Abstract: The disclosure provides a polypropylene composition comprising at least 50 wt. % of polypropylene based on the total weight of the polypropylene composition, remarkable in that the polypropylene composition has a melt index MI2 ranging from 10.0 to 600.0 g/10 min as determined according to ISO 1133-2011 at 230° C. under a load of 2.16 kg; an Mz below 1,000,000 g/mol as determined by size exclusion chromatography; an Mw/Mn ranging from 2.2 to 10.0 as determined by size exclusion chromatography a ratio of complex viscosity at a frequency of 0.01 rad/sec to the complex viscosity at a frequency of 100 rad/sec of at most 8.0, said ratio being measured at 190° C.; and a tan delta at 0.1 rad at 190° C. above 2.5.

Abstract: The disclosure relate to a process for grafting a polypropylene-containing material to produce a modified polypropylene composition comprising the steps of providing an extruder with thermal regulation devices; providing a polypropylene-containing material comprising at least 50 wt. % of polypropylene based on the total weight of the polypropylene-containing material; providing a grafting agent in a content ranging from 0.8 to 10.0 wt. % based on the total weight of the polypropylene-containing material provided in step (b), wherein the grafting agent comprises at least one double bound per molecule; extruding the polypropylene-containing material and the grafting agent to obtain a modified polypropylene composition; wherein said step comprises a thermal treatment of the polypropylene-containing material at a maximum barrel temperature Ts of at least 345° C. to at most 440° C. in one or more hot zones of the extruder; and recovering a modified polypropylene composition.

Abstract: The disclosure provides a process for the treatment of an initial polypropylene-containing material to produce a polypropylene composition comprising the steps of providing a twin screw extruder with thermal regulation devices; providing an initial polypropylene-containing material comprising at least 50 wt. % of polypropylene; extruding the initial polypropylene-containing material to obtain a polypropylene composition; and recovering a polypropylene composition; wherein the step of extruding comprises a thermal treatment of the initial polypropylene-containing material at a maximum barrel temperature Ts of at least 345° C. in one or more hot zones of the extruder by self-heating.

Abstract: The disclosure relates to a process to produce a polymer composition comprising melt blending from 10 to 90 wt. % of polyethylene resins; from 90 to 10 wt. % of materials selected from materials having a polar functional group, inorganic polar particles, polymers having a polar functional group, HD silica, fumed silica, carbon-containing particles, carbon fibres, glass fibres, natural fibres, and any mixture thereof; from 0.5 to 20 wt. % of a grafted polyethylene, and the compatibilizer is comprising at least 70 wt. % of polyethylene based on the total weight of the compatibilizer, and has a melt index MI2 ranging from 25 to 450.0 g/10 min, an Mw/Mn ranging from 2.0 to 4.5; a complex viscosity at 0.1 rad/sec at 190° C. of at most 25,000 Pa·s; and a grafting agent content ranging from 0.5 to 15.0 wt. % based on the total weight of the compatibilizer.

Abstract: A process to produce a polymer composition comprising providing from 10 to 90 wt. % of a component A being one or more polypropylene resins; from 90 to 10 wt. % of a component B being one or more materials having a polar functional group, polymers having a polar functional group, natural fibres, and any mixture thereof; and from 0.5 to 20 wt. % of a compatibilizer, and melt blending the components and the compatibilizer to obtain a polymer composition; wherein the compatibilizer is a grafted blend of polyethylene and polypropylene comprising from 5 to 90 wt. % of polyethylene, has a melt index MI2 ranging from 5.0 to 200.0 g/10 min according to ISO 1133-2011 at 190° C. under a load of 2.16 kg a complex viscosity at 0.1 rad/sec at 190° C. of at most 1.000 Pa·s; and a grafting agent content ranging from 0.3 to 5.0 wt. %.

Abstract: Process for treatment of an initial polyethylene-containing material to produce a polyethylene composition comprising providing a twin-screw extruder with thermal regulation devices; providing an initial polyethylene-containing material comprising at least 50 wt. % of polyethylene based on the total weight of the initial polyethylene-containing material; extruding the initial polyethylene-containing material to obtain a polyethylene composition; wherein extrusion is performed with a residence time of less than 20 min; and recovering a polyethylene composition; wherein extruding comprises a thermal treatment of the initial polyethylene-containing material at a temperature of at least 300° C. in one or more hot zones of the extruder by self-heating to have a maximum barrel temperature ranging from 300 to 460° C. in at least one hot zone of the extruder.

