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US 2021/0079166 A1Published application
Polyarylene sulfide and a preparation method thereof
AssigneeSK Chemicals Co., Ltd.
InventorsSe-Ho LEE, Sung-Gi KIM
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Abstract
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 (—COON) or amine group (—NH2).
Claims9
1-19. (canceled)
A method of preparing a polyarylene sulfide, including:
- melt-polymerizing a reactant including a diiodoaromatic compound and elemental sulfur;
- and
- adding a compound having carboxyl group while carrying out the melt-polymerization,
- wherein the compound having carboxyl group is added thereto when the degree of the polymerization reaction is progressed 90% or more, wherein the degree of polymerization reaction is determined by the ratio of present viscosity to target viscosity.
1 more element
Dependencies are inferred from the claim text.