Wet spinning process for aramid polymer containing salts

Details Wet spinning process for aramid polymer containing salts Wet spinning process for aramid polymer containing salts

1996-05-21

1997-09-16

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

2642104, 2642105, 2642108, 26421115, 26421116, 264233, D01D 506, D01F 660

Patent

active

056677430

ABSTRACT:
A process for wet spinning a meta-aramid polymer solutions having a salt content of at least 3 percent by weight produces a one step, fully wet drawable fiber that has desirable physical properties without subjecting the fiber to hot stretching.

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Wet Spinning of Aliphatic and Aromatic Polyamides, Tony A. Hancock, Joseph E. Spruiell, and James L. White, Journal of Applied Polymer Science, vol. 21, 1227-1247 (1977), pp. 1227-1247.
Coagulation Phenomena of Poly-m-Phenylene Isophthalamide/N-Methylpyrrolidone Solution; Keiji Kouzal et al.; Tokyo Research Center, Teijin, Ltd., 4-3-2 Asahigaoka, Hino, Tokyo, 191 Japan; Sen-i Gakkaishi 48, No. 2:55-65 (1992).
Wet Spinning of Poly-m-Phenylene Isophthalamide Fiber in Aqueous Solution of Calcium Chloride, Keiji Kouzal et al.; Tokyo Research Center, Teijin, Ltd., 4-3-2 Asahigaoka, Hino, Tokyo, 191 Japan; Sen-i Gakkaishi 48, No. 2:67-73 (1992).
Translation of Japan 56-5,844 (Published Feb. 7, 1981).

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