Process for preparation of molding product from syndiotactic sty

Details Process for preparation of molding product from syndiotactic sty Process for preparation of molding product from syndiotactic sty

1990-01-16

1992-11-17

Teskin, Fred

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

Synthetic resins

Treating polymer containing material or treating a solid...

526346, 5263472, 26433117, 2641761, 524115, 524121, 524128, 524291, 524577, 525241, C08J 500, C08L 2504

Patent

active

051644797

ABSTRACT:
Disclosed are a material for extrusion molding comprising a styrene-based polymer having a high degree of syndiotactic configuration, a melt viscosity of 10.sup.3 to less than 10.sup.6 poise measured at 300.degree. C. and a shearing rate of 10/sec, and a crystallinity of 15% or more, a process for preparation of the said material and a process for preparation of a molding product therefrom.
The molding product prepared according to the present invention has excellent properties such as heat resistance and chemical resistance.

REFERENCES:
patent: 4959435 (1990-09-01), Seitz et al.
patent: 5006296 (1991-04-01), Pedersen
Spencer et al., "The Viscous Flow of Molten Polystyrene . . . ", Journal of Colloid Sci., vol. 4, 241 (1949).
Chemical Abstracts, vol. 108, 1988, p. 49, Abstract No. 151651n for JP 62-257950.

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