Abstract: Process for treatment of an initial polyethylene-containing material to produce a polyethylene composition comprising providing a twin-screw extruder with thermal regulation devices; providing an initial polyethylene-containing material comprising at least 50 wt. % of polyethylene based on the total weight of the initial polyethylene-containing material; extruding the initial polyethylene-containing material to obtain a polyethylene composition; wherein extrusion is performed with a residence time of less than 20 min; and recovering a polyethylene composition; wherein extruding comprises a thermal treatment of the initial polyethylene-containing material at a temperature of at least 300° C. in one or more hot zones of the extruder by self-heating to have a maximum barrel temperature ranging from 300 to 460° C. in at least one hot zone of the extruder.

Abstract: Process of grafting of a polyethylene-containing material to produce a modified polyethylene composition comprising providing a twin screw extruder with one or more thermal regulation devices; a polyethylene-containing material and a grafting agent and extruding the polyethylene-containing material and the grafting agent to obtain a modified polyethylene composition; the step of extruding comprises a thermal treatment of the polyethylene-containing material by self-heating of the material at a maximum barrel temperature Ts ranging from 315° C. to 410° C. in one or more hot zones of the extruder.

Abstract: Process of grafting of a polyethylene-containing material to produce a modified polyethylene composition comprising providing a twin screw extruder with one or more thermal regulation devices; a polyethylene-containing material and a grafting agent and extruding the polyethylene-containing material and the grafting agent to obtain a modified polyethylene composition; the step of extruding comprises a thermal treatment of the polyethylene-containing material by self-heating of the material at a maximum barrel temperature Ts ranging from 315° C. to 410° C. in one or more hot zones of the extruder.

Abstract: Polyethylene composition comprising at least 50 wt. % of polyethylene based on the total weight of the polyethylene composition, and having a density of at least 0.910 g/cm3; a melt index MI2 ranging from 3.0 to 60.0 g/10 min; an unsaturation index higher than 2,000 wherein the unsaturation index is the product of the Mn in Dalton and the vinyl unsaturation units per 1,000 carbon atoms as determined by ASTM D6248-98:2004; a complex viscosity at 0.1 rad/sec at 190° C. ranging from 200 to 20,000 Pa·s; and a ratio of complex viscosity at a frequency of 0.01 rad/sec to the complex viscosity at a frequency of 100 rad/sec of at most 8.0, said ratio being measured at 190° C.

Abstract: Polyethylene composition comprising at least 50 wt. % of polyethylene based on the total weight of the polyethylene composition, and having a density of at least 0.910 g/cm3; a melt index MI2 ranging from 3.0 to 60.0 g/10 min; an unsaturation index higher than 2,000 wherein the unsaturation index is the product of the Mn in Dalton and the vinyl unsaturation units per 1,000 carbon atoms as determined by ASTM D6248-98:2004; a complex viscosity at 0.1 rad/sec at 190° C. ranging from 200 to 20,000 Pa·s; and a ratio of complex viscosity at a frequency of 0.01 rad/sec to the complex viscosity at a frequency of 100 rad/sec of at most 8.0, said ratio being measured at 190° C.

Abstract: The present invention relates to an oxygen-scavenging composition comprising: at least 1.0% by weight of polybutadiene based on the total weight of the composition, wherein said polybutadiene has a number average molecular weight Mn of from 1000 to 10000 g/mol as determined by gel permeation chromatography (GPC) as described in the specification under the Determination methods; and a polypropylene component. The present invention also relates to the use of an oxygen-scavenging composition according to the invention for the manufacture of an article.

Abstract: The invention relates to a conductive article made from a composite material comprising: from 50 to 99 wt % of a first polyethylene resin as based on the total weight of said composite material, wherein the first polyethylene resin has a melt index MI2 of at most 0.45 g/10 min as determined according to ISO 1133 (190° C.—2.16 kg), and a density ranging from 0.920 g/cm3 to 0.980 g/cm3 as determined according to ISO 1183 at a temperature of 23° C.; and from 0.2 to 10 wt % of carbon particles as based on the total weight of said composite material as determined according to ISO 11358 selected from nanographene, carbon nanotubes or any combination thereof; wherein the composite material further comprises from 0.10 to 0.48 wt % of polyethylene glycol as based on the total weight of the composite material, and in that said polyethylene glycol is selected to have a weight average molecular weight Mw of at most 20,000 g/mol.

