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METHOD FOR PRODUCING A POLARIZING FILM USING A POLY(VINYL ALCOHOL) RESIN IODINATED IN A SOLUTION STATE BEFORE CASTING
METHOD FOR PRODUCING A POLARIZING FILM USING A POLY(VINYL ALCOHOL) RESIN IODINATED IN A SOLUTION STATE BEFORE CASTING
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机译:铸造前使用溶液状态下碘化的聚乙烯醇树脂制备偏振膜的方法
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摘要
PURPOSE: A method for producing a polarizing film is provided to prepare a polarizing film with excellent polarity and durability by adding iodine and boric acid to a polyvinyl alcohol aqueous solution, and to increase productivity of a polarizing film.;CONSTITUTION: A method for producing a polarizing film using a poly(vinyl alcohol) resin iodinated in a solution state comprises the steps of: (100) diluting polyvinyl alcohol in water to obtain a polyvinyl alcohol aqueous solution; (200) adding iodine and potassium iodide and boric acid while keeping the polyvinyl alcohol aqueous solution at a constant temperature and then dissolving the materials in the aqueous solution; (300) molding the polyvinyl alcohol aqueous solution in which additive is dissolved in a film form; (400) drawing the molded polyvinyl alcohol film using a solvent; and (500) drying the drawn film.;COPYRIGHT KIPO 2010
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