摘要:
A polymer film stretched after formed by solution casting, of which the wavelength dispersion of the refractivity anisotropy and/or the refractivity anisotropy differ between two surfaces of the film is disclosed.
摘要:
A cellulous acylate film in which X-ray diffractive intensity satisfies the following Formulae (I) to (V) and in which a half-value width of the peak at 2θ2 is 2.8° or less as observed in the sectional view in a direction parallel to the transport direction of the film: 0.00≦Ici/Ico
摘要:
A method for producing a transparent polymer film, comprising heat-treating a polymer film containing a polymer and a plasticizer having a number-average molecular weight of from 500 to 10000 and having a repetitive unit, at a temperature T (unit, ° C.) satisfying the following formula (1): Tc≦T
摘要翻译:一种透明聚合物膜的制造方法,其特征在于,在温度T(单位:℃)下,对含有聚合物的聚合物膜和数均分子量为500〜10000的增塑剂进行热处理,并具有重复单元。 )满足以下公式(1):<?in-line-formula description =“In-line Formulas”end =“lead”?> Tc <= T
摘要:
A method for producing a cellulose acylate film comprising preliminarily drawing a cellulose acylate film at a temperature in the range of (Tg−20)° C. to (Tg+50)° C.; and heating the film at a temperature not less than (−285×S+1000)° C. and less than a melting point of the film for 0.01 minutes to less than 60 minutes wherein Tg represents a glass transition temperature of the film and S represents a total substitution degree of cellulose acylate.
摘要:
The present invention is to provide such a liquid crystal composition that satisfies plural characteristic features selected from a wide temperature range of a nematic phase, a low viscosity, an appropriate optical anisotropy, a large negative dielectric anisotropy and a large specific resistance.The liquid crystal composition of the invention contains, as a first component, at least one compound selected from the group consisting of compounds represented by Formula (1-1) to (1-4); contains, as a second component, at least one compound selected from the group consisting of compounds represented by Formula (2-1) to (2-3); and has a negative dielectric anisotropy. In the following formulae, all the symbols are defined in claim 1
摘要:
A compound represented by formula (1) or (2) and a polymer obtained by polymerizing the compound are provided: wherein Ra is one of the groups represented by Formulas (3-1) to (3-5); Rb is hydrogen, halogen, or a side chain such as —CN, —NCO, —NCS or alkyl having a carbon number of 1 to 20; A is a cyclic diyl group such as 1,4-cyclohexylene, 1,4-cyclohexenylene, 1,4-phenylene, naphthalene-2,6-diyl, tetrahydronaphthalene-2,6-diyl, fluorene-2,7-diyl, bicyclo[2.2.2]oct-1,4-diyl or bicyclo[3.1.0]hex-3,6-diyl, wherein at least one A is substituted 1,4-phenylene represented by Formula (4-1) or (4-2); Z is a single bond or a bonding group such as alkylene having a carbon number of 1 to 20; Rc is hydrogen, halogen, —CF3 or alkyl having a carbon number of 1 to 5; m is an integer of 1 to 6, and q is 0 or 1.
摘要翻译:提供由式(1)或(2)表示的化合物和通过使化合物聚合而获得的聚合物:其中R a是由式(3-1)至(3- 5); R b是氢,卤素或侧链如-CN,-NCO,-NCS或碳数为1至20的烷基; A是环状二基,例如1,4-亚环己基,1,4-亚环己烯基,1,4-亚苯基,萘-2,6-二基,四氢萘-2,6-二基,芴-2,7-二基, 双环[2.2.2]辛-1,4-二基或双环[3.1.0]六-3,6-二基,其中至少一个A是由式(4-1)表示的取代的1,4-亚苯基或( 4-2); Z是单键或键合基团,例如碳数为1至20的亚烷基; R c是氢,卤素,-CF 3或碳数为1至5的烷基; m为1〜6的整数,q为0或1。
摘要:
A compound represented by the following formula (1), a liquid crystal composition containing the compound and a liquid crystal display device containing the composition: all the symbols in the formula (1) are defined in the specification.
摘要:
A polymer is swollen in a first tank. The swelling temperature is in the range of −10 to 50° C. The mixture is cooled in a first cooling vessel to the range of −100 to −10° C., and thereafter heated in a heating device to the range of 0 to 57° C. The polymer is cellulose acylate in which a degree of substitution of the acyl group for hydroxyl group is at least 2.87. A film obtained from the cellulose acylate has a negative value of ΔRe and a positive value of ΔRth, and |ΔRth| is at least 10 nm. ΔRe and ΔRth are respective difference of Re and Rth at the measurement thereof with use of wavelengths between 700 nm and 400 nm. The film is used adequately as a birefringence film, a protective film for a polarizing filter in a liquid crystal display.
摘要:
The invention is to provide liquid crystalline compounds having a negative and extremely large dielectric anisotropy value and a small optical anisotropy value at the same time; liquid crystal compositions comprising the compound; and liquid crystal display devices fabricated by using the liquid crystal composition; the liquid crystalline compounds have 2,3-dihalogenophenylene moiety and are expressed by formula (1) wherein Ra and Rb each independently represents a linear or branched alkyl having 1 to 10 carbon, any methylene in the alkyl may be replaced by —O—, —S—, —CH═CH—, or —C≡C—, but —O— is not successive, and any hydrogen in the alkyl may be replaced by halogen; rings A1 to A4 each independently represents trans-1,4-cyclohexylene, cyclohexene-1,4-diyl, pyridine-1,4-diyl, pyrimidine-2,5-diyl, or 1,4-phenylene, wherein at least one hydrogen in these rings may be replaced by halogen, and any nonadjacent methylene in cyclohexane ring may be replaced by —O—; Y1 and Y2 each independently represents F or Cl; Z1, Z2 and Z3 each independently represents a single bond, —CH2CH2—, —(CH2)4—, —COO—, —OCO—, —CH2O—, —OCH2—, —CF2O—, or —OCF2—; and l, m and n each independently is 0, 1 or 2, and the sum of l+m+n is 3 and less.
摘要:
There is provided an optical film having a small size change with a temperature change of a support of a pattern retardation film. An optical film includes: a support comprising a polymer having a moisture absorptivity of 0.5% or more; a first retardation region and a second retardation region, in which birefringence thereof is mutually different; and an optically anisotropic layer in which the first retardation region and the second retardation region are alternately patterned for every one line.