Basell Poliolefine Italia, S.p.a.

Masamitsu Yamauchi

Takeshi Nakajima

Anteo Pelliconi

Junichiro Washiyama

Kazuhiko Minowa

Yutaka Yokoyama

Hiroshi Takenouchi

A masterbatch composition, a polyolefin composition prepared from the masterbatch and articles prepared from the polyolefin composition. The masterbatch contains (percent by weight) from 20% to 90% of A) a crystalline polypropylene containing from 25% to 75% of a fraction A having a melt flow rate MFR of from 0.5 to 10 g/10 min., and from 75% to 25% of a fraction A having a melt flow rate MFR such that MFR /MFR is from 30 to 2000; and from 10% to 80% of B) a copolymer of ethylene and at least one C -C &agr;-olefin, the copolymer containing from 10 to 70% of ethylene, the copolymer being soluble in xylene at room temperature, and having an intrinsic viscosity &lsqb;&eegr;&rsqb; of from 4 to 9 dl/g. Articles prepared from the polyolefin composition exhibit a good balance of physical properties and reduced surface defects such as tiger striping.

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Kawasaki, Japan

Masamitsu Yamauchi