| 摘要 |
PURPOSE: To obtain an agricultural vinyl chloride resin film excellent in weathering resistance and capable of being set up for a long time by forming a composition containing a specified vinyl chloride resin, a triaryl phosphate and an organophosphorus compound into film. CONSTITUTION: 5-100 pts.wt. ethylene/vinyl chloride copolymer resin of an ethylene content of 0.1-7.0wt.% is mixed with 95-0 pt.wt. another vinyl chloride resin to obtain a mixture (A) of a total ethylene content of 0.1-7.0wt.%. A composition comprising 100 pts.wt. mixture A, 0.05-5 pts.wt. triaryl phosphate, and 0.05-2.5 pts.wt. organophosphorus compound of formula I (wherein R1 to R4 are each (substituted) aryl) or formula II [wherein R3 is R1 ; R2 , R4 and R5 are each (cyclo)alkyl, (alkyl-substituted) aryl, aryl-substituted alkyl, (aryl- substituted) alkenyl, or epoxy; Y is a residue of polyhydric alcohol of formula III; R' is 5C or lower alkylene or alkenylene; and m is 0-10] is molded into film. |
