セルロースアシレートフィルムの製造方法、積層セルロースアシレートフィルム、偏光板および液晶表示装置
    31.
    发明专利
    セルロースアシレートフィルムの製造方法、積層セルロースアシレートフィルム、偏光板および液晶表示装置 有权
    纤维素乙酸酯薄膜的生产方法,层压纤维素乙酸酯薄膜,偏光板和液晶显示装置

    公开(公告)号:JP2014231227A

    公开(公告)日:2014-12-11

    申请号:JP2014146462

    申请日:2014-07-17

    Inventor: YAMADA RUMIKO

    Abstract: 【課題】本発明の課題は、長尺製膜性に優れ、かつ耐久性、コントラスト性に優れる偏光板を与えるセルロースアシレートフィルムの製造方法を提供することにある。【解決手段】本発明のセルロースアシレートフィルムの製造方法は、アシル基置換度が2.7以下のセルロースアシレート層Aと、層Aの両側に層Aのアシル基置換度よりも大なセルロースアシレート層Bとからなる3層構成の積層体を有し、アシル基置換度が2.7以下のセルロースアセテート樹脂a溶液1を調製する工程(1)、アシル基置換度が2.8より大なセルロースアセテート樹脂bと、層Bのアシル基置換度が、2.7よりも大となるように、アシル基置換度が2.7以下のセルロースアセテート樹脂dの混合溶液2を調製する工程(2)、および該溶液1と該溶液2とを用いて共流延し、該層Bの乾燥膜厚を0.5〜15μmの範囲内とするフィルムを製造する工程(3)、を有することを特徴とする。【選択図】なし

    Abstract translation: 要解决的问题:提供一种具有优异的长膜生产率的纤维素酰化物膜的制备方法,并提供耐久性和对比度优异的偏振片。解决方案:纤维素酰化物膜的制备方法旨在制备具有 在层A的任一侧上由酰基取代度为2.7以下的纤维素酰化物层A和酰基取代度大于层A的酰基取代度的纤维素酰化物层B构成的三层结构体。 方法包括:制备乙酸纤维素树脂(a)酰基取代度为2.7以下的溶液1的工序(1) 制备酰基取代度大于2.8的乙酸纤维素树脂(b)和酰基取代度为2.7以下的乙酸纤维素(d)的混合溶液2的步骤(2),以便 得到层B中酰基取代度大于2.7的酰基取代度; 和共流体的步骤(3)将溶液1和溶液2包围,以制备膜B的干膜厚度在0.5至15μm的范围内的膜。

    Manufacturing method for phase difference film, phase difference film, polarizer, and liquid crystal display device
    33.
    发明专利
    Manufacturing method for phase difference film, phase difference film, polarizer, and liquid crystal display device 审中-公开
    相位差膜的制造方法,相位差膜,极化器和液晶显示装置

    公开(公告)号:JP2014085628A

    公开(公告)日:2014-05-12

    申请号:JP2012236820

    申请日:2012-10-26

    Inventor: TAKAGI TAKAHIRO

    Abstract: PROBLEM TO BE SOLVED: To provide a liquid crystal display device containing a phase difference film and improved in front surface contrast, in particular, with less hue change resulting from an angle of field.SOLUTION: A manufacturing method for a phase difference film comprises: a first step in which cellulose acetate with an average acetyl group substitution degree of 2.2 to 2.5 and a hydrogen-bonded chemical compound having at least a carboxy group or hydroxy group as at least a substituent group in an aromatic ring are dissolved in an organic solvent containing 90% by mass of halogen organic solvent, thereby obtaining a dope solution; a second step in which the dope solution is caused to flow and extend over a metal belt; a third step in which a film object obtained by drying the dope solution caused to flow and extend is pulled off from the metal belt; a fourth step in which the film object pulled off is stretched; and a fifth step in which the stretched film object is heated and dried to volatilize the organic solvent in the film object. The average volatilization speed of the organic solvent of the film object right before the stretching of the film object is adjusted to the range of 1.5×10to 3.0×10g/(sec cm).

    Abstract translation: 要解决的问题:提供一种含有相位差膜并改善前表面对比度的液晶显示装置,特别是具有由场角产生的较少色调变化。解相:一种相位差膜的制造方法包括: 将平均乙酰基取代度为2.2〜2.5的乙酸纤维素和至少具​​有至少具有芳环的羧基或羟基的氢键化学化合物作为至少取代基的第一步溶解在有机溶剂中 含有90质量%的卤素有机溶剂,得到涂料溶液; 第二步骤,其中使涂料溶液在金属带上流动和延伸; 第三步骤,从金属带中拉出通过干燥引导溶液而流动和延伸的薄膜物体; 撕下电影对象的第四步骤; 以及第五步骤,其中将被拉伸的薄膜物体加热并干燥以使薄膜物体中的有机溶剂挥发。 将薄膜物体拉伸之前的薄膜物体的有机溶剂的平均挥发速度调节至1.5×10 -3.0×10 8 /(sec cm)的范围。

