| abstract |
The present invention is a polyolefin composition obtained by mixing two types of polyolefins prepared using a metallocene-supported catalyst on which one metallocene catalyst compound containing a metallocene compound represented by the following Chemical Formula 1 or Chemical Formula 2 is supported. In particular, the polyolefin composition exhibits improved environmental stress cracking resistance (ESCR). [Formula 1] [Formula 2] In Formulas 1 and 2 above, The definitions of M 1 , M 2 , X 1 , X 2 , n, Ar 1 , Ar 2 , Ar 3 , Ar 4 , B, L and m are the same as described in the detailed description of the invention, Each α1 formed by Ar 1 -M 1 -Ar 2 and each α2 formed by Ar 3 -M 2 -Ar 4 are selected within 100° to 135°, respectively. |