HU Jinmin, LIN Shaoquan, WANG Haihua. STUDIES ON STRUCTURE AND CHARACTERISTICS OF ETHYLENE/1-BUTENE COPOLYMERS PREPARED BY Co DIIMINE COMPLEX-TiCl4 CATALYSTS[J]. Acta Polymerica Sinica, 2001,(4):437-440.
HU Jinmin, LIN Shaoquan, WANG Haihua. STUDIES ON STRUCTURE AND CHARACTERISTICS OF ETHYLENE/1-BUTENE COPOLYMERS PREPARED BY Co DIIMINE COMPLEX-TiCl4 CATALYSTS[J]. Acta Polymerica Sinica, 2001,(4):437-440.DOI:
Three Co diimine complex-TiCl4 catalysts for slurry copolymerization of ethylene and 1-butene with AlR3 as cocatalyst in the absence of MAO were synthesized and were used to prepare high branching degree copolymers of ethylene with 1-butene.It is found that properties of the catalysts are affected by the characteristics of diimine ligands.the results indicate that the complex catalyst prepared with L1 ligand exhibits the property of oligomerization and copolymerization in-situ.The copolymers prepared by CL1 catalyst are plastics and elastomers
they show high branching degree (36.0~61.5 branch number/1000C) and low density (O.885~0.910 g/m3)
when the 1-butene content of feeding was below 10%
the 1-hutene content in the copolymers is higher than that of feeding.