Arylene sulfide polymer, contacted with polyhaloaromatic compoun

Details Arylene sulfide polymer, contacted with polyhaloaromatic compoun Arylene sulfide polymer, contacted with polyhaloaromatic compoun

1986-10-27

1988-04-26

Anderson, Harold D.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

528388, C08G 7514

Patent

active

047405694

ABSTRACT:
A process for the production and use of branched polymers of arylene sulfide in which (A) a reaction mixture of (1) at least one p-dihalo-benzene, (2) at least one alkali metal sulfide, (3) at least one organic amide, (4) water in an amount of about 1.0 mole to about 2.4 moles per mole of alkali metal sulfide, and (5) at least one alkali metal carboxylate is contacted under polymerization conditions for a time sufficient to form arylene sulfide polymer and the arylene sulfide polymer formed in said reaction mixture is contacted under polymerization conditions with a polyhaloaromatic compound having more than two halogen substituents per molecule for a time having a range of up to about 75 minutes before entering upon termination of the polymerization process, (B) the reaction mixture is contacted with carbon dioxide, (C) volatiles are removed from the reaction mixture, (D) arylene sulfide polymer is recovered from the reaction mixture, (E) the recovered polymer is washed, and (F) the polymer is further processed, as by molding, extruding into film or sheet, or used as a coating. An embodiment of the process in which the alkali metal sulfide is produced in situ by the reaction of an excess of alkali metal hydroxide with alkali metal hydrosulfide. An embodiment in which carbon dioxide is contacted with arylene sulfide polymer formed in the reaction mixture to stabilize the polymer. A molded object, a film, a sheet, or a coating composition that is the product of the reaction and work-up process above.

REFERENCES:
patent: 4282347 (1981-08-01), Tieszen et al.
patent: 4350810 (1982-09-01), Tieszen et al.
patent: 4656231 (1987-04-01), Tieszen et al.

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