METHOD FOR PRODUCING THERMOPLASTIC RESIN COMPOSITION

• Main Authors: ISHITAKE KENJI, UTAZAKI KENICHI, MASUNAGA ATSUSHI
• Format: Patent
• Language: English; Japanese
• Published: 09.07.2020
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

To provide a thermoplastic resin composition which is excellent in flowability, heat resistance and mechanical characteristics, and furthermore is excellent in heat resistance and mechanical characteristics after retained in melted condition.SOLUTION: A method for producing a thermoplastic resin composition is provided in which cyclic polyarylene sulfide (A) having a weight average molecular weight of 5,000 or less and a thermoplastic resin (B) other than the polyarylene sulfide is heated in the presence of an anion polymerization initiator (C) having a sulfide group, wherein (A) is contained in an amount of 1 pts.mass or more and 67 pts.mass or less and (C) is contained in an amount of 0.01 pts.mass or more and 10 pts.mass or less with respect to 100 pts.mass of (B), and the obtained thermoplastic resin composition has a single glass transition temperature.SELECTED DRAWING: None 【課題】流動性、耐熱性および機械特性に優れ、さらに溶融滞留後の耐熱性、機械特性にも優れる熱可塑性樹脂組成物を提供すること。【解決手段】（Ａ）重量平均分子量が５０００以下の環状ポリアリーレンスルフィド、および（Ｂ）ポリアリーレンスルフィド以外の熱可塑性樹脂を、（Ｃ）スルフィド基を有するアニオン重合開始剤存在下にて加熱する熱可塑性樹脂組成物の製造方法であって、前記（Ｂ）１００質量部に対し、前記（Ａ）が１質量部以上６７質量部以下、前記（Ｃ）が０．０１質量部以上１０質量部以下であり、得られる熱可塑性樹脂組成物のガラス転移温度が単一である、熱可塑性樹脂組成物の製造方法。【選択図】なし