Process for production of poly(arylene thioether) containing pht

Details Process for production of poly(arylene thioether) containing pht Process for production of poly(arylene thioether) containing pht

1993-03-19

1996-09-10

McCamish, Marion E.

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

Synthetic resins

From sulfur-containing reactant

525537, C08G 7514

Patent

active

055547230

ABSTRACT:
A process for the production of a poly(arylene thioether) containing phthalic anhydride groups wherein a dihalogen-substituted aromatic compound is reacted with an alkali metal sulfide in a polar organic solvent containing water to produce the poly(arylene thioether) is disclosed. This process comprises causing a monohalogen-substituted phthalic compound to exist in a polymerization reaction system, and controlling a ratio, a/b of the number of moles, a of the charged dihalogen-substituted aromatic compound to the number of moles, b of the charged alkali metal sulfide within a range of 0.8<a/b<1.

REFERENCES:
patent: 4605732 (1986-08-01), Heitz et al.
patent: 4645826 (1987-02-01), Iizuka
patent: 5256763 (1993-10-01), Hoshino et al.

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