公开(公告)号：US11634559B2

公开(公告)日：2023-04-25

申请号：US17793528

申请日：2021-01-08

Applicant: ADEKA CORPORATION

Inventor： Ryo Yokoyama ,  Hiroki Nishi

IPC: C08K5/527 ,  C08K3/34 ,  B29C48/40 ,  B29C48/47 ,  B29C48/50

Abstract: A method for producing a resin composition of the present invention is a method for producing a resin composition, the method including a step of obtaining a resin composition by heating and melt-kneading a mixture containing a particulate nucleating agent in which D50 is equal to or more than 0.1 μm and equal to or less than 300 μm and a thermoplastic resin using a twin screw extruder (100) including, inside a cylinder (10), a screw (50) having kneading discs (60), in which the step of obtaining a resin composition includes an extrusion step of extruding the mixture supplied into the twin screw extruder (100) in an ejection direction under kneading conditions in which X and Y satisfy 4.0≤X in a range of 6.0×103≤Y≤7.0×104 when a volume-based ejection amount is denoted by X (10−6·kg·h−1·mm−3), and a strain rate is denoted by Y (min−1).