by weight of an alkyl (meth)acrylate monomer, 10 to 40 parts by weight of a styrene-based monomer including a cyclic pendant structure, and 1 to 30 parts by weight of a tert-butyl (meth)acrylate monomer and/or 0 to 10 parts by weight of a (meth)acrylamide monomer. A resin composition comprising the above copolymer is provided. The optical film uses the above copolymer. An IPS mode liquid crystal display device is provided, which includes the optical film as a compensation film. The acrylic copolymer has a glass transition temperature of 120 to 200°C. The optical film shows an in-plane retardation value of 80 to 150 nm, a retardation value of 100 to 200 nm in a thickness direction, and a ratio (retardation value in the thickness direction)/(in-plane retardation value) of 1.3 to 1.6.
摘要翻译：要解决的问题：提供通过使用具有优异的耐热性和光学特性的丙烯酸共聚物制造的光学膜，该光学膜适用于制造用于IPS模式的补偿膜，并提供液晶显示装置。解决方案：丙烯酸共聚物包含50 至89重量份的（甲基）丙烯酸烷基酯单体，10至40重量份的包含环状侧基结构的苯乙烯基单体和1至30重量份的（甲基）丙烯酸叔丁酯单体，以及 /或0〜10重量份的（甲基）丙烯酰胺单体。提供了包含上述共聚物的树脂组合物。光学膜使用上述共聚物。提供一种IPS模式液晶显示装置，其包括作为补偿膜的光学膜。丙烯酸共聚物的玻璃化转变温度为120〜200℃。光学膜的面内延迟值为80〜150nm，厚度方向的相位差值为100〜200nm，厚度方向的延迟值（面内延迟值）为1.3（面内延迟值）为1.3 到1.6。

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