Abstract:
A propylene composition comprising (percent by weight): A) 60%-90%, of a crystalline propylene copolymer containing from 3.5% to 10% of ethylene derived units and having a melting temperature Tm (measured by DSC on the as-reactor polymer) ranging from 146° to 160°C; B) 10%-40%, of a copolymer of propylene containing from 15% to 30%, of ethylene derived units.
Abstract:
A propylene polymer composition comprising: a) from 35 wt% to 65 wt% of a propylene 1-hexene copolymer containing from 10.5 to 13.0% by weight, of 1-hexene derived units having a Melt Flow Rate (MFR, measured according to ASTM D 1238, 230°C/2.16 kg, i.e. at 230°C, with a load of 2.16 kg) from 3.5 to 12.0 g/10 min; b) from 35 wt% to 65 wt% of a propylene ethylene copolymer containing from 1.5 wt% to 6.wt% of ethylene derived units, a having a Melt Flow Rate (MFR, measured according to ASTM D 1238, 230°C/2.16 kg, i.e. at 230°C, with a load of 2.16 kg) from 3.5 to 12.0 g/10 min.
Abstract:
A film comprising a polypropylene composition comprising: A) from 50 wt% to 90 wt%; of a propylene homopolymer; B) from 10 wt% to 50wt%; of a copolymer of propylene with from 30.0 wt% to 70.0wt%, of ethylene derived units; the sum of the amount of component A) and B) being 100; the composition having: i) an intrinsic viscosity of the fraction soluble in xylene at 25 °C comprised between 2.2 and 4.0 dl/g; ii) a MFR L (Melt Flow Rate according to ISO 1133, condition L, i.e. 230°C and 2.16 kg load) from 0.5 to 50 g/10 min; iii) a xylene soluble fraction ranging from 20 wt% to 50 wt%; the polypropylene composition being obtained by a two steps polymerization process wherein the catalyst system contains bismuth.
Abstract:
A polyolefin composition comprising: A) from 19 wt% to 50 wt% of a propylene ethylene copolymer having an ethylene derived units content ranging from 1.5 wt% to 6.0 wt%; B) from 50 wt% to 81 wt% of a propylene ethylene 1-butene terpolymer having an ethylene derived units content ranging from 1.5 wt% and 6.0 wt% and 1-butene derived units content of between 4.8 wt% and 12.4 wt%; the sum of the amount of component A) and B) being 100; the composition being characterized by the following features: - the ratio C2wt%/C4wt% is comprised between 0.22 and 3.0, where C2wt% is the weight per cent of ethylene derived units and C4wt% is the weight per cent of 1-butene derived units; - the content of xylene soluble fraction at 25°C is comprised between 2 and 15 wt%; - molecular weight distribution (MWD), expressed in terms of Mw/Mn, greater than 4.0; recoverable compliance at 200°C having a maximum value between 800 and 1200 seconds lower than 65x10 -5 Pa -1 .
Abstract:
A propylene ethylene copolymer characterized by the following features: ethylene content of between 1.8 and 10.0% by weight; molecular weight distribution (MWD), expressed in terms of Mw/Mn, greater than 4.0; the content of xylene soluble fraction (XS) and ethylene content (C2) fulfill the following relation: XS
Abstract:
Propylene polymer compositions comprising: A) from 70 wt% to 95 wt%, of a random copolymer of propylene with ethylene, containing from 3.5 wt% to 6.5 wt% of ethylene derived units, having a content of fraction soluble in xylene at 25°C comprised between 7.1 wt% and 11.2 wt% B) from 5 wt% to 35 wt%, of a copolymer of propylene with ethylene, containing from 8.5 wt% to 17.0 wt % of ethylene derived units; the sum A+B being 100; wherein the melt flow rate, MFR(ISO 1133 (230° C, 2.16 kg) ranges from 0.6g/l0 min to 20.2 g/10 min.
Abstract:
A propylene composition comprising (percent by weight): A) 70%-95%, of a propylene homopolymer having a Polydispersity Index (P.I.) value of from 4.6 to 10, a fraction insoluble in xylene at 25 °C, higher than 90 %, and MFR L (Melt Flow Rate according to ISO 1133, condition L, i.e. 230°C and 2.16 kg load) from 60 to 120 g/10 min; B) 5%-30%, of a copolymer of propylene containing from 34.5% to 30.0% extremes included of ethylene derived units; the composition having an intrinsic viscosity of the fraction soluble in xylene at 25 °C comprised between 3 and 5 dl/g.
