A heterophasic propylene ethylene copolymer composition having an MFR.sub.2 in the range from 1.0 to 55.0 g/10 min and a melting temperature in the range from 155 to 162° C., comprising: i) from 60 to 88 wt.-% of a xylene cold insoluble fraction (XCI) having an intrinsic viscosity iV(XCI) in the range from 1.40 to 2.50 dl/g, an isotactic pentad concentration [mmmm] of more than 97.0% and a content of 2,1-regiodefects in the range from 0.1 to 0.4 mol %, ii) from 12 to 40 wt.-% of a xylene cold soluble fraction (XCS) having an intrinsic viscosity iV(XCS) in the range from 1.80 to 3.20 dl/g and an ethylene content C2(XCS) in the range from 25 to 80 wt.-%, wherein the ratio of the intrinsic viscosities of the two fractions, iV(XCS)/iV(XCI), is in the range from 1.0 to 2.0.

A heterophasic propylene ethylene copolymer composition having an MFR.sub.2 in the range from 1.0 to 55.0 g/10 min and a melting temperature in the range from 155 to 162° C., comprising: i) from 60 to 88 wt.-% of a xylene cold insoluble fraction (XCI) having an intrinsic viscosity iV(XCI) in the range from 1.40 to 2.50 dl/g, an isotactic pentad concentration [mmmm] of more than 97.0% and a content of 2,1-regiodefects in the range from 0.1 to 0.4 mol %, ii) from 12 to 40 wt.-% of a xylene cold soluble fraction (XCS) having an intrinsic viscosity iV(XCS) in the range from 1.80 to 3.20 dl/g and an ethylene content C2(XCS) in the range from 25 to 80 wt.-%, wherein the ratio of the intrinsic viscosities of the two fractions, iV(XCS)/iV(XCI), is in the range from 1.0 to 2.0.

The present invention relates to heterophasic polypropylene compositions comprising a propylene homo- or copolymer forming a crystalline fraction as a matrix and an amorphous propylene ethylene elastomer as a soluble fraction dispersed in said matrix. The heterophasic polypropylene compositions further comprise an elastomeric ethylene/alpha-olefin random copolymer. The heterophasic polypropylene compositions have a well-balanced relation between stiffness and impact strength, low volatile and semi-volatile emissions and good processability.

The present invention relates to heterophasic polypropylene compositions comprising a propylene homo- or copolymer forming a crystalline fraction as a matrix and an amorphous propylene ethylene elastomer as a soluble fraction dispersed in said matrix. The heterophasic polypropylene compositions further comprise an elastomeric ethylene/alpha-olefin random copolymer. The heterophasic polypropylene compositions have a well-balanced relation between stiffness and impact strength, low volatile and semi-volatile emissions and good processability.

Disclosed is a polypropylene with an MFR of at least 20 g/10 min comprising a homopolypropylene and within a range from 2 wt % to 20 wt % of a propylene-α-olefin copolymer by weight of the polypropylene, where the homopolypropylene has a MFR within a range from 30 g/10 min to 200 g/10 min, where the propylene-α-olefin copolymer comprises within a range from 30 wt % to 50 wt % α-olefin derived units by weight of the propylene-α-olefin copolymer, and has an IV within a range from 4 to 9 dL/g. The polypropylene may be obtained by combining a Ziegler-Natta catalyst having two transition metals with propylene in reactors in series to produce the homopolypropylene followed by a gas phase reactor to produce a propylene-α-olefin copolymer blended with the homopolypropylene.

Sole structures including a plate including a first polyolefin resin, and an edge portion comprising a second resin are disclosed herein. The edge portion is more flexible or less rigid than the plate. Articles of footwear formed from the sole structures are also provided. Methods of making the polyolefin resin compositions, plates, edge portions, sole structures, and articles of footwear are also provided. In some aspects, the first polyolefin resin composition includes an effective amount of a polymeric resin modifier.

A propylene/1-hexene copolymer having i) the content of 1-hexene derived units, measured by C.sup.13-NMR, ranging from 1.5 wt % to 2.5 wt % and the content of propylene derived units ranging from 97.5 to 98.5 wt. %; ii) a melting temperature, measured by DSC, ranging from 148 to 153° C.; iii) an amount of fraction insoluble in xylene at 25° C. higher than 97.0%; and iv) a melt flow rate (MFR), measured according to ISO 1133, 230° C., 2.16 kg, ranging from 35 to 65 g/10 min.

A propylene/1-hexene copolymer having i) the content of 1-hexene derived units, measured by C.sup.13-NMR, ranging from 1.5 wt % to 2.5 wt % and the content of propylene derived units ranging from 97.5 to 98.5 wt. %; ii) a melting temperature, measured by DSC, ranging from 148 to 153° C.; iii) an amount of fraction insoluble in xylene at 25° C. higher than 97.0%; and iv) a melt flow rate (MFR), measured according to ISO 1133, 230° C., 2.16 kg, ranging from 35 to 65 g/10 min.

The present invention provides a heterophasic polypropylene composition with good response to nucleating agents, increased crystallisation temperature, good mechanical properties The present invention further relates to articles made thereof, and the use of the heterophasic polypropylene composition for specific applications and producing these.

The present invention provides a heterophasic polypropylene composition with good response to nucleating agents, increased crystallisation temperature, good mechanical properties The present invention further relates to articles made thereof, and the use of the heterophasic polypropylene composition for specific applications and producing these.