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A method for producing a multi-layer film, a method for producing an optically anisotropic laminate, and a method for producing a circularly polarizing plate.
A method for producing a multi-layer film, a method for producing an optically anisotropic laminate, and a method for producing a circularly polarizing plate.
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机译:一种制造多层膜的方法,一种制造光学各向异性层压材料的方法,以及制造圆偏振板的方法。
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摘要
PROBLEM TO BE SOLVED: To provide a manufacturing method capable of manufacturing a multilayer film including a cured liquid crystal layer having few orientation defects. SOLUTION: The resin layer of a first base material containing a resin layer made of a thermoplastic resin having a glass transition temperature of Tg (° C.) contains a polymerizable liquid crystal compound and is cured by irradiation with active energy rays. In the step (1) of applying a liquid crystal composition to form a coating layer to obtain a first laminated body containing the first base material and the coating layer, the first laminated body is (Tg-). 20) A step of stretching under the condition of ° C. or higher (Tg + 20) ° C. to obtain a second laminate containing the first stretched base material and the oriented liquid crystal layer in which the polymerizable liquid crystal compound is oriented (2). , And the oriented liquid crystal layer of the second laminated body is irradiated with the active energy rays, the oriented liquid crystal layer is cured to form a cured liquid crystal layer, and the first stretched base material and the cured liquid crystal layer are formed. A method for producing a multilayer film, which comprises the step (3) of obtaining a multilayer film containing the same. [Selection diagram] None
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