C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
402/33, 400/5403
C08L 81/02 (2006.01) B29C 55/00 (2006.01) C08G 75/02 (2006.01) C08J 5/18 (2006.01) C08L 101/00 (2006.01)
Patent
CA 1304876
- 59 - ABSTRACT Disclosed herein is a molded or formed poly(arylene thioether-ketone) article made of a thermoplastic material which comprises 100 parts by weight of a melt-stable poly(arylene thioether-ketone) (PTK) and if desired, up to 100 parts by weight of at least one of thermoplastic resins and/or up to 300 parts by weight of at least one of fibrous fillers and/or at least one of inorganic fillers. 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 crystallization temperature, Tmc (420°C/10 min) of at least 210°C, and a reduced viscosity of 0.2-2 d?/g as determined by viscosity measurement at 25°C and a polymer concentration of 0.5 g/d? in 98 percent by weight sulfuric acid. This invention provides extruded articles, injection-molded articles, unstretched films and the like, all of which have practical physical properties, by using a novel high-density and high-crystallinity PTK having melt stability sufficient to apply conventional melt processing techniques.
566644
Iizuka Yo
Katto Takayuki
Kouyama Toshitaka
Satake Yoshikatsu
Shiiki Zenya
Kirby Eades Gale Baker
Kureha Kagaku Kogyo K.k.
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