Abstract:
A consumable filament for use in an extrusion-based additive manufacturing system comprising a propylene terpolymer containing ethylene and 1-butene or 1-hexene as comonomers having: -MFR L (Melt Flow Rate according to ISO 1133, condition L, i.e. 230°C and 2.16 kg load) ranging from 1 to 20 g/10 min; - xylene solubles measured at 25°C comprised between 3 wt% and 30 wt%.
Abstract:
A propylene polymer composition comprising: a) from 40 wt% to 80 wt% of a propylene 1-hexene copolymer containing from 5.5 to 9.0% 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 20 wt% to 60 wt% of a propylene ethylene copolymer containing from 1.5 wt% to 6.5 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 translation:丙烯聚合物组合物,其包含:a)40重量%至80重量%的含5.5至9.0重量%的1-己烯衍生单元的丙烯1-己烯共聚物,所述单元具有熔体流动 速率(MFR,根据ASTM D 1238,230℃/ 2.16kg,即在230℃,2.16kg的负荷下测量)为3.5-12.0g / 10min; b)20重量%至60重量%的含有1.5重量%至6.5重量%的乙烯衍生单元的丙烯乙烯共聚物,其熔体流动速率(MFR,根据ASTM D 1238,230℃/ 2.16 kg,即在230℃,2.16kg的负载下)为3.5-12.0g / 10min。 p>
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: - molecular weight distribution (MWD), expressed in terms of Mw/Mn, greater than 4.0; - the creep and recovery curve measured on the polymer fuse at 200°C measured accordingto the procedure reported in the characterizing section shows a maximum value between 600 and 200 seconds lower than 53x10 -4 1/Pa.
Abstract:
Polyolefin compositions comprising: (A) 5-35% by weight of a propylene-based polymer containing 90% by weight or more of propylene units and containing 10% by weight or less of a fraction soluble in xylene at 25°C (XS A ); (B) 25-50% by weight, of an ethylene homopolymer containing 5% by weight or less of a fraction soluble in xylene at 25°C (XS B ) referred to the weight of (B); and (C) 30-60% by weight, of a copolymer of ethylene and propylene containing from 25% to 75% by weight of ethylene units and containing from 55% to 95% by weight, of a fraction soluble in xylene at 25°C (XS C ). The composition has 20% by weight or less of a fraction obtained in the second fractionation step in a preparative fractionation method.
Abstract:
Articles, particularly pressure pipes, having high strength as well as high stiffness and very good impact resistance even at low temperatures can be obtained by using a heterophasic polyolefϊn composition comprising (percent by weight) 70-90% of a random copolymer of propylene with 0.5-6% of 1-hexene, and 10-30% of a polymer of ethylene with a C 3 -C 10 α- olefϊn and optionally a diene, wherein the polymer of ethylene has an ethylene content higher than 45% and an intrinsic viscosity [η] value from 3 to 5 dl/g. A particular advantage of the present invention is that articles comprising the above heterophasic polyolefϊn composition show a low ductile to brittle transition temperature (DBTT).
Abstract:
A polyolefin composition having good transparency and mechanical properties comprising, all percent amounts being by weight: A) from 70 to 98% of a propylene homopolymer or copolymer having haze of 25% or less and melting temperature of 130°C or higher; and B) from 2 to 30% of a butene-1 copolymer containing from 0.5 to 30% of one or more comonomer(s).
Abstract:
A propylene polymer composition having a Flexural modulus lower than 500MPa, a total ethylene content from 9 to 30% by weight, a xylene soluble fraction at room temperature higher than 25% by weight, a melting temperature measured by DSC (Tm°C) from 130 to 150°C and a ratio between the weight of xylene soluble fraction at 25°C and the hexane soluble fraction determined on plaque (100μm) of higher than 4.
Abstract:
A propylene polymer composition comprising (weight percentages being referred to the sum of A+B): A propylene polymer composition comprising (weight percentages being referred to the sum of A+B): (A) 60-90% by weight of a copolymer of propylene with ethylene containing less than 2.5%wt of ethylene units; and (B) 10-40% by weight of a copolymer of propylene comprising from 15 to 35%wt of ethylene units, said polymer composition having a melt flow rate value according to ISO 1133 (230°C, 2.16 Kg) of less than 10 g/10min.
Abstract:
The present disclosure relates to polyolefin compositions, in particular polypropylene compositions containing (a) recycled polypropylene, (b) recycled polyethylene (c) a polyolefin elastomer (POE) and (d) a specific polypropylene heterophasic composition that can be used in injection molded articles. The polyolefin compositions according to the present disclosure find application in automotive field, and houseware such as suitcase and containers.
Abstract:
A soft polyolefin composition comprising for producing sheets or membranes, the polyolefin composition comprising: (A) 18-35% by weight of a copolymer of propylene with at least one alpha-olefin, wherein the copolymer contains 2.0-4.0% by weight of alpha-olefin, the amount of alpha-olefin is based on the weight of (A) and has melt flow rate (MFRA) ranging from 30 to 60 g/10min; and (B) 65-82% by weight of a copolymer of propylene with at least one alpha-olefin, and optionally a diene, the copolymer comprising 20-35% by weight of alpha-olefin, the amount of alpha olefin being based on the weight of (B), wherein - the polyolefin composition comprises a fraction that is soluble in xylene at 25°C (XS(tot)) in an amount higher than 70% by weight; - the amounts of (A), (B) and of the fraction soluble in xylene at 25°C (XS(tot)) are based on the total weight of the polyolefin composition; and - the melt flow rate (MFR) of the polyolefin composition ranges from 0.2 to 2.0 g/10 min.