6Johnson L K, Killian C M, Brookhart M S. New Pd( Ⅱ )-and-Ni( Ⅱ ) based catalysts for polymerization of ethylene and α-olefins[J]. J Am Chem Soc, 1995,117(23):6414.
7Leaversuch R D. Metallocene resins: Is the revolution for real[J]. Modern Plastics, 1994,71 (6):48.
8Barnhart R R, San G C. Synthesis of branched polylefins using a combination of homogeneous metallocene mimics [J]. J Am Soc, 1998,120(5):1 082-1083.
9Leaversuch R D. Typical properties ofmetallocene-based polyethylenes for high clarity molding[J]. Modem plastics,1994,71(9):11.
