| 摘要 |
<p>A method of producing a microporous membrane includes combining at least a first polyethylene and a first diluent; combining at least a second polyethylene and a second diluent; combining at least a third polyethylene and a third diluent; forming from the combined polyethylenes and diluents a multi-layer extrudate having a first layer containing the first polyethylene, a second layer containing the second polyethylene, and a third layer located between the first and second layers containing the third polyethylene, wherein the extrudate contains polyethylene having a terminal unsaturation≧0.20 per 10,000 carbon atoms in an amount of 4.0 wt. % to 35.0 wt. %; and removing at least a portion of the first, second, and third diluents from the multi-layer extrudate to produce the membrane.</p> |
