| 摘要 |
<p>Aromatic sulfide/sulfone polymers of increased molecular weight are produced by contacting a dihalo aromatic sulfone, at least partially hydrated alkali metal sulfide, and an organic amide under polymerization conditions which produce a higher molecular weight aromatic sulfide/sulfone polymer. The use of at least one at least partially hydrated alkali metal sulfide other than lithium sulfide results in polymers of increased molecular weight having utility as coatings, films, molded objects, filaments, fibers, and the like.</p> |
