Process for making ethylene polymer blends with controlled long-chain branching

摘要: A high-temperature solution process for making an ethylene polymer blend having a controlled degree of long-chain branching is disclosed. Ethylene polymerized in the presence first Ziegler-Natta catalyst comprising titanium, magnesium, and aluminum absence hydrogen to produce component substantial branching. second little or no also prepared. Both polymerizations are performed at temperature from 140° C. 250° The components combined give blend. by adjusting relative amounts components. invention enables preparation valuable products pre-determined using readily available Zeigler-Natta catalysts, commercially practiced techniques, conventional equipment.