公开(公告)号：US4351860A

公开(公告)日：1982-09-28

申请号：US257010

申请日：1981-04-24

申请人： goichi Yoshida ,  Fusakazu Hayano ,  Yoshiro Ii

发明人： goichi Yoshida ,  Fusakazu Hayano ,  Yoshiro Ii

IPC分类号： D01F6/76 ,  B01D39/14 ,  B01D71/68 ,  B05D5/00 ,  B32B3/26 ,  B32B5/18 ,  B32B27/06 ,  B32B27/28 ,  C08G75/23 ,  C08J5/18 ,  C08J9/28

CPC分类号： B01D71/68 ,  B01D63/021 ,  B01D67/0016 ,  Y10T428/249955 ,  Y10T428/249979 ,  Y10T428/26 ,  Y10T428/264 ,  Y10T428/265 ,  Y10T428/266 ,  Y10T428/2975 ,  Y10T428/31533

摘要： A semipermeable membrane made of a polyaryl ether sulfone comprised of recurring units represented by the general formula (I): ##STR1## wherein X, X', X" and X'" are non-dissociative substituents, and l, m, n and o are integers of from 0 to 4. The membrane, which is composed of a single continuous polymer phase, has pores of a diameter increasing progressively and continuously from the surface layers to the center portion thereof.The membrane is prepared by the process wherein:the polyaryl ether sulfone is dissolved in a mixed solution to form a dope of the polyaryl ether sulfone;the polyaryl ether sulfone dope is extruded to form a fiber or film and, then;both sides of the fiber or film are contacted with a liquid miscible with the mixed solvent but incapable of dissolving the polyaryl ether sulfone to remove substantially all the mixed solvent from the fiber or film.

摘要翻译： 由由通式（I）表示的重复单元组成的聚芳基醚砜制成的半透膜：其中X，X'，X“和X”'是非解离取代基，其中l ，m，n和o为0-4的整数。由单一连续聚合物相组成的膜具有从表面层到其中心部分逐渐且连续地增加的直径的孔。 膜通过以下方法制备，其中：将聚芳基醚砜溶解在混合溶液中以形成聚芳基醚砜的掺杂物; 将聚芳基醚砜溶液挤出以形成纤维或膜，然后; 纤维或膜的两侧与可与混合溶剂混溶的液体接触，但不能溶解聚芳醚砜以从纤维或膜中基本上除去所有的混合溶剂。

公开(公告)号：US4286015A

公开(公告)日：1981-08-25

申请号：US35095

申请日：1979-05-01

申请人： Koichi Yoshida ,  Fusakazu Hayano ,  Yoshiro Ii

发明人： Koichi Yoshida ,  Fusakazu Hayano ,  Yoshiro Ii

IPC分类号： D01F6/76 ,  B01D39/14 ,  B01D71/68 ,  B05D5/00 ,  B32B3/26 ,  B32B5/18 ,  B32B27/06 ,  B32B27/28 ,  C08G75/23 ,  C08J5/18 ,  C08J9/28

CPC分类号： B01D71/68 ,  B01D63/021 ,  B01D67/0016 ,  Y10T428/249955 ,  Y10T428/249979 ,  Y10T428/26 ,  Y10T428/264 ,  Y10T428/265 ,  Y10T428/266 ,  Y10T428/2975 ,  Y10T428/31533

摘要： A semipermeable membrane made of a polyaryl ether sulfone comprised of recurring units represented by the general formula (I): ##STR1## wherein X, X', X" and X"' are non-dissociative substituents, and l, m, n and o are integers of from 0 to 4. The membrane, which is composed of a single continuous polymer phase, has pores of a diameter increasing progressively and continuously from the surface layers to the center portion thereof.The membrane is prepared by the process wherein:the polyaryl ether sulfone is dissolved in a mixed solution to form a dope of the polyaryl ether sulfone;the polyaryl ether sulfone dope is extruded to form a fiber or film and, then;both sides of the fiber or film are contacted with a liquid miscible with the mixed solvent but incapable of dissolving the polyaryl ether sulfone to remove substantially all the mixed solvent from the fiber or film.

摘要翻译： 由由通式（I）表示的重复单元组成的聚芳基醚砜制成的半透膜：其中X，X'，X“和X”'是非解离取代基，其中l ，m，n和o为0-4的整数。由单一连续聚合物相组成的膜具有从表面层到其中心部分逐渐且连续地增加的直径的孔。 膜通过以下方法制备，其中：将聚芳基醚砜溶解在混合溶液中以形成聚芳基醚砜的掺杂物; 将聚芳基醚砜溶液挤出以形成纤维或膜，然后; 纤维或膜的两侧与可与混合溶剂混溶的液体接触，但不能溶解聚芳醚砜以从纤维或膜中基本上除去所有的混合溶剂。