CPC C08L 23/142 (2013.01) [C08F 210/16 (2013.01); C08J 5/18 (2013.01); C09K 3/10 (2013.01); C08F 210/06 (2013.01); C08F 2500/12 (2013.01); C08F 2810/10 (2013.01); C08J 2323/14 (2013.01); C08J 2423/14 (2013.01); C08L 23/30 (2013.01); C08L 2203/162 (2013.01); C08L 2205/025 (2013.01); C09K 2003/1084 (2013.01); C09K 2200/0617 (2013.01)] | 16 Claims |
1. A polypropylene composition (P), comprising at least 90.0 wt-%, based on an overall weight of the polypropylene composition (P), of a copolymer (C) of propylene and 1-hexene, having
i) an overall 1-hexene content in a range of 2.0 to 10.0 wt-%,
ii) a melt flow rate MFR2 determined according to ISO 1133 (2.16 kg, 230° C.) in a range of 4.0 to 20.0 g/10 min, and
iii) an amount of 2,1 erythro regio-defects of at least 0.2 mol-%,
wherein the copolymer (C) has been visbroken with a visbreaking ratio (VR) in a range of 1.5 to 15.0, wherein the visbreaking ratio is determined according to equation (2)
wherein “MFRfinal” is the melt flow rate MFR2 determined according to ISO 1133 (230° C., 2.16 kg) of the copolymer (C) after visbreaking and “MFRstart” is the melt flow rate MFR2 determined according to ISO 1133 (230° C., 2.16 kg) of the copolymer (C) before visbreaking.
|