Polyarylene sulfide having excellent processability and preparation method thereof

摘要

The present invention relates to polyarylene sulfide, in which a ratio of a peak area of a polymer chain of a second polyarylene sulfide having a lower molecular weight than the maximum peak molecular weight to a peak area of a polymer chain of a first polyarylene sulfide having a higher molecular weight than the maximum peak molecular weight is 1.3 or less in the molecular weight distribution of the polyarylene sulfide, as measured by gel permeation chromatography using polystyrene as a standard, and a preparation method thereof. This polyarylene sulfide exhibits excellent processability and generates no burrs (flashes) or the like, and can satisfactorily mold a product requiring high molding precision.

主权项

1. A polyarylene sulfide comprising a polymer chain of a first polyarylene sulfide having a higher molecular weight than the maximum peak molecular weight and a polymer chain of a second polyarylene sulfide having a lower molecular weight than the maximum peak molecular weight, as measured by gel permeation chromatography using polystyrene as a standard,
wherein a ratio of a peak area of the polymer chain of the second polyarylene sulfide to a peak area of the polymer chain of the first polyarylene sulfide is 1.3 or less, and the number average molecular weight of the polyarylene sulfide is 3,000 to 100,000, and the maximum peak molecular weight is 12,000 to 60,000.