异戊二烯聚合催化体系Ln(naph) <sub>3</sub>-Al(i-C <sub>4</sub>H <sub>9</sub>) <sub>3</sub>-Al <sub>2</sub>(C <sub>2</sub>H <sub>5</sub>) <sub>3</sub>Cl <sub>3</sub>中稀土金属离子的价态

THE VALENCE STATE OF RARE EARTH METAL IONS IN THE CATALYST SYSTEM Ln(naph) ₃-Al(i-C ₄H ₉) ₃-Al ₂(C ₂H ₅) ₃Cl ₃ FOR POLYMERIZATION OF ISOPRENE

WANG FO-SONG, ZHAO XIAO-JIANG, JIANG CHENG-DE, GONG ZHI

Acta Chimica Sinica . 1979, (2): 111 -118 .