Abstract:
A consumable filament for use in an extrusion-based additive manufacturing system comprising a propylene ethylene copolymer having: - ethylene derived units content ranging from 3.0 wt% to 12.0 wt%; - MFR L (Melt Flow Rate according to ISO 1133, condition L, i.e. 230°C and 2.16 kg load) from 4 to 20 g/10 min; and - xylene solubles measured at 25°C comprised between 3 wt% and 30 wt%.
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 terpolymers are prepared by polymerizing propylene, ethylene and an alpha-olefin selected from the group of C4-C8 alpha-olefins in the presence of a catalyst system obtained by contacting a solid catalyst component comprising a magnesium halide, a titanium compound having at least a Ti-halogen bond and at least two electron donor compounds one of which being present in an amount from 40 to 90% by mol with respect to the total amount of donors and selected from succinates and the other selected from 1,3 diethers, an aluminum hydrocarbyl compound, and optionally an external electron donor compound.
Abstract:
1. A polyolefin composition comprising: A) from 85.0 wt% to 99.5 wt%; A terpolymer containing propylene, ethylene and 1- hexene wherein: (i) the content of 1-hexene derived units ranges from 1.0 wt% to 5.0%; (ii) the content of ethylene derived units is comprised between 0.5 wt% and 10.0 wt% (iii) the melting temperature ranges from 130° C to 145° C; B) from 0.5 wt% to 15 wt%; of a ethylene copolymer with a comonomer selected from 1-butene, 1-hexene and 1-Octene containing from 10 wt% to 50 wt% of 1-butene derived units aid copolymer having a MFR (measured at 190°C 2.16 kg of load) comprised between 0.5 g/10 min; wherein the resulting polyolefin composition has an melt flow rate (230°C/5 kg.. ISO 133) ranging from 0.2 g/10min to 4.0 g/10min; the sum A+B being 100.
Abstract:
A propylene and 1-hexene copolymer containing from 0.5 wt% to less than 5wt% of 1-hexene derived units said copolymer having: a) a melting point higher than 145°C; b) a melt flow rate (MFR2) determined according to ISO method 1133 (230° C, 2.16 kg ranging from 10 dl/10 min to less than 60 dl/10 min; said copolymer being chemically degradated to MFR2 and wherein the ratio MFR2/MFR1 is comprised between 15 and 56; wherein MFR1 is the melt flow rate measured according to ISO method 1133 (230° C, 2.16 kg) of the propylene/1-hexene copolymer before the degradation
Abstract:
A polypropylene composition for injection-moulded drainage systems comprising 78-84 wt% of a crystalline propylene polymer, 8 to less than 13 wt% of an elastomeric copolymer and 8 to less than 13 wt% of polyethylene. The said composition exhibits a flexural modulus value higher than 1400 MPa, a melt flow rate (MFR), determined according to ISO method 1133 (230° C and 2.16 kg), of from 1.5 to 5.0 g/10 min, and a value of Izod impact resistance at 0° C of more than 6 kJ/m2 according to ISO method 180/1 A.
Abstract translation:一种用于注射成型的排水系统的聚丙烯组合物,其包含78-84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8至小于13重量%的聚乙烯。 所述组合物显示高于1400MPa的挠曲模量值,根据ISO方法1133(230℃和2.16kg)测定的熔体流动速率(MFR)为1.5至5.0g / 10min,值为 根据ISO方法180/1 A,0℃下的悬臂梁式冲击强度大于6kJ / m 2。
Abstract:
The present invention relates to a polyolefin sheet having at least one layer comprising: - 70-88 %wt of a component 1) being a propylene based copolymer having a content of α-olefin derived units selected from ethylene and C 4 -C 10 α-olefins and mixtures thereof comprised between 0.2% by weight and 35% by weight; and - 12-30%wt of a component 2) being a cyclic-olefin copolymer (COC). The polyolefin sheet according to the present invention has improved water-vapor barrier properties and is particularly suitable to be used for pharmaceutical blisters.
Abstract:
A process for the preparation of a propylene copolymer composition having a Flexural modulus lower than 500MPa, a total ethylene content higher than 9% and a Xylene soluble fraction at room temperature higher than 20% comprising at least one polymerization step carried out in a gas-phase polymerization reactor comprising at least two interconnected polymerization zones said process being characterized by the fact that at least 30% by weight of said xylene soluble fraction is produced in the polymerization step carried out in a gas-phase polymerization reactor comprising at least two interconnected polymerization zones.
Abstract:
Propylene polymers having specific values of total comonomer content and melting temperature, articles obtained therefrom, in particular extrusion blow molded articles, and gas-phase process for obtaining said propylene polymers.