公开(公告)号：EP2262579A2

公开(公告)日：2010-12-22

申请号：EP09729540.6

申请日：2009-04-08

申请人： SK Energy Co., Ltd.

发明人： LEE, Jean ,  SUNG, Jongmoon ,  LEE, Cholho ,  KIM, Yongkyoung ,  LEE, Youngkeun

IPC分类号： B01D71/00 ,  H01M2/16

CPC分类号： H01M2/145 ,  B01D67/0079 ,  B01D69/141 ,  B01D71/26 ,  H01M2/1653 ,  H01M2/166 ,  H01M10/0525 ,  Y10T428/249978 ,  Y10T428/249979 ,  Y10T428/24998 ,  Y10T428/249981 ,  Y10T428/249986

摘要： Provided is a microporous polyolefin composite film with a thermally stable porous layer at high temperature, particularly, to the microporous polyolefin composite film in which the thermally stable porous layer at high temperature, which contains organic or inorganic particles and heat-resistant polymer having aromatic ring in main chain and also having a melting temperature or a glass transition temperature of 170 to 500°C, is formed on one surface or both surfaces of a polyolefin microporous film by a phase separation, wherein the composite film with the porous layer has a permeability of 1.5x105 to 20.OxIO 5 Darcy, a meltdown temperature of 160 to 300°C, a MD/TD shrinkage of 1 to 40% at a temperature of 15O°C for 60 minutes.

公开(公告)号：EP2260523A2

公开(公告)日：2010-12-15

申请号：EP09730415.8

申请日：2009-04-08

申请人： SK Energy Co., Ltd.

发明人： LEE, Jean ,  SUNG, Jongmoon ,  KIM, Yongkyoung ,  LEE, Youngkeun

IPC分类号： H01M2/16

CPC分类号： H01M2/1653 ,  H01M2/166 ,  H01M2/1686 ,  H01M10/052 ,  Y10T428/2495

摘要： Provided is a method of manufacturing a microporous polyolefin composite film with a thermally stable porous layer at high temperature, particularly, to a method of manufacturing a microporous polyolefin composite film with a thermally stable porous layer at high temperature, comprising preparing a polyolefin microporous film using a composition containing a polyolefin resin; coating a solution, in which a high heat-resistant resin is dissolved in a solvent, on one surface or both surfaces of the polyolefin microporous film; phase-separating the polyolefin microporous film coated with the solution by contacting with a nonsolvent after the coating; and drying the polyolefin microporous film so as to remove the solvent and nonsolvent remained after the phase-separating, and thus forming the thermally stable layer at high temperature.