公开(公告)号：EP1156076A1

公开(公告)日：2001-11-21

申请号：EP00981800.6

申请日：2000-12-18

申请人： Mitsui Chemicals, Inc.

发明人： Yano, Shigeru Mitsui Chemicals, Inc. ,  Wang, Mindiaw Mitsui Chemicals, Inc. ,  Ichikawa, Taroh Mitsui Chemicals, Inc.

IPC分类号： C08J9/00

CPC分类号： C08J5/18 ,  C08J2323/08 ,  C08L23/06 ,  C08L23/0815 ,  Y10S521/908 ,  Y10T428/249979 ,  Y10T428/249986 ,  C08L2666/04

摘要： A porous film having excellent moisture permeability, flexibility and exudation resistance, as well as a manufacturing method capable of forming and stretching at high speed a porous film having the characteristics described above, the porous film being molded from a composition containing 25 to 55% by weight of polyolefinic resin and 75 to 45% by weight of an inorganic filler in which the polyolefinic resin contains 98 to 70% by weight of linear low density polyethylene and 2 to 30% by weight of branched low density polyethylene, and 0.5 to 5 parts by weight of liquid ethylene-α-olefin oligomer based on 100 parts by weight of the composition.

摘要翻译： 具有优异的透湿性，柔软性和渗出性的多孔膜以及能够高速形成和拉伸具有上述特征的多孔膜的制造方法，该多孔膜由含有25〜55％的 聚烯烃树脂的重量和75〜45重量％的无机填料，其中聚烯烃树脂含有98〜70重量％的线性低密度聚乙烯和2〜30重量％的支链低密度聚乙烯，以及0.5〜5重量份 的基于100重量份组合物的液体乙烯-α-烯烃低聚物。

公开(公告)号：EP1156076B1

公开(公告)日：2007-05-30

申请号：EP00981800.6

申请日：2000-12-18

申请人： Mitsui Chemicals, Inc.

发明人： Yano, Shigeru Mitsui Chemicals, Inc. ,  Wang, Mindiaw Mitsui Chemicals, Inc. ,  Ichikawa, Taroh Mitsui Chemicals, Inc.

IPC分类号： C08J9/00 ,  C08J5/18

CPC分类号： C08J5/18 ,  C08J2323/08 ,  C08L23/06 ,  C08L23/0815 ,  Y10S521/908 ,  Y10T428/249979 ,  Y10T428/249986 ,  C08L2666/04

摘要： A porous film which is excellent in moisture permeability, flexibility, and oozing resistance; and a process in which a porous film having such properties can be produced through high-speed film formation and stretching. The porous film is formed from a composition comprising 25 to 55 wt.% polyolefin resin and 75 to 45 wt.% inorganic filler. It is characterized in that the polyolefin resin comprises 98 to 70 wt.% linear low-density polyethylene and 2 to 30 wt.% branched low-density polyethylene and further contains a liquid ethylene/a-olefin oligomer in an amount of 0.5 to 5 parts by weight per 100 parts by weight of the composition.