发明名称 |
Fibrillated polypyridobisimidazole floc |
摘要 |
The invention concerns a process for making a fibrillated polypyridobisimidazole floc comprising the steps of: cutting polypyridobisimidazole filaments to an average cut length of from about 0.5 to 10 mm; and applying energy to the polypyridobisimidazole filaments to produce a fibrillated floc having essentially the same average cut length after the application of energy as before the application of energy; where the fibrillated floc having a Canadian Standard Freeness (CSF), when dispersed in water by itself, of from about 400 to 750 ml.
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申请公布号 |
US7686920(B2) |
申请公布日期 |
2010.03.30 |
申请号 |
US20060084006 |
申请日期 |
2006.12.19 |
申请人 |
E.I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
LEVIT MIKHAIL R.;AMMA ACHIM;MERRIMAN EDMUND A. |
分类号 |
D21F11/00 |
主分类号 |
D21F11/00 |
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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