| 摘要 |
PURPOSE:To prepare a polyethylene porous film or sheet excellent in mechanical strength. CONSTITUTION:This porous film or sheet is obtained by forming a film or sheet from a composition comprising an ultrahigh mol.wt. polyethylene having a viscosity-average mol.wt. of >=800000, a polyolefin having a viscosity-average mol.wt. of <=600000, and a plasticizer, and subsequently extracting and eliminating the plasticizer. |
