发明名称 |
AETHYLEN/VINYLALKOHOL-COPOLYMERHOHLFASERMEMBRAN UND VERFAHREN ZU IHRER HERSTELLUNG |
摘要 |
There is provided a hollow fiber membrane of ethylene-vinyl alcohol copolymer which is produced by a process comprising extruding a spinning solution of an ethylene-vinyl alcohol copolymer in a solvent selected from the group consisting of dimethylsulfoxide, dimethylacetamide, pyrrolidone, N-methylpyrrolidone and mixtures thereof through a hollow fiber spinneret while a liquid coagulant is introduced into a central aperture of said spinneret, passing the spun fiber through a gaseous atmosphere in a manner such that the fiber is drawn 0.5 to 20 times its extrusion rate and then coagulating said fiber in a coagulating bath at a temperature within the range satisfying the following relationship: when 15</=C</=40, 1/4C+20</=T</=1/4C+57 wherein C denotes the copolymer concentration of the spinning solution (wt. %) and T denotes the coagulation temperature ( DEG C.). The coagulating liquid can be water or a mixture of the same solvent as that of said spinning solution with no less than 20 weight % of water. |
申请公布号 |
DE3016542(A1) |
申请公布日期 |
1980.11.06 |
申请号 |
DE19803016542 |
申请日期 |
1980.04.29 |
申请人 |
KURARAY CO.,LTD. |
发明人 |
TANAKA,TAKU;YAMASHITA,SHUZO;TANII,HIROKUNI;KURASHIKI,OKAYAMA;KUBOTSU,AKIRA;KAWAI,SYUJI |
分类号 |
B01D69/08;B01D71/38;D01D5/24;D01F6/30;D01F6/34;(IPC1-7):B01D13/04;B01D31/00;A61M1/03 |
主分类号 |
B01D69/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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