Method for preparing polyarylene sulfide having reduced iodine content

Abstract

This disclosure relates to a method for preparing polyarylene sulfide having reduced iodine content while having excellent thermal stability, specifically to a method comprising polymerization reacting a composition comprising diiodide aromatic compounds, sulfur compounds, and a polymerization terminator. The preparation method may effectively reduce iodine content of polyarylene sulfide to prevent corrosion of post processing equipment, improve properties of polyarylene sulfide such as thermal stability, and the like, and thus, it may be usefully applied in the industrial field relating to preparation of polyarylene sulfide.

1 - 17 . (canceled) 
     
     
         18 . Polyarylene sulfide prepared by a method comprising polymerization reacting reactants comprising diiodide aromatic compounds, sulfur, and a polymerization terminator of the following Chemical Formula 1,
 wherein the polyarylene sulfide has iodine content of 20,000 ppm or less:   
       
         
           
           
               
               
           
         
         in the Chemical Formula 1, X is a chemical bond, O, S, N, carbonyl, or methylene, and R 1  to R 10  are independently hydrogen, a hydroxyl, a C1-5 alkyl group, or a phenyl group. 
       
     
     
         19 . The polyarylene sulfide according to claim  1 , wherein the polyarylene sulfide has iodine content of 10,000 ppm or less. 
     
     
         20 . The polyarylene sulfide according to claim  1 , wherein the polyarylene sulfide has a melting point of 265 to 320° C. 
     
     
         21 . The polyarylene sulfide according to claim  1 , wherein the polyarylene sulfide has a melt viscosity of 20 to 40,000 Poise.