高分岐エチレンオリゴマーのガス相における制御されたチェーンウォーキングエチレンオリゴメリゼーション
Jun Gan1, Dong-Yang Zhang1, Shengyu Dai1
1Anhui Laboratory of Molecule-Based Materials, Key Laboratory of Functional Molecular Solids, Ministry of Education, School of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China. daiyu@ustc.edu.cn.
まとめ
この研究では,新しいパラジウム触媒を用いた低分子重度の高分岐エチレンオリゴマーのガス相合成が報告されています. これらのオリゴーマーには,低粘度潤滑基の用途に適した特性があります.
科学分野:
- ポリマー化学
- カタリシス
- 材料科学
背景:
- ガス相ポリメリゼーションは通常,高分子量ポリオレフィンを生成する.
- 低分子量ハイパーブランクエチレンオリゴマーの合成は,ガス相法でほとんど報告されていません.
研究 の 目的:
- ガス相ポリメリゼーションを用いた低分子量ハイパーブランチドエチレンオリゴマーの製造方法の開発.
- エチレンオリゴメリゼーションのための新しいパラジウム触媒の触媒活性と安定性を調査する.
主な方法:
- ガス相エチレンオリゴメリゼーションのための柔軟なボリュームのイミノピリジルPd (II) 触媒を使用した.
- 13C NMRスペクトル検査と粘度測定を用いて,得られた高分岐エチレンオリゴーマーを特徴づけました.
主要な成果:
- ガス相触媒による高分岐エチレンオリゴマーの合成を達成した.
- 触媒は溶液ポリメリゼーションに匹敵する高い活性と安定性を示した.
- 分岐密度が低く,分子重量が高いオリゴーマーを生産した.
- オリゴマーは低粘度潤滑基材の適用基準を満たしている.
結論:
- 柔軟なボリュームのイミノピリジルPd (II) 触媒は,高分岐エチレンオリゴマーのガス相生成に有効である.
- 合成されたオリゴーマーには,低粘度潤滑剤として使用するための望ましい特性があります.
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