Stock material or miscellaneous articles – Composite – Of polythioether
Patent
1988-10-21
1992-05-05
Lesmes, George F.
Stock material or miscellaneous articles
Composite
Of polythioether
428237, 428240, 428241, 428265, 428267, 428272, 428273, 428283, 428286, 428290, 428297, 428302, 525153, 528226, D03D 300, D03D 1500, D03D 1700, D03D 2500
Patent
active
051106817
ABSTRACT:
Disclosed herein is a melt-stable poly(arylene thioether-ketone) prepreg, which comprises in integral combination (A) 20-90 wt. % of a fibrous reinforcing material which comprises long fibers and/or at least one shaped long fiber body, said fibers and/or body being formed of inorganic fibers and/or organic fibers; and (B) 10-80 wt. % of a a thermoplastic matrix material composed principally of a melt-stable poly(arylene thioether-ketone) having predominant recurring units of the formula ##STR1## and having a melting point, Tm of 310.degree.-380.degree. C., a residual melt crystallization enthalpy, .DELTA.Hmc (420.degree. C/10 min) of at least 10 J/g, a melt crystallization temperature, Tmc (420.degree.C./10 min) of at least 210.degree. C. and a reduced viscosity of 0.2-2 dl/g. A melt-stable molded or formed product can also be obtained by shaping the above prepreg or an arrangement or laminate of prepregs of the same type as the above prepreg at 140.degree.-450.degree. C. under stresses.
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Kashiwadate Ken
Katto Takayuki
Sakaguchi Yasuo
Satake Yoshikatsu
Shiiki Zenya
Kureha Kagaku Kogyo K. K.
Lesmes George F.
Weisberger Richard
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