| 摘要 |
PURPOSE: A linear low-density polyethylene resin is provided to have low heat sealing initiating temperature, and high hot tact strength, and to provide a polymer film suitable for high speed heat sealing. CONSTITUTION: A linear low-density polyethylene resin is manufactured by copolymerization of ethylene andα-olefin by using crosslinkable bisindenyl based component comprising a metallocene catalyst in a gas-phase reactor. A composition distribution breadth index of the linear low density polyethylene resin is 80% or more, has two melt peaks, and has difference between two melting peak is 5°C or more. In the copolymerization of ethylene andα-olefin, as a catalyst activator, one or more kinds of alkylaluminum selected from a trimethyl aluminum, triethylaluminum, tripropyl aluminum, triiosbutyl aluminum, tributylaluminum, trihexyl aluminum, and trioctyl aluminum as a catalyst activator. |