    Optical film and polarizing plate using the same
    36.
    发明专利
    Optical film and polarizing plate using the same 审中-公开
    光学膜和使用它的极化板

    公开(公告)号:JP2013232005A

    公开(公告)日:2013-11-14

    申请号:JP2013150855

    申请日:2013-07-19

    Abstract: PROBLEM TO BE SOLVED: To provide an optical film, thin but excellent in moisture permeability, improving moist heat resistance of a polarizing element when used for polarizing plate protection films, and, at the same time, excellent in mass change of the film after moist heat conditions and further excellent in front face contrast by suppressing disturbance of molecular orientation of an additive and cellulose even when extended to high magnification, and to provide a polarizing plate using the same.SOLUTION: There is provided an optical film in which a tanδ in film width direction has the following relation: 0.50≥tanδ/tanδ≥0.22, where the tanδmeans the maximum value of a tanδ value measured at 25-210°C, and the tanδmeans the value of tanδ measured at the temperature of -40°C when the tanδis expressed.

    Abstract translation: 要解决的问题:为了提供一种薄但透湿性优异的光学膜,当偏振片保护膜使用时,提高偏振元件的耐湿热性,并且同时具有优异的湿润后的膜的质量变化 通过抑制添加剂和纤维素的分子取向的干扰,即使延伸到高倍率,并且提供使用其的偏振片,也可以提供前面的对比度。另外,提供了一种光学膜,其中tanδ在 膜宽度方向具有以下关系:0.50≥tanδ/tanδ≥0.22,其中tanδ表示在25-210℃下测量的tanδ值的最大值,tanδ表示在-40℃的温度下测得的tanδ值 当tanδ表达时。

    Cellulose acylate film, polarizing plate protective film, polarizing plate and liquid crystal display device
    38.
    发明专利
    Cellulose acylate film, polarizing plate protective film, polarizing plate and liquid crystal display device 审中-公开
    纤维素丙烯酸酯膜,偏光板保护膜,偏光板和液晶显示装置

    公开(公告)号:JP2013112685A

    公开(公告)日:2013-06-10

    申请号:JP2011256769

    申请日:2011-11-24

    Abstract: PROBLEM TO BE SOLVED: To provide a cellulose acylate film, which is laminated with an active energy ray curable layer and in which adhesiveness with the active energy ray curable layer is sufficiently maintained even when being irradiated with light for a long period of time.SOLUTION: The cellulose acylate film includes: cellulose acylate; 0.001 mass% or more and 5 mass% or less of a hindered amine compound with respect to the cellulose acylate; and a benzotriazole UV absorbent having a molecular weight of 400 or more and a melting point of 30°C or more without containing a halogen atom.

    Abstract translation: 待解决的问题:提供一种层叠有活性能量射线固化层的纤维素酰化物膜,其中与活性能量射线固化层的粘合性即使在长时间照射光时也能充分保持 时间。 解决方案:酰化纤维素膜包括:酰化纤维素; 相对于纤维素酰化物为0.001质量%以上且5质量%以下的受阻胺化合物; 以及分子量为400以上且熔点为30℃以上且不含卤素原子的苯并三唑类UV吸收剂。 版权所有(C)2013,JPO&INPIT

    Cellulose acylate film
    40.
    发明专利
    Cellulose acylate film 审中-公开
    纤维素醋酸盐膜

    公开(公告)号:JP2013100502A

    公开(公告)日:2013-05-23

    申请号:JP2012244219

    申请日:2012-11-06

    Abstract: PROBLEM TO BE SOLVED: To provide a cellulose acylate film of which a light scattering efficiency (haze) is 0.3% or less when the film is stretched by 10 to 30% and is slightly increased by ±0.001 to 0.2% as compared with the haze before stretching.SOLUTION: The present invention relates to a cellulose acylate film containing an additive that is a liquid state at room temperature, has a melting point of -50 to 50°C, a boiling point of 300°C or higher, and its own refractive index of 1.4 to 1.6. The cellulose acylate film has a low haze.

    Abstract translation: 要解决的问题:为了提供当薄膜拉伸10-30%时光散射效率(雾度)为0.3%或更小的纤维素酰化物膜,并且稍微增加±0.001至0.2%,相比之下 在拉伸之前有雾霾。 解决方案:本发明涉及含有在室温下为液态的添加剂的纤维素酰化物膜,其熔点为-50〜50℃,沸点为300℃以上, 自身的折射率为1.4〜1.6。 纤维素酰化物膜具有低雾度。 版权所有(C)2013,JPO&INPIT

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