ETHYLENE IONOMER FOR TUBES AND MOLDING THEREOF

• Main Authors: HIRAMOTO TOMOKI, UEMATSU MASAHIRO
• Format: Patent
• Language: English; Japanese
• Published: 28.01.2021
• Subjects: BLASTING; CHEMISTRY; COMPOSITIONS BASED THEREON; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; JOINTS OR FITTINGS FOR PIPES; LIGHTING; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THEIR PREPARATION OR CHEMICAL WORKING-UP; THERMAL INSULATION IN GENERAL; WEAPONS

To provide an ethylene ionomer for tubes that achieves a good balance of flexibility, wear resistance, and transparency and a molding thereof.SOLUTION: An ethylene ionomer for tubes contains an ionomer in which a phase angle δ in an absolute value G*=0.1 MPa of a complex elastic modulus measured with a rotary rheometer is 50-75 degrees and which is substantially linear. In the ionomer, a melt flow rate (MFR) at temperature 190°C and load 2.16 kg is 0.1-15 g/10 min; a tensile elasticity is 20-350 MPa; an amount of wear in a wear test is less than 10 mg; and a haze is 0.1-30%.SELECTED DRAWING: None 【課題】 柔軟性、耐摩耗性、透明性のバランスに優れるチューブ用エチレン系アイオノマー及びその成形体を提供する【解決手段】 回転式レオメータで測定した複素弾性率の絶対値Ｇ＊＝０．１ＭＰａにおける位相角δが、５０〜７５度であり実質的に直鎖状であるアイオノマーであって；温度１９０℃、荷重２．１６ｋｇにおけるメルトフローレート（ＭＦＲ）が０．１〜１５ｇ／１０分であり；引張弾性率が２０〜３５０ＭＰaであり；摩耗試験における摩耗量が１０ｍｇ未満であり；そして、ヘイズが０．１〜３０％である、アイオノマーを含有することを特徴とする、チューブ用エチレン系アイオノマーである。【選択図】 なし