P-phenylene sulfide polymer preparation with dehydrated mixture of alkali metal hydroxide and excess alkali metal bisulfide

摘要

Poly(p-phenylene sulfide) is prepared by the reaction of a p- dihalobenzene such as p-dichlorobenzene, with a dehydrated admixture of an alkali metal hydroxide such as sodium hydroxide, and an alkali metal bisulfide such as sodium bisulfide, in a polar organic solvent such as N- methyl-2-pyrollidone (NMP), employing a molar ratio of alkali metal hydroxide to alkali metal bisulfide of about 0.80:1 to 0.98:1. Poly(p- phenylene sulfide) having a high extrusion rate such as about 100 to about 1000 grams/10 minutes can be prepared in this manner.