Polyarylene sulfide resin with excellent luminosity and preparation method thereof

A process of a polyarylene sulfide comprising the steps of:

• a) melting and mixing a composition comprising 100 part by weight of solid sulfur, 500 to 10,000 parts by weight of iodinated aryl compounds, and 0.03 to 30 parts by weight of a sulfur-containing polymerization terminator with respect to 100 parts by weight of the solid sulfur;
• and
• b) polymerizing the molten mixture of step a) for 1 to 30 hours while increasing the temperature and decreasing the pressure from initial reaction conditions of a temperature 180 to 250° C. and a pressure 50 to 450 Torr to final reaction conditions of a temperature 270 to 350° C. and a pressure 0.001 to 20 Torr,
• wherein the sulfur-containing polymerization terminator is at least one selected from the group consisting of 2,2′-dithiobisbenzothiazole, benzothiazolesulfenamide, and dithiocarbamate.