Melt-stable poly(arylene thioetherketone) and production process

Details Melt-stable poly(arylene thioetherketone) and production process Melt-stable poly(arylene thioetherketone) and production process

1989-05-19

1989-12-12

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From ketone or ketene reactant

528222, C08G 200

Patent

active

048868710

ABSTRACT:
Disclosed herein are 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 as measured at 25.degree. C. and a polymer concentration of 0.5 g/dl in 98 wt. % sulfuric acid as well as a production process of the poly(arylene thioether-ketone). The poly(arylene thioether-ketone) has melt stability so that conventional melt processing techniques can be applied easily. The poly(arylene thioether-ketone) is a highly-crystalline polymer whose density is at least 1.34 g/cm.sup.3 when annealed at 280.degree. C. for 30 minutes.

REFERENCES:
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patent: 4698415 (1987-10-01), Sinclair et al.
patent: 4716212 (1987-12-01), Gaughan
patent: 4745167 (1988-05-01), Iizuka et al.
Mol. Cryst. Liq. Cryst., vol. 83, 1982, pp. 229-238.
Indian J. Chem., vol. 21A, May 1982, pp. 501-502.
Indian Journal of Pure and Applied Physics, vol. 22, Apr. 1984, pp. 247-248.

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