发明名称 |
HOHLE, WASSERABSORBIERENDE POLYESTERFAEDEN SOWIE VERFAHREN ZU DEREN HERSTELLUNG |
摘要 |
Hollow water-absorbing polyester filaments, each having fine pores evenly distributed throughout the filament and extending approximately in parallel to the filament axis, are produced by melt-spinning a blend of a polyester and a pore-forming agent consisting of at least one sulfonate compound of the formula: R'SO3M' wherein R' is an alkyl radical having 3 to 30 carbon atoms or an aryl or alkylaryl radical having 7 to 40 carbon atoms and M' is an alkali or alkaline earth metal, and by removing at least a portion of the sulfonate compound from the hollow filaments by using an alkali aqueous solution so as to cause a number of fine pores to be formed in the hollow filaments and to cause each hollow to be connected to the outside of the filament through the fine pores. |
申请公布号 |
DE2902971(A1) |
申请公布日期 |
1979.08.02 |
申请号 |
DE19792902971 |
申请日期 |
1979.01.26 |
申请人 |
TEIJIN LTD. |
发明人 |
SHIOZAKI,MASAHIRO;NAWATA,KIYOSHI;MATSUYAMA,EHIME;WADA,OSAMU;TSUNAWAKI,KIYOKAZU;KURATSUJI,TAKATOSHI;FUNAKOSHI,WATARU;SUZUKI,TOGI |
分类号 |
B01D71/48;D01D5/24;D01D5/247;D01F6/62;D01F6/92;D06M11/00;D06M11/38;D06M101/00;D06M101/16;D06M101/30;D06M101/32;(IPC1-7):D01F1/08 |
主分类号 |
B01D71/48 |
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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