Porous stretched article of polypropylene-based resin and process for its preparation
申请人:NEW JAPAN CHEMICAL CO.,LTD.
公开号:EP0632095A2
公开(公告)日:1995-01-04
Disclosed are a process for producing a porous stretched article of β-crystalline polypropylene-based resin, the process comprising the steps of crystallizing a melt of a polypropylene-based resin composition at a temperature of 15 to 140°C to form a solidified product containing β-form crystals and stretching the resulting solidified product at a temprature which is higher than 20 °C but lower than the melting point of the β-form crystals in said solidified product, the polypropylene-based resin composition comprising a polypropylene-based resin and 0.0001 to 5 parts by weight, per 100 parts by weight of the polypropylene-based resin, of at least one specific amide compound; and a porous stretched article produced by the process.
本发明公开了一种用β-结晶聚丙烯基树脂生产多孔拉伸制品的工艺,该工艺包括以下步骤:在15至140℃的温度下使聚丙烯基树脂组合物的熔体结晶,形成含有β-结晶的固化物,并在高于20℃但低于所述固化物中β-结晶的熔点的温度下拉伸所得固化物,所述聚丙烯基树脂组合物包括聚丙烯基树脂和0.0001至5份(按每100份聚丙烯基树脂的重量计)的至少一种特定酰胺化合物;以及由该工艺生产的多孔拉伸制品。