Polyarylene sulfide and a preparation method thereof

Abstract

[SUMMARY] The present invention relates to a polyarylene sulfide having more improved miscibility with other polymer materials or fillers, and a method of preparing the same. At least part of end groups of the main chain of the polyarylene sulfide is carboxyl group (—COOH) or amine group (—NH 2 ).

1 . A polyarylene sulfide comprising carboxyl group (—COOH) or amine group (—NH 2 ), iodo group and aryl group, as an end group of the main chain of the polyarylene sulfide. 
     
     
         2 . The polyarylene sulfide according to  claim 1 , showing the peak of 1600 to 1800 cm −1  or 3300 to 3500 cm −1 , in a FT-IR spectrum. 
     
     
         3 . The polyarylene sulfide according to  claim 2 , wherein the relative height intensity of the peak of 1600 to 1800 cm −1  or 3300 to 3500 cm −1  is 0.001 to 10%, when the height of the ring stretch peak shown at 1400 to 1600 cm −1  is assumed as the intensity of 100%, in the FT-IR spectrum. 
     
     
         4 . The polyarylene sulfide according to  claim 1 , wherein the melting temperature is 265 to 290° C. 
     
     
         5 . The polyarylene sulfide according to  claim 1 , wherein the number average molecular weight is 5,000 to 50,000. 
     
     
         6 . The polyarylene sulfide according to  claim 1 , wherein the melt viscosity measured with a rotational viscometer at 300° C. is 10 to 50,000 poise. 
     
     
         7 . The polyarylene sulfide according to  claim 1 , wherein the tensile strength measured according to ASTM D 638 is 100 to 900 kgf/cm 2 . 
     
     
         8 . The polyarylene sulfide according to  claim 1 , wherein the elongation measured according to ASTM D 638 is 1 to 10%. 
     
     
         9 . The polyarylene sulfide according to  claim 1 , wherein the flexural strength measured according to ASTM D 790 is 100 to 2,000 kgf/cm 2 . 
     
     
         10 . The polyarylene sulfide according to  claim 1 , wherein the impact strength measured according to ASTM D 256 is 1 to 100 J/m. 
     
     
         11 - 19 . (canceled) 
     
     
         20 . The polyarylene sulfide according to  claim 1 , the polyarylene sulfide does not comprise halogen group other than the iodo group, as the end group of the main chain. 
     
     
         21 . The polyarylene sulfide according to  claim 1 , the aryl group, as the end group of the main chain, is an unsubstituted aryl group. 
     
     
         22 . The polyarylene sulfide according to  claim 22 , the unsubstituted aryl group, as the end group of the main chain, is a phenyl group.