| Abstract: | Monomer-isomerization polymerization of cis-2-butene with four types of TiCl3 in combination with alkylaluminum compounds was investigated. The catalytic activities for monomer-isomerization polymerization were found to be influenced by the type of TiCl3 employed: systems containing hydrogen-activated-TiCl3 and Solvay-TiCl3 in combination with R3Al (R = C2H5 and i-C4H9) showed high catalytic activity for both isomerization and polymerization, whereas (C2H5)2AlCl in combination with any type of TiCl3 did not induce the monomer-isomerization polymerization. The addition effect of NiCl2 to the TiCl3? (C2H5)3Al catalyst was examined. Catalytic activities for both polymerization and isomerization reactions were found to depend on the amount of NiCl2 added. |
