| 摘要 |
<p>Disclosed is a catalyst having the formula <IMAGE> where each R is independently selected from aliphatic from C1 to C6 and aromatic from C6 to C10, each R5 is independently selected from H, R, and L', each L' is independently selected from LM'LrX3-r or two L' groups form the bridge -LM'X2-rLr-, each L is independently selected from cyclopentadienyl, indenyl, and fluorenyl, X is chlorine or bromine, M' is zirconium, titanium, or hafnium, n is 5 to 500, the ratio of R to H+L in R5 is 0 to 100, the ratio of H to L' in R5 is 0 to 4, and r is 0 or 1.</p> |