Abstract:
Polyolefin composition, comprising in percent by weight: 1) 75-85% of a copolymer of propylene, said copolymer containing up to 15% by weight, of ethylene and/or C 4 -C 10 α-olefin(s) and having a fraction soluble in Xilene at room temperature lower than 6% by weight, and 2) 15-25% of a copolymer of ethylene with one or more C 4 -C 10 α-olefin(s) containing from 10 to 25% by weight of said C 4 -C 10 α-olefin(s); said composition having the value of MFR, measured at 230 °C, 2.16 kg, of less than 2.5 g/10 min, the total content of ethylene of from 14 to 22 % by weight, the total content Of C 4 -C 10 α-olefin(s) of less than 4.5% by weight, the ratio of the total content of ethylene to the total content of C 4 -C 10 α-olefin(s) equal to or higher than 4, the value of the intrinsic viscosity of the total fraction soluble in xylene at room temperature equal to or less than 1.5 dl/g, and the ratio of the amount of component 2) and the amount Of C 4 -C 10 α-olefin(s) in component 2) equal to or higher than 0.80.
Abstract:
A polypropylene composition comprising 65-77 wt% of a crystalline propylene polymer, 8 to less than 13 wt% of an elastomeric copolymer and 10-23 wt% of polyethylene. The said composition exhibits a flexural modulus value higher than 1300 MPa, stress-whitening resistance values corresponding to a diameter of the whitened area of at most 1.7 cm caused by a ram falling from a 76 cm height and a diameter of the whitened area of at most 1.2 cm caused by a ram falling from a 20 cm height, and a value of Izod impact resistance at 23° C more than 14 kJ/m2 and the one at -20° C at least 5 kJ/m2.
Abstract translation:包含65-77重量%的结晶丙烯聚合物,8至小于13重量%的弹性体共聚物和10-23重量%的聚乙烯的聚丙烯组合物。 所述组合物显示高于1300MPa的弯曲模量值,对应于由高度76厘米的白垩层的直径和白色区域的白度范围 由高度为20cm的冲头引起的最大的1.2cm,23℃下的Izod耐冲击性值大于14kJ / m 2,-20℃下的抗冲击强度值至少为5kJ / m 2。
Abstract:
A heterophasic polyolefin composition comprising (percent by weight): (A) 50-0% of a crystalline propylene polymer having a polydispersity index value from 5.2 to 10 and a content of isotactic pentads (mmmm) higher than 97.5 molar%; said polymer containing at least 95% of recurring units deriving from propylene; (B) 5-20% of a first elastomeric copolymer of ethylene with at least a C 3 -C 8 α-olefin comonomer, said copolymer containing from 25 to less than 40% of ethylene, and being soluble in xylene at room temperature in an amount from higher 85 to 95 wt% the intrinsic viscosity [η] of the xylene soluble fraction ranging from 2.5 to 4.5 dL/g; and (C) 10-45% of a second elastomeric copolymer of ethylene with at least a C 3 -C 8 α-olefin comonomer, said copolymer containing from 50 up to 75% of ethylene, and being soluble in xylene at room temperature in an amount from 50 to 85 wt%, the intrinsic viscosity [η] of the xylene soluble fraction ranging from 1.8 to 4.0 dL/g; wherein the sum of amounts of copolymer (B) and copolymer (C) ranges from 20 to 50% based on the total amount of components (A) to (C), the total amount of ethylene based on the total amount of components (A) to (C) is up to 23% by weight and the ratio between the ethylene content of the fraction insoluble in xylene at room temperature (C 2 xif) multiplied by the weight percentage of the fraction insoluble in xylene at room temperature (%XIF) and the ethylene content of the fraction soluble in xylene at room temperature (C 2 xsf) multiplied by the weight percentage of fraction soluble in xylene at room temperature (%SXF), i.e. (C 2 xif %XIF)/(C 2 xsf •%SXF), satisfies the following relation (I), wherein x is the total amount of ethylene.