Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Reshaping running or indefinite-length work
Patent
1989-05-19
1990-01-30
Foelak, Morton
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Reshaping running or indefinite-length work
2642902, 524592, 525471, C08F28300, B29C 5500, B29D 722
Patent
active
048972380
ABSTRACT:
Disclosed herein is a stretched poly(arylene thioether-ketone) film made of a thermoplastic material which comprises (A) 100 parts by weight 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 and a melt crystallization temperature, Tmc (420.degree. C./10 min) of at least 210.degree. C., and a reduced viscosity of 0.3-2 dl/g as determined by viscosity measurement at 25.degree. C. and a polymer concentration of 0.5 g/dl in 98 percent by weight sulfuric acid; and optionally, (B) up to 100 parts by weight of at least one of thermoplastic resins and/or up to 15 parts by weight of at least one of fillers. Its production process is also disclosed.
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patent: 4690972 (1987-09-01), Johnson et al.
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patent: 4745167 (1988-05-01), Iizuka et al.
Indian J. Chem., vol. 21A, May 1982, pp. 501-502.
Indian Journal of Pure and Applied Physics, vol. 22, Apr. 1984, pp. 247-248.
Mol. Cryst. Liq. Cryst., vol. 83, 1982, pp. 229-238.
Iizuka Yo
Katto Takayuki
Kouyama Toshitaka
Mizuno Toshiya
Satake Yoshikatsu
Foelak Morton
Kureha Kagaku Kogyo K.K.
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