| 摘要 |
PURPOSE:A polypropylene film having improved transparency, product appearance, and display effect, comprising polypropylene resin, dibenzylidene sorbitol, and an alkylene-bis-amide. CONSTITUTION:100 part by wt.of polypropylene resin is incroporated with (A) 0.1-0.6 part by wt., preferably 0,15-0.5 part by wt. of 1,3,2,4-dibenzylidene-D- sorbitol and (B) 0.1-0.6 part by wt., preferably 0.15-0.5 part by wt. of an alkylene-bis-amide, e.g., ethylenei-bis- stearamide, etc. of formula (R1 is 1-20C alkylene group; R2 and R3 are 2-30C alkyl, allyl, or aryl groups) and extruded into an undrawn film, which may be drawn. The tatal amount of (A) and (B) is 0.3-1.0 part by wt., preferably 0.4- 0.6 part by wt., and the weight ratio of (A) to (B) is preferably 60-75 : 40-25. |
