Corrosion-resistant material for sulfur-containing alkali...

Details Corrosion-resistant material for sulfur-containing alkali... Corrosion-resistant material for sulfur-containing alkali...

C - Chemistry, Metallurgy

08

G

402/344, 23/378,

C08G 75/02 (2006.01) B01J 19/02 (2006.01) C22C 27/06 (2006.01)

Patent

CA 2039916

ABSTRACT OF THE DISCLOSURE A corrosion-resistant material against sulfur-containing alkali metal salt which comprises high purity metallic chromium having a relative density of 95% or higher and a purity of 99.7% or higher and equipment for production of polyarylene sulfides which is composed of such a corrosion-resistant material, and a polyarylene sulfide containing substantially no heavy metal and a process for producing such a polyarylene sulfide comprising reacting an alkali metal sulfide and a dihalogenated aromatic compound in a polar aprotic solvent by using equipment made of high purity chromium having a purity of 99.7% or higher and having a relative density of 95% or higher at least at parts in contact with a liquid are disclosed. - 34 -

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