Polyarylene sulfide and preparation method thereof

摘要

This disclosure relates to polyarylene sulfide that may exhibit and maintain excellent properties and a method for preparing the same, wherein the polyarylene sulfide is in the form of pellet of 2 to 10 mm size immediately after melt polymerization, and has residual solvent content of 300 ppm or less, based on the total weight of resin.;The polyarylene sulfide may exhibit and maintain excellent properties, particularly it does not generate foam in the product or stain on the surface, has excellent mechanical properties such as tensile strength, and the like, and thus, it may be usefully applied in the industrial field of preparing polyarylene sulfide and manufacturing a molded product using the same.

主权项

1. Polyarylene sulfide that is in the form of a pellet of 2 to 10 mm size immediately after polymerization, and has residual solvent content of 300 ppm or less, based on the total weight of the resin;
wherein the polyarylene sulfide is produced by a method comprising polymerizing a diiodide aromatic compound and an initial amount of a sulfur compound; adding an additional amount of sulfur compound at a point after the addition of the initial amount of a sulfur compound; and drying the resulting polyarylene sulfide at 120 to 160° C. for 1 to 2 hours to give polyarylene sulfide in the form of a pellet of 2 to 10 mm size immediately after polymerization, and has residual solvent content of 300 ppm or less, based on the total weight of the resin.