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    Method of producing microporous polyolefin membrane
    2.
    发明公开
    Method of producing microporous polyolefin membrane 失效
    生产微孔聚烯烃膜的方法

    公开(公告)号：EP0824958A3

    公开(公告)日：1998-07-08

    申请号：EP97306323.3

    申请日：1997-08-20

    申请人： Tonen Chemical Corporation

    发明人： Takita, Kotaro, c/o Tonen Chemi. Co. Tech. Dev. C. ,  Kono, Koichi, c/o Tonen Chemi. Co. Tech. Dev. C. ,  Kaimai, Norimitsu, Tonen Chemi. Co. Tech. Dev. C.

    IPC分类号： B01D71/26 ,  C08J9/28

    CPC分类号： C08J9/28 ,  B01D67/0009 ,  B01D69/02 ,  B01D71/26 ,  B01D2323/12 ,  B01D2325/02 ,  B01D2325/20 ,  C08J2323/02

    摘要： A method of producing a microporous polyolefin membrane having a relatively large pore size and a high permeability, the membrane being suitable for use in water treatment, microfiltration, etc. The method comprises dissolving a polyolefin composition in a solvent to prepare a solution, extruding the solution through a die lip into a form of gel-like sheet, rapidly cooling the gel-like sheet, removing a residual solvent in the cooled sheet by a washing solvent and drying the resultant sheet to remove the washing solvent. The polyolefin composition is a mixture of (A) an ultra high molecular weight polyolefin having a weight average molecular weight of 5 x 10 5 or more and (B) a polyolefin having a weight average molecular weight less than 5 x 10 5 , and a weight ratio of (B)/(A) is 0.2 to 20.

    摘要翻译： 一种制造具有较大孔径和高渗透性的微孔聚烯烃膜的方法，该膜适用于水处理，微滤等。该方法包括将聚烯烃组合物溶解在溶剂中以制备溶液，将该溶液挤出 溶液通过模唇形成凝胶状片材形式，快速冷却凝胶状片材，通过洗涤溶剂除去冷却片材中的残留溶剂并干燥所得片材以除去洗涤溶剂。 该聚烯烃组合物是（A）重均分子量为5×10 5以上的超高分子量聚烯烃与（B）重均分子量不足5×10 5的聚烯烃的混合物， （B）/（A）为0.2〜20。

    Method of producing microporous polyolefin membrane
    3.
    发明公开
    Method of producing microporous polyolefin membrane 失效
    Verfahren zur Herstellung einermikroporösen聚烯烃

    公开(公告)号：EP0824958A2

    公开(公告)日：1998-02-25

    申请号：EP97306323.3

    申请日：1997-08-20

    申请人： Tonen Chemical Corporation

    发明人： Takita, Kotaro, c/o Tonen Chemi. Co. Tech. Dev. C. ,  Kono, Koichi, c/o Tonen Chemi. Co. Tech. Dev. C. ,  Kaimai, Norimitsu, Tonen Chemi. Co. Tech. Dev. C.

    IPC分类号： B01D71/26 ,  C08J9/28

    CPC分类号： C08J9/28 ,  B01D67/0009 ,  B01D69/02 ,  B01D71/26 ,  B01D2323/12 ,  B01D2325/02 ,  B01D2325/20 ,  C08J2323/02

    摘要： A method of producing a microporous polyolefin membrane having a relatively large pore size and a high permeability, the membrane being suitable for use in water treatment, microfiltration, etc. The method comprises dissolving a polyolefin composition in a solvent to prepare a solution, extruding the solution through a die lip into a form of gel-like sheet, rapidly cooling the gel-like sheet, removing a residual solvent in the cooled sheet by a washing solvent and drying the resultant sheet to remove the washing solvent. The polyolefin composition is a mixture of (A) an ultra high molecular weight polyolefin having a weight average molecular weight of 5 x 10 5 or more and (B) a polyolefin having a weight average molecular weight less than 5 x 10 5 , and a weight ratio of (B)/(A) is 0.2 to 20.

    摘要翻译： 一种生产具有较大孔径和高渗透性的微孔聚烯烃膜的方法，该膜适用于水处理，微滤等。该方法包括将聚烯烃组合物溶解在溶剂中以制备溶液，挤出 通过模唇将其溶解成凝胶状片材的形式，快速冷却凝胶状片材，通过洗涤溶剂除去冷却片材中的残留溶剂，并干燥所得片材以除去洗涤溶剂。 聚烯烃组合物是（A）重均分子量为5×10 5以上的超高分子量聚烯烃和（B）重均分子量小于5×10 5的聚烯烃的混合物 >，（B）/（A）的重量比为0.2〜20。