| 摘要 |
PURPOSE:To produce the title molding excellent in opacity and antistatic properties by stretching compsn. comprising a crystalline PP resin, a specific cyclopentadiene petroleum resin, and a plurality of specific surfactants under specific conditions. CONSTITUTION:A compsn. comprising 100 pts.wt. crystaline PP resin, 3-50 pts.wt. cyclopentadiene petroleum resin having a softening point of 160 deg.C or higher. 0.1-1.0 pt.wt. nonionic surfactant obtd. by the esterification of a higher aliph. amine deriv. of formula I (wherein R is a 16-22C hydrocarbon group; and n and m are each 1-4) with a 16-22C higher fatty acid (e.g. stearic acid), and 0.1-1.0 pt.wt. betaine surfactant of formula II [wherein R1 is R; R2, R3, and R4 are each a lower alkylene; and X is -OH, -CONH2, or -COOH(salt)], provided that the wt. ratio between the two surfactants is 8/2-2/8 and the sum of the amts. of them is 0.2-2.0 pts.wt., is stretched at a temp. not higher than the softening point of the petroleum resin at least in one direction at least double. |
