Back to results
US 2026/0176461 A1Published application
Recycled polyarylene sulfide resin composition and production method thereof
AssigneeTosoh Corporation
InventorHiroki INOUE
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeTosoh Corporation
InventorHiroki INOUE
Estimating the term…
Provided are a fibrous filler-reinforced recycled polyarylene sulfide resin composition that contains a recycled polyarylene sulfide resin, without affecting the inherent heat resistance, chemical resistance and fluidity of a polyarylene sulfide resin, and a production method thereof. The fibrous filler-reinforced recycled polyarylene sulfide resin composition contains a polyarylene sulfide resin (A), a recycled polyarylene sulfide resin (B) and a fibrous filler (C), the polyarylene sulfide resin (A) having a melt viscosity of 100 to 3000 poises, the amount of the recycled polyarylene sulfide resin (B) contained being 10 to 250 parts by weight per 100 parts by weight of the polyarylene sulfide resin (A), and the amount of the fibrous filler (C) contained being 10 to 60 parts by weight per 100 parts by weight in total of the polyarylene sulfide resin (A) and the recycled polyarylene sulfide resin (B).
A fibrous filler-reinforced recycled polyarylene sulfide resin composition comprising a polyarylene sulfide resin (A), a recycled polyarylene sulfide resin (B) and a fibrous filler (C),
A method for producing a fibrous filler-reinforced recycled polyarylene sulfide resin composition, comprising melt-kneading in and extruding from, a twin-screw extruder having screws with a ratio (L1/D1) of screw length (L1) to screw diameter (D1) of 30 or greater and two or more kneading zones, a polyarylene sulfide resin (A), a recycled polyarylene sulfide resin (B) and a fibrous filler (C) under kneading conditions of a kneading-zone cylinder temperature of 280 to 330° C., a screw circumferential speed of 50 to 400 mm/second and a dwell time of 30 to 100 seconds, the polyarylene sulfide resin (A) having a melt viscosity of 100 to 3000 poises as measured under conditions of a measurement temperature of 315° C. and a load of 10 kg by a capillary rheometer flow tester equipped with a die of 1 mm in diameter and 2 mm in length.
Dependencies are inferred from the claim text.