发明名称 |
Process for preparation of polyparaphenylene terephthalamide fibers |
摘要 |
A process for the preparation of poly-p-phenylene terephthalamide fibers according to the wet spinning method comprising passing an optically anisotropic solution of a poly-p-phenylene terephthalamide type polymer through a non-coagulating fluid layer and guiding the solution to a coagulating bath, characterized in that (a) filaments are taken out together with a stream of a coagulating solution from fine tube or fine hole arranged in the lower portion of the coagulating bath and the filaments are travelled through a second fine tube or fine hole arranged below said fine tube or fine hole through a space, and (b) in the fine tube or fine hole arranged in the lower portion of the coagulating bath, the stream of the coagulating solution flowing out together with the filaments is accelerated and in the second fine tube or fine hole, the speed of the stream of coagulating solution accompanying the filaments is decreased.
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申请公布号 |
US4728473(A) |
申请公布日期 |
1988.03.01 |
申请号 |
US19840583659 |
申请日期 |
1984.02.27 |
申请人 |
ASAHI KASEI KOGYO KABUSHIKI KAISHA |
发明人 |
SATOH, EIJI;YAMAGUCHI, JUN |
分类号 |
D01D5/06;D01F6/60;(IPC1-7):D01D5/06 |
主分类号 |
D01D5/06 |
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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