发明名称 |
PRODUCTION OF AND DRYING OF COPOLYMER FIBERS |
摘要 |
The present invention concerns processes for reducing water in never-dried fiber comprising copolymer derived from the copolymerization of para-phenylenediamine, 5(6)-amino-2-(p-aminophenyl)benzimidazole; and terephthaloyl dichloride, the process having the following steps in a continuous process, (a) a step of drying a never-dried fiber having at least 0.1% sulfur at less than 150° C. until the moisture content of the fiber is less than 60 weight percent; and (b) a step of further drying the fiber above 150° C. while the moisture content of the fiber is no more than 60 weight percent; and the fiber being further heated to at least 350° C. in either an additional continuous or separate step. |
申请公布号 |
EP2663679(A1) |
申请公布日期 |
2013.11.20 |
申请号 |
EP20120702919 |
申请日期 |
2012.01.13 |
申请人 |
E.I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
ALLEN, STEVEN R.;NEWTON, CHRISTOPHER WILLIAM |
分类号 |
D01F6/80;C08G69/32;C08G73/18;D01D10/02;D01D10/06 |
主分类号 |
D01F6/80 |
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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