United States Patent | 5,296,543 |
Kasowski, et. al. | Mar. 22, 1994 |
Inventors: | Kasowski; Robert V. (West Chester, PA); Lee; Kiu-Seung (Richmond, VA); Wang; Ying (Wilmington, DE). |
Assignee: | E. I. Du Pont de Nemours and Company (Wilmington, DE). |
Appl. No.: | 115,850 |
Filed: | Sept. 8, 1993 |
Intl. Cl.: | C08L 77/00; |
U.S. Cl.: | 524/606.; |
Field of Search: | 606 |
3,063,966 | Nov., 1962 | Kwolck et al. | 260/ 78 |
4,987,215 | Jan., 1991 | Keil et al. | 528/329 |
5,084,497 | Jan., 1992 | Burch, Jr. et al. | 524/173 |
5,177,175 | Jan., 1993 | Kiriyama et al. | 528/183 |
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The disclosed invention relates to novel aromatic polyamide compositions with a fullerene component and fibers therefrom which have improved torsional strength and a process for preparing said fibers.