Abstract: The invention relates to a conductive article made from a composite material comprising: from 50 to 99 wt % of a first polyethylene resin as based on the total weight of said composite material, wherein the first polyethylene resin has a melt index MI2 of at most 0.45 g/10 min as determined according to ISO 1133 (190° C.—2.16 kg), and a density ranging from 0.920 g/cm3 to 0.980 g/cm3 as determined according to ISO 1183 at a temperature of 23° C.; and from 0.2 to 10 wt % of carbon particles as based on the total weight of said composite material as determined according to ISO 11358 selected from nanographene, carbon nanotubes or any combination thereof; wherein the composite material further comprises from 0.10 to 0.48 wt % of polyethylene glycol as based on the total weight of the composite material, and in that said polyethylene glycol is selected to have a weight average molecular weight Mw of at most 20,000 g/mol.

Abstract: The present invention relates to a process for the preparation of polyolefin fibers having mean fiber diameters of less than 5000 nm, comprising the steps of: a) preparing a polyolefin solution in a solvent, b) placing said polyolefin solution in a fiber producing device comprising a body configured to receive said polyolefin solution, said body comprising one or more openings, and c) rotating the fiber producing device, wherein rotation of the fiber producing device causes the polyolefin solution to be passed through said one or more openings to produce polyolefin fibers having mean fiber diameters of less than 5000 nm, wherein said polyolefin is selected from the group comprising polyethylene polymers and copolymers having a weight average molecular weight Mw of at least 40 000 daltons, and polypropylene polymers and copolymers, having a weight average molecular weight Mw of at least 120 000 daltons; wherein said fiber producing device is rotated at a speed of at least 10 000 revolutions per minutes (RPM).

Abstract: A nanocomposite can include a polyolefin composition having at least one polyolefin. The polyolefin composition can have a multimodal molecular weight distribution, such as a bimodal molecular weight distribution. The nanocomposite can also include at least 0.001% by weight of nanoparticles, relative to a total weight of the nanocomposite. The nanoparticles can be carbon nanoparticles, silicon nanoparticles, or SiC nanoparticles. The nanocomposite can be prepared by providing the polyolefin composition, providing the nanoparticles, and blending the nanoparticles with the polyolefin composition. Formed articles can include the nanocomposite.

Abstract: A nanocomposite can include a polyolefin composition having at least one polyolefin. The polyolefin composition can have a multimodal molecular weight distribution, such as a bimodal molecular weight distribution. The nanocomposite can also include at least 5% by weight of nanoparticles, relative to a total weight of the nanocomposite. The nanoparticles can be carbon nanoparticles, silicon nanoparticles, or SiC nanoparticles. A nanocomposite masterbatch can be prepared by melt blending the polyolefin composition with the nanoparticles. A polyolefin resin can be prepared by blending the nanocomposite with a polyolefin. Formed articles can include the polyolefin resin.

Abstract: A nanocomposite can include a polyolefin composition having at least one polyolefin. The polyolefin composition can have a multimodal molecular weight distribution, such as a bimodal molecular weight distribution. The nanocomposite can also include at least 0.001% by weight of nanoparticles, relative to a total weight of the nanocomposite. The nanoparticles can be carbon nanoparticles, silicon nanoparticles, or SiC nanoparticles. The nanocomposite can be prepared by providing the polyolefin composition, providing the nanoparticles, and blending the nanoparticles with the polyolefin composition. Formed articles can include the nanocomposite.

Abstract: A nanocomposite can include a polyolefin composition having at least one polyolefin. The polyolefin composition can have a multimodal molecular weight distribution, such as a bimodal molecular weight distribution. The nanocomposite can also include at least 5% by weight of nanoparticles, relative to a total weight of the nanocomposite. The nanoparticles can be carbon nanoparticles, silicon nanoparticles, or SiC nanoparticles. A nanocomposite masterbatch can be prepared by melt blending the polyolefin composition with the nanoparticles. A polyolefin resin can be prepared by blending the nanocomposite with a polyolefin. Formed articles can include the polyolefin resin.

Abstract: The present invention relates to nanocomposites comprising nanoparticles and a thermoplastic polymer composition, said nanocomposite being characterized by improved homogeneity, and in consequence by improved properties. Further, the present invention relates to a process for the production of such nanocomposites by first dispersing the nanoparticles in a dispersant and subsequent blending with a thermoplastic polymer composition.