Polyarylene sulfide resin
AssigneeIdemitsu Kosan Co., Ltd.
InventorsMasaya Okamoto, Minoru Senga, Koichi Suga, Kenji Seki
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Abstract
Provided are a polyarylene sulfide resin and its composition of which the moldings are burred little and which has good mechanical properties and good flow moldability. The composition comprises from 20 to 90% by weight of a polyarylene sulfide and from 10 to 80% by weight of an inorganic filler, and is characterized in that its burrs are on the level of at most 120 μm, that it has a weld strength of at least 50 MPa and that the length of its spiral flow having a thickness of 1 mm is at least 100 mm. Preferably, the polyarylene sulfide to be in the composition has a specific index to the degree of branching and a specific flexural strength.
Claims4
A polyarylene sulfide resin which satisfies the following formulae (1) to (4):
- N≧0.3×log10(ηm)+0.5 (1)N≧1.10 (2)F≧57×log10(ηm)−60 (3)F≧40 (4)
- wherein N indicates an index to the degree of branching of the polyarylene sulfide, ηm indicates the melt viscosity (unit:
- Pa·s) of the polyarylene sulfide, and F indicates the flexural strength (unit:
- MPa) of the polyarylene sulfide.
Dependencies are inferred from the claim text.