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|1. (WO2013114787) PROCESS FOR PRODUCING RESIN COMPOSITION|
|Applicants:||SUMITOMO CHEMICAL COMPANY, LIMITED
|Title:||PROCESS FOR PRODUCING RESIN COMPOSITION|
A process for producing a resin composition using an extruder which comprises a cylinder and a screw disposed inside the cylinder, the cylinder being equipped with a main feed opening and optionally with a side feed opening disposed downstream in the extrusion direction from the main feed opening. This process for producing a resin composition comprises: supplying the whole amount of a resin (A) to this extruder through the main feed opening; either supplying the whole amount of a fibrous filler (B) having a weight-average fiber length of 1 mm or longer to the extruder through the main feed opening or, in cases where the side feed opening has been disposed in this extruder, supplying some of the fibrous filler (B) to the extruder through the main feed opening and supplying the remainder to the extruder through the side feed opening; melt-kneading the supplied resin (A) together with the supplied fibrous filler (B), and extruding the kneaded molten mixture.