Polypropylene composition for cable insulation

4:

• The polypropylene composition according to claim 1, wherein the copolymer of propylene (A) has one or more of the following properties:
• a flexural modulus of from 130 MPa to 380 MPa, determined according to ISO 178 method A;
• and/or
• a Charpy notched impact strength at 23° C. of from 40 to 110 kJ/m2, determined according to to ISO 179-1/1eA;
• and/or
• a Charpy notched impact strength at −20° C. of from 5.0 to 10.0 kJ/m2, determined according to to ISO 179-1/1eA.

6:

• The polypropylene composition according to claim 1, wherein the ethylene polymer (B) is a high density copolymer of ethylene and comonomer units selected from alpha-olefins having from 4 to 12 carbon atoms (HDPE), having one or more, of the following properties:
• a density of from 940 to 960 kg/m3, determined according to ISO1183;
• and/or
• a melt flow rate MFR5 of from 0.05 to 1.0 g/10 min, determined according to ISO 1133 at 190° C. and 5 kg;
• and/or
• a melt flow rate MFR2 of from 0.001 to 0.5 g/10 min, determined according to ISO 1133 at 190° C. and 2.16 kg;
• and/or
• a melting temperature Tm of from 125 to 140° C., determined by differential scanning calorimetry;
• and/or
• a crystallization temperature Tc of from 100 to 125° C., determined by differential scanning calorimetry;
• and/or
• a tensile modulus of from 750 to 1250 MPa, determined according to ISO 527-1.

7:

• The polypropylene composition according to claim 1, wherein the ethylene polymer (B) is a linear low density copolymer of ethylene and comonomer units selected from alpha-olefins having from 4 to 12 carbon atoms (LLDPE), a high density copolymer of ethylene and 1-butene or a high density copolymer of ethylene and 1-hexene, having one or more, of the following properties:
• a density of from 920 to below 940 kg/m3, determined according to ISO1183;
• and/or
• a comonomer content of from 1.0 to 5.0 mol %;
• and/or
• a melt flow rate MFR5 of from 0.1 to 2.5 g/10 min, determined according to ISO 1133 at 190° C. and 5 kg;
• and/or
• a melt flow rate MFR2 of from 0.01 to 1.0 g/10 min, determined according to ISO 1133 at 190° C. and 2.16 kg;
• and/or
• a melt flow rate MFR21 of from 5 to 35 g/10 min, determined according to ISO 1133 at 190° C. and 21.6 kg;
• and/or
• a flow rate ratio FRR21/5, being the ratio of MFR21 to MFR5, of from 5 to 35;
• and/or
• a flow rate ratio FRR21/2, being the ratio of MFR21 to MFR2, of from 85 to 115;
• and/or
• a melting temperature Tm of from 120 to 135° C., determined by differential scanning calorimetry.

9:

• The polypropylene composition according to claim 1, wherein the ethylene polymer (B) is a low density polyethylene (LDPE) having one or more or all of the following properties:
• a density of from 915 to 930 kg/m3, determined according to IS01183;
• and/or
• a melt flow rate MFR5 of from 1.0 to 5.0 g/10 min, determined according to ISO 1133 at 190° C. and 5 kg;
• and/or
• a melt flow rate MFR2 of from 0.1 to 2.0 g/10 min, determined according to ISO 1133 at 190° C. and 2.16 kg;
• and/or
• a melting temperature Tm of from 95 to 125° C., determined by differential scanning calorimetry.

10:

• The polypropylene composition according to claim 1, having one or more or all of the following properties:
• a melt flow rate MFR2 of 0.5 to 2.5 g/10 min, determined according to ISO 1133 at 230° C. and 2.16 kg;
• and/or
• a melting temperature Tm of from 120 to 159° C., determined by differential scanning calorimetry;
• and/or
• a crystallization temperature Tc of from 90 to 130° C., determined by differential scanning calorimetry;
• and/or
• a difference of the melting temperature to the crystallization temperature Tm-Tc is in the range of from 2 to 65° C.;
• and/or
• a glass temperature attributed to the matrix phase Tg (matrix) in the range of from −1.0 to −17.5° C., determined by dynamic mechanical analysis;
• and/or
• a glass temperature attributed to the elastomeric phase Tg (EP) of from −40.0 to −55.0° C., determined by dynamic mechanical analysis;
• and/or
• shear thinning index SHI1/100 of from 5.0 to 20.0, determined by dynamic shear measurements;
• and/or
• a polydispersity index PI of from 1.0 to 4.5 s−1, determined by dynamic shear measurements;
• and/or
• a flexural modulus of from 175 MPa to 425 MPa, determined according to ISO 178 method A;
• and/or
• a Charpy notched impact strength at 23° C. of from 50 to 110 kJ/m2, determined according to to ISO 179-1/1eA;
• and/or
• a Charpy notched impact strength at −20° C. of from 4.5 to 25.0 kJ/m2, determined according to to ISO 179-1/1eA.