Aromatic sulfide/sulfone polymer production

Details Aromatic sulfide/sulfone polymer production Aromatic sulfide/sulfone polymer production

1980-01-29

1981-11-17

Anderson, Harold D.

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

Synthetic resins

From sulfur-containing reactant

528391, C08G 7516, C08G 7520

Patent

active

043012744

ABSTRACT:
Aromatic sulfide/sulfone polymers are prepared by initially contacting a dihaloaromatic sulfone, an alkali metal sulfide, an organic amide, and, optionally, an alkali metal carboxylate under polymerization conditions and subsequently at or near completion of the polymerization reaction, adding an end-capping agent comprising additional dihaloaromatic sulfone to the reaction mixture producing a polymer exhibiting improved physical properties including melt flow stability. The resulting polymers have utility as coatings, films, molded objects, filaments, fibers, and the like.

REFERENCES:
patent: 3790536 (1974-02-01), Vidaurri
patent: 4016145 (1977-04-01), Campbell
patent: 4125525 (1978-11-01), Campbell
patent: 4127713 (1978-11-01), Campbell

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