| 摘要 |
PURPOSE:To obtain the title sheet improved in diffused light, reflectivity, luminance and fluorescence by mixing a fluorescent pigment with a specified vinyl chloride copolymer and molding the obtained mixture. CONSTITUTION:Vinyl chloride is copolymerized with a polyfunctional comonomer to obtain a vinyl chloride copolymer having a tetrahydrofuran- insoluble gel content of 5-50wt.%, desirably 10-40wt.% and an average degree of polymerization of tetrahydrofuran-soluble matter of 400-1300,desirably 600-1000. 100 pts.wt. said copolymer mixed with 0.3-3 pts.wt. fluorescent pigment which is a fluorescent dye/synthetic resin solid solution and formulated for vinyl chloride resin and optionally a stabilizer, a stabilizer aid, a plasticizer, a lubricant, a reinforcement, a processing aid, etc., and the obtained mixture is molded to obtain the title sheet. |
