中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

133 records (took 0.021 seconds)

    Polypropylene membranes
    121.
    发明公开
    Polypropylene membranes 失效
    聚丙烯膜

    公开(公告)号：EP0108601A3

    公开(公告)日：1987-05-20

    申请号：EP83306652

    申请日：1983-11-01

    Applicant: Akzona Incorporated

    Inventor： Vitzthum, Gunter H. ,  Davis, Michael A.

    IPC: B01D13/04

    CPC classification number: C08J9/28 ,  B01D67/003 ,  B01D69/02 ,  B01D71/26 ,  C08J2201/03 ,  C08J2201/052 ,  C08J2201/0542 ,  C08J2323/12 ,  Y10T428/249979

    Abstract: There is disclosed a substantially skinless microporous polypropylene membrane characterized by having
    (a) a bubble point in the range of from 25 to 50 psi; (b) a thickness in the range of from 3 to 7 mils; (c) a nitrogen flow rate of at least 0.5 liters per square centimeter-minute; (d) a burst strength of at least 10 psi; and (e) an S value of about 15, or less. There is also disclosed a method of preparing a microporous polypropylene membrane comprising heating a mixture of about 30 percent polypropylene and about 70 percent, N,N-bis(2-hydroxyethyl)tallowamine, by weight, to a temperature and for a time sufficient to form a homogeneous solution, casting or extruding said solution at a thickness in the range of from 3 to 7 mils, onto a chill roll maintained at a temperature in the range of from 50 to 80°C, allowing the solution to solidify on the chill roll to form a solid sheet, removing the solid sheet from the chill roll and removing at least a substantial portion of the liquid from the sheet to form the microporous polypropylene membrane.

    Polypropylene membranes
    122.
    发明公开
    Polypropylene membranes 失效
    Polypropylenmembranen。

    公开(公告)号：EP0108601A2

    公开(公告)日：1984-05-16

    申请号：EP83306652.5

    申请日：1983-11-01

    Applicant: AKZO N.V.

    Inventor： Vitzthum, Gunter H. ,  Davis, Michael A.

    IPC: B01D71/26 ,  B01D67/00

    CPC classification number: C08J9/28 ,  B01D67/003 ,  B01D69/02 ,  B01D71/26 ,  C08J2201/03 ,  C08J2201/052 ,  C08J2201/0542 ,  C08J2323/12 ,  Y10T428/249979

    Abstract: There is disclosed a substantially skinless microporous polypropylene membrane characterized by having

    (a) a bubble point in the range of from 25 to 50 psi;
    (b) a thickness in the range of from 3 to 7 mils;
    (c) a nitrogen flow rate of at least 0.5 liters per square centimeter-minute;
    (d) a burst strength of at least 10 psi; and
    (e) an S value of about 15, or less.

    There is also disclosed a method of preparing a microporous polypropylene membrane comprising heating a mixture of about 30 percent polypropylene and about 70 percent, N,N-bis(2-hydroxyethyl)tallowamine, by weight, to a temperature and for a time sufficient to form a homogeneous solution, casting or extruding said solution at a thickness in the range of from 3 to 7 mils, onto a chill roll maintained at a temperature in the range of from 50 to 80°C, allowing the solution to solidify on the chill roll to form a solid sheet, removing the solid sheet from the chill roll and removing at least a substantial portion of the liquid from the sheet to form the microporous polypropylene membrane.

    對位定向之芳族聚醯胺多孔薄膜
    125.
    发明专利
    對位定向之芳族聚醯胺多孔薄膜 失效
    对位定向之芳族聚酰胺多孔薄膜

    公开(公告)号：TW381105B

    公开(公告)日：2000-02-01

    申请号：TW085108657

    申请日：1996-07-17

    Applicant: 住友化學工業股份有限公司

    Inventor： 高橋勉 ,  野辰男 ,  本佳史

    IPC: C08G

    CPC classification number: C08J9/26 ,  C08J5/18 ,  C08J9/28 ,  C08J2201/0542 ,  C08J2377/10 ,  H01M2/162 ,  H01M2/1653 ,  Y10T428/31725

    Abstract: 一種對位定向芳族聚醯胺多孔膜，該對位定向芳族聚醯胺多孔膜包含直徑不超過l微米的纖絲且其構造為該纖絲係平面排列成網絡或不織物形式且以層的形式壓合而成的，其中該膜在200至300℃的熱線性膨脹係數係在±50×10^-6/℃之內且其空洞空間的百分比為30至95％；使用該多孔膜的電池分隔器；及一種製備多孔膜之方法，其包括下列步驟(a)至(c)：
    步驟(a):用含有l至10重量％之具有l.O至2.8分升/克的固有黏度的對位定向芳族聚醯胺，和l至10重量％的鹼金屬或鹼土金屬氯化物在極性醯胺溶劑或極性溶劑之中的溶液形成膜狀材料;
    步驟(b):將該膜狀材保持在不低於20℃或不高於-5℃的溫度下以沈積該對位定向芳族聚醯胺；及
    步驟(c):將步驟(b)中所得膜狀材料浸漬在水溶液或醇溶液中以洗提出溶劑和鹼金屬或鹼土金屬氯化物，接著予以乾燥而得對位定向芳族聚醯胺多孔膜。
    本發明提出具有不織物所不能完成的均勻且細微空洞空間之對位聚芳醯胺多孔膜，一種製備彼等的方法及經由利用對位芳族聚醯胺的特性(例如高耐熱性，高剛性，高強度等)而用該對位聚芳醯胺多孔膜製成之電池分隔器。

    Abstract in simplified Chinese: 一种对位定向芳族聚酰胺多孔膜，该对位定向芳族聚酰胺多孔膜包含直径不超过l微米的纤丝且其构造为该纤丝系平面排列成网络或不织物形式且以层的形式压合而成的，其中该膜在200至300℃的热线性膨胀系数系在±50×10^-6/℃之内且其空洞空间的百分比为30至95％；使用该多孔膜的电池分隔器；及一种制备多孔膜之方法，其包括下列步骤(a)至(c)： 步骤(a):用含有l至10重量％之具有l.O至2.8分升/克的固有黏度的对位定向芳族聚酰胺，和l至10重量％的碱金属或碱土金属氯化物在极性酰胺溶剂或极性溶剂之中的溶液形成膜状材料; 步骤(b):将该膜状材保持在不低于20℃或不高于-5℃的温度下以沉积该对位定向芳族聚酰胺；及 步骤(c):将步骤(b)中所得膜状材料浸渍在水溶液或醇溶液中以洗提出溶剂和碱金属或碱土金属氯化物，接着予以干燥而得对位定向芳族聚酰胺多孔膜。 本发明提出具有不织物所不能完成的均匀且细微空洞空间之对位聚芳酰胺多孔膜，一种制备彼等的方法及经由利用对位芳族聚酰胺的特性(例如高耐热性，高刚性，高强度等)而用该对位聚芳酰胺多孔膜制成之电池分隔器。

Patent Agency Ranking