| abstract |
A method of producing a liquid crystal polyester composition, the twin-screw extruder including a cylinder having a supply port for supplying the liquid crystal polyester, a first addition port for adding the filler other than fibrous fillers and a second addition port for adding a fibrous filler which are provided downstream of the supply port, and a screw provided with kneading portions on the upstream side and downstream side of the first addition port, a resin temperature (T1) of the liquid crystal polyester after kneading in the nearest upstream kneading portion satisfying formula (1), and a resin temperature (T2) of the liquid crystal polyester after kneading in the nearest downstream kneading portion satisfying formula (2): FT-100 ( DEG C ) ≤ T1 ≤ FT+20 ( DEG C )...(1) FT-100 ( DEG C ) ≤ T2 ≤ FT+30 ( DEG C )...(2) wherein FT represents the flow starting temperature of the liquid crystal polyester. |