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US 4,544,735 AGranted
Preparation of poly(arylene sulfide) from halothiophenol and alkaline metal hydroxide
AssigneePhillips Petroleum Company
InventorsJon F. Geibel, Michael D. Cliffton, Timothy P. Murtha
Life of this patent
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Abstract
A method for producing poly(arylene sulfide) of high molecular weight by subjecting to polymerization conditions a reaction mixture of alkaline metal hydroxide, halothiophenol and organic amide with a molar ratio of alkaline metal hydroxide to halothiophenol in a range of about 1.6 to about 3.2.
Claims5
A method for producing high molecular weight poly(arylene sulfide) comprising:
- (a) contacting alkali metal hydroxide, organic amide, and halothiophenol to form a reaction mixture, said halothiophenol represented by the formula XRSH, where R is a divalent hydrocarbon radical selected from arylene, alkyl-substituted arylene, cycloalkyl-substituted arylene, or aryl-substituted arylene, the number of carbon atoms in said R group being within the range of 6 to about 20 and X being a halogen selected from fluorine, chlorine, bromine, or iodine, said alkali metal hydroxide and halothiophenol present in a molar ratio of about 1.6 to about 3.2 alkali metal hydroxide to halothiophenol, and
- (b) maintaining at least a portion of said reaction mixture at polymerization conditions to produce a polymer.
Dependencies are inferred from the claim text.