Polymerization of Propylene by Silylene- and Germylene-Bridged Group 4 Metallocenes

• Published in: KOBUNSHI RONBUNSHU Vol. 59; no. 4; pp. 243 - 249
• Main Authors: YAMAZAKI, Hiroshi, KOYAMA, Mina, HATTORI, Yoshiko, NAKANO, Masato, USHIODA, Tsutomu, YAMAGUCHI, Yoshitaka, SUZUM, Noriyuki, MISE, Takaya, WAICATSUKI, Yasuo
• Format: Journal Article
• Language: Japanese
• Published: Tokyo The Society of Polymer Science, Japan 25.04.2002; Tsukiji daisan nagaoka
• Subjects: Germylene Bridge; Group 4 Metallocene; Hafnocene; Isotactic Polymerization; Polymer; Propylene; Silylene Bridge; X-ray Structure; Zirconocene

In order to compare with silylene-bridged group 4 metallocenes, C2 symmetric dimethylgermylene-bridged zirconocene and hafnocene dichlorides were prepared and employed as the catalyst for polymerization of propylene in combination with methylaluminoxane (MAO). Germylene-bridged metallocenes always p...