发明名称 |
BATTERY SEPARATORS WITH REDUCED SPLITTING PROPENSITY |
摘要 |
<p>A split resistant microporous membrane is provided for use in preparing a battery separator. The microporous membrane has a TD tensile strength to MD tensile strength ratio of from about 0.12 to about 1.2, preferably from about 0.5 to about 1. The microporous membrane is made by a process which includes the steps of preparing a film precursor by blown film extrusion at a blow-up ratio of at least 1.5, annealing the film precursor, and stretching the resultant annealed film precursor to form the microporous membrane.</p> |
申请公布号 |
SG89340(A1) |
申请公布日期 |
2002.06.18 |
申请号 |
SG20000004323 |
申请日期 |
2000.07.31 |
申请人 |
CELGARD INC. |
发明人 |
ROBERT W. CALLAHAN;RONALD W. CALL;TA-HUA YU;KEN J. HARLESON |
分类号 |
C08J9/00;B01D67/00;B01D69/02;B01D71/26;B29C55/04;B29C55/06;B29C55/28;H01M2/14;H01M2/16;H01M6/50;H01M10/052;H01M10/36;(IPC1-7):H01M2/16 |
主分类号 |
C08J9/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|