公开(公告)号：EP1963408A4

公开(公告)日：2011-09-28

申请号：EP06732762

申请日：2006-03-31

申请人： SK ENERGY CO LTD

发明人： LEE YOUNG-KEUN ,  RHEE JANG-WEON ,  KANG GWI-GWON ,  JUNG IN-HWA ,  LEE JE-AN

IPC分类号： C08J5/22 ,  B01D53/22 ,  B01D67/00 ,  B01D69/02 ,  B01D71/26 ,  B29C55/00 ,  C08J5/18

CPC分类号： B29C55/005 ,  B01D53/228 ,  B01D67/0009 ,  B01D67/0027 ,  B01D69/02 ,  B01D71/26 ,  B01D2325/02 ,  B29K2023/065 ,  B29K2023/12 ,  B29K2105/04 ,  B29K2995/004 ,  C08J5/18 ,  C08J2323/04

摘要： Microporous films of the semicrystalline polymer according to the present invention are obtained by stretching semicrystalline polymer sheets extruded through a die with the phase separation between a semicrystalline polymer resin and a diluent, of which sheet is comprised of a crystalline region, a pore region, and a non-crystalline region which is a swollen region swollen by the diluent, and extracting the diluent. The pore region has irregular sizes and shapes, has an average diameter of 0.01 mum to 2 mum, is connected in three dimensions, penetrates the thickness of the sheet, has gas permeability, and has a volume ratio with respect to the volume of the entire composition of 10% to 40%. The swollen non-crystalline region has a swelling ratio of 200% or greater and is a region making micropores of which average diameter is 0.1 mum to 1 mum as the region is split and pores are generated during the process of stretching. Thus manufactured microporous films are characterized by having a gas permeability of 1.3x10 -5 Darcy or greater as well as a puncture strength of 0.1 N/mum or greater even without tearing destroying of the pores during stretching.

公开(公告)号：EP1984435A4

公开(公告)日：2011-09-14

申请号：EP06732763

申请日：2006-03-31

申请人： SK ENERGY CO LTD

发明人： LEE YOUNG-KEUN ,  RHEE JANG-WEON ,  KANG GWI-GWON ,  JUNG IN-HWA ,  LEE JE-AN

IPC分类号： C08J5/22 ,  B29C55/00 ,  H01M2/16

CPC分类号： B29C55/005 ,  B29K2023/06 ,  B29K2023/12 ,  B29K2105/04 ,  C08J5/18 ,  C08J2323/06 ,  H01M2/1653 ,  Y10T428/249953