Poly(arylene thioether-ketone) fibers and production process...

Details Poly(arylene thioether-ketone) fibers and production process... Poly(arylene thioether-ketone) fibers and production process...

D - Textiles, Paper

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D01D 5/098 (2006.01) B29C 55/00 (2006.01) C08G 75/02 (2006.01) C08J 5/18 (2006.01) C08L 81/02 (2006.01) D01F 6/76 (2006.01) C08L 101/00 (2006.01)

Patent

CA 1289707

ABSTRACT Disclosed herein are poly(arylene thioether- ketone) fibers obtained by melt spinning a thermo- plastic material which comprises 100 parts by weight of a melt-stable poly(arylene thioether-ketone) (PTK) and optionally, up to 50 parts by weight of at least one of thermoplastic resins. The PTK has predominant recurring units of the formula Image , wherein the -CO- and -S- are in the para position to each other, and has a melting point, Tm of 310-380°C, a residual melt crystallization enthalpy, .DELTA.Hmc (420°C/10 min) of at least 10 J/g, a melt crystalliza- tion temperature, Tmc (420°C/10 min) of at least 210°C, and a reduced viscosity of 0.3-2 dl/g as determined by viscosity measurement at 25°C and a polymer concentration of 0.5 g/dl in 98 percent by weight sulfuric acid. The PTK fibers of this invention have high heat resistance and strength.

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