Phillips Petroleum Company

Wei-Teh W Shang

Lacey E Scoggins

Guy Senatore

Kenneth D Goetz

Carlton Edwin Ash

Jon F Geibel

Darryl R Fahey

Owen H Decker

Afif M Nesheiwat

Fernando C Vidaurri

Jimmie J Straw

Harvey D Hensley

Paul J Deslauriers

John D Stuber

A process is provided for producing a poly(arylene sulfide) polymer which employs at least one base as a reactant, wherein the base is contacted with the polymerization reaction mixture incrementally during the polymerization.

Process for preparing poly(arylene sulfide) polymers

A method is provided for producing a poly(arylene sulfide) polymer having reduced amounts of impurities by contacting a poly(arylene sulfide) polymerization reaction mixture with an acid.

Acid treatment of poly(arylene sulfide) polymer reaction mixture

Arylene sulfide polymers which can be linear, branched or modified are prepared by a process which comprises the steps of: (a) admixing a sulfur source and a cyclic organic amide in the presence of water to form an aqueous admixture wherein the molar ratio of the sulfur source to the cyclic organic amide is at least about 0.6:1 to about 1:1; (b) dehydrating said aqueous admixture to form a dehydrated admixture; (c) admixing with said dehydrated admixture at least one polymerizable halo-substituted aromatic compound to form a polymerization mixture; (d) subjecting the polymerization mixture to polymerization conditions effective to produce the arylene sulfide polymer; and (3) recovering the arylene sulfide polymer.

Preparation of poly arylene sulfide with specified ratio of sulfur

Arylene sulfide polymer having a high extrusion rate, e.g. at least about 100 g/10 min. are prepared by a process comprising: (a) dehydrating an aqueous admixture of a suitable sulfur source and a cyclic organic amide; (b) admixing a dihalo-substituted aromatic compound with the dehydrate mixture to form a polymerization mixture wherein the molar ratio of sulfur source to the cyclic organic amide is about 0.39:1 to about 0.6:1; (c) subjecting the polymerization mixture to reaction conditions sufficient to produce the arylene sulfide polymer; and (d) recovering the arylene sulfide polymer.

Arylene sulfide polymer preparation from dehydrated admixture comprising

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Bartlesville, OK, United States of America

Wei-Teh W Shang