Transparent and little colored polyarylenethioether primary melt

Details Transparent and little colored polyarylenethioether primary melt Transparent and little colored polyarylenethioether primary melt

1986-10-24

1989-01-31

Bleutge, John C.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

264 15, 264 16, 2641761, 26417717, 2642902, 26433111, 525537, 526 62, 528388, B29C 5512, B29C 4700, C08G 7514

Patent

active

048014168

ABSTRACT:
A polyarylenethioether primary melt formed article having a Hunter whiteness higher than 30% and a parallel light transmittance Tp higher than 60%, as measured for a sheet with a thickness of 0.3 mm, at the process for obtaining the article which comprises producing a polyarylenethioether according to the polymerization reaction comprising a dehalogenation/sulfidization reaction between an alkali metal sulfide and a dihaloaromatic compound in a polar organic solvent by carrying out the reaction with the addition of an effective amount of a halo-substituted organic compound to obtain a stabilized polyarylenethioether, and then subjecting the polyarylenethioether to melt extrusion. The melt formed article thus produced can be subjected to further melt processing to produce a secondary melt formed article or structure of polyarylenethioether.

REFERENCES:
patent: 4017450 (1977-04-01), Bailey
patent: 4440915 (1984-04-01), Asakura et al.
patent: 4605713 (1986-08-01), Heitz et al.
patent: 4605732 (1986-02-01), Heitz et al.
patent: 4645826 (1987-02-01), Iizuka et al.

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