Multi layer process for producing arylene sulfide polymers

Details Multi layer process for producing arylene sulfide polymers Multi layer process for producing arylene sulfide polymers

1988-06-27

1990-10-02

Anderson, Harold D.

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

Synthetic resins

From sulfur-containing reactant

525537, C08G 7516

Patent

active

049608614

ABSTRACT:
A process for producing a polyarylene sulfide polymer, which comprises reacting a polyhaloaromatic compound and a sulfidizing agent in a polar amide solvent in the presence of at least one polymerization additive to form a resinuous liquid consisting of a layer (I) containing a major amount of a polymer having a relatively high molecular weight and a minor amount of a polymer having a relatively low molecular weight and a layer (II) containing a major amount of a polymer having a relatively low molecular weight and a minor amount of a polymer having a relatively high molecular weight, and thereafter fractionating the layer (I) or layer (II) from the resinous liquid.

REFERENCES:
patent: 4038260 (1977-07-01), Campbell
patent: 4038262 (1977-07-01), Edmonds
patent: 4038263 (1977-07-01), Edmonds et al.
patent: 4282347 (1981-08-01), Tieszen et al.
patent: 4303781 (1981-12-01), Idel et al.
patent: 4350810 (1982-09-01), Tieszen et al.
patent: 4373090 (1983-02-01), Edmonds
patent: 4405767 (1983-09-01), Beever et al.

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