| 摘要 |
PURPOSE:To obtain a thin and lightweight polarizing material by using a polyamide-based resin in combination with a PVA resin, coating a specific photosetting resin on the resultant polarizing material and curing the coating. CONSTITUTION:A polymn. initiator as well as the photosetting resin compsn. consisting of a polyene compd. having at least one kind of the group selected from a group consisting of an amide bond group, imide bond group, etc., and/or multifunctional maleic acid deriv. and/or polythiol compd. in addition to a multifunctional (meth)acrylate having at least one kind of the group selected from the group consisting of an amide bond group, imide bond group, etc., are coasted on the polarizing material and the coating is photoset. For example, 4.0kg PVA and 6.0kg 6-nylon as the polyamide resin are kneaded and extruded at 235 deg.C resin temp. by a 30mmphi twin-screw extruder. The extruded resins are cooled to form pellets. Such resin compsn. is formed to a film having 20mum thickness by a T-die molding machine. The film contg. the polarizing element obtd. by immersing the above-mentioned film for 2sec in an water/methanol (50/50v/v) soln. contg. of 2wt% iodine, 10wt% potassium iodide is stretched 2.5 times at a room temp.
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