公开(公告)号：US5057218A

公开(公告)日：1991-10-15

申请号：US551021

申请日：1990-07-11

申请人： Toshinobu Koshoji ,  Hironari Honda ,  Kiyonobu Okamura ,  Kunio Misoo ,  Osamu Nishimura

发明人： Toshinobu Koshoji ,  Hironari Honda ,  Kiyonobu Okamura ,  Kunio Misoo ,  Osamu Nishimura

IPC分类号： B01D67/00 ,  B01D71/26 ,  B01D71/40 ,  C08J5/18 ,  C08L23/02 ,  C08L33/14

CPC分类号： B01D67/0027 ,  B01D69/08 ,  B01D71/26 ,  B01D71/76 ,  C08J5/18 ,  C08L23/02 ,  C08L33/14 ,  B01D2323/06 ,  B01D2323/12 ,  B01D2325/36 ,  B01D71/40 ,  C08J2323/02 ,  C08J2333/14

摘要： Disclosed is a porous membrane comprising (1) a hydrophilic copolymer X composed principally of (poly)alkylene glycol mono(meth)acrylate units A and ethylene units B and (2) a polyolefin Y, the (poly)alkylene glycol mono(meth)acrylate units A being of the formula ##STR1## where R.sup.1 and R.sup.2 independently represent hydrogen or methyl, and n has a value in the range of 1 to 9. This porous membrane has permanent hydrophilicy suitable for the treatment of water-based liquids and can be produced by an industrially advantageous process. This process comprises melt-forming a blend of (1) a hydrophilic copolymer X composed principally of (poly)alkylene glycol mono(meth)acrylate units A and ethylene units B and (2) a polyolefin Y; heat-treating the melt-formed product in a vacuum or an inert gas medium at a temperature not higher than the melting point of polyolefin Y for a period of an hour or more; and stretching the heat-treated, melt-formed product to make it porous.

公开(公告)号：US5677360A

公开(公告)日：1997-10-14

申请号：US459633

申请日：1995-06-02

申请人： Hisayoshi Yamamori ,  Makoto Uchida ,  Kenji Niikawa ,  Toshinobu Koshoji

发明人： Hisayoshi Yamamori ,  Makoto Uchida ,  Kenji Niikawa ,  Toshinobu Koshoji

IPC分类号： B01D67/00 ,  B01D71/26 ,  B01D71/38 ,  C08J5/18 ,  C08L23/02 ,  C08L23/06 ,  C08L23/08 ,  D01F6/46 ,  B29C47/88

CPC分类号： C08J5/18 ,  B01D67/0027 ,  B01D71/26 ,  B01D71/76 ,  C08L23/06 ,  D01F6/46 ,  B01D2325/36 ,  B01D71/38 ,  C08J2323/02 ,  C08L2203/12 ,  C08L23/0861

摘要： A hydrophilic polymer alloy which has a permanent hydrophilic nature, a sufficient mechanical strength and a high safety and which is suitable for the formation of hydrophilic porous membranes manufacturable by an industrially advantageous process can be prepared by blending an amorphous hydrophilic copolymer (X) containing 10 mole % or more of an ethylene unit, 10 to 60 mole % of a vinyl alcohol unit and 1 mole % or more of a vinyl acetate unit with a polyolefin (Y). Furthermore, this polymer alloy is also suitable for the formation of hydrophilic (porous) fibers having a sufficient mechanical strength and antistatic function.

摘要翻译： 具有永久亲水性，足够的机械强度和高安全性并且适于形成可通过工业上有利的方法制造的亲水性多孔膜的亲水性聚合物合金可以通过将含有10个 摩尔％以上的乙烯单元，10〜60摩尔％的乙烯醇单元和1摩尔％以上的具有聚烯烃（Y）的乙酸乙烯酯单元。 此外，该聚合物合金也适于形成具有足够的机械强度和抗静电功能的亲水（多孔）纤维。