Abstract: A recycled polyolefin composition comprising: A) from 42 wt. % to 72 wt. % of a recycled polypropylene composition, B) from 21 wt. % to 41 wt. % of a first polypropylene ethylene copolymer, and C) from 5 wt. % to 19 wt. % of a second polypropylene ethylene copolymer where the sum of the weight amounts of the recycled polypropylene composition, composition A), the first polypropylene ethylene copolymer, copolymer B), and the second polypropylene ethylene copolymer, copolymer C), represents the total weight of recycled polyolefin composition and is equal to 100 wt. %.

Abstract: Methods for processing LDPE recyclates including, but not limited to, polyethylene and polypropylene and compositions therefrom are provided. LDPE recyclate can be visbroken to improve processing characteristics and/or devolatilized to remove waste byproducts to produce processed LDPE recyclates. Processed LDPE recyclates are compounded with pre-consumer polyolefins to produce blend compositions having acceptable or even improved processing characteristics. Such pre-consumer polyolefins can also be visbroken to further tailor processing characteristics of such polymer blends. A combination of extruders and/or extruder zones can be used at the same or different locations for visbreaking and/or compounding of both LDPE recyclate and/or pre-consumer polyolefins.

Abstract: A process for the recycling of automotive plastic waste including the steps of: (i) sorting the automotive plastic waste (APW), thereby obtaining a plastic waste fraction containing at least 60% wt of a mixture of polyethylene (PE) and polypropylene (PP); (ii) shredding, pelletizing, or both the fraction, thereby obtaining a plastic feedstock having a bulk density higher than 100 g/l; (iii) depolymerizing the feedstock at 300-500° C., in the optional presence of a catalyst, thereby obtaining a depolymerization product and (iv) collecting the depolymerization product and separating the depolymerization product into a liquid stream and a gaseous stream.

Abstract: A recycled polyolefin composition comprising: (A) from 35 wt. % to 64 wt. % of a recycled polypropylene, (B) from 30 wt. % to 50 wt. % of a propylene homopolymer, (C) from 4 wt. % to 18 wt. % of a propylene ethylene copolymer. The propylene ethylene copolymer comprises: c1) from 29 wt. % to 59 wt. % of a propylene homopolymer; and c2) from 41 wt. % to 71 wt. % % of a propylene ethylene copolymer. The melt flow rate of the recycled polyolefin composition, determined according to ISO 1133 (230° C., 2.16 kg), ranges from 34.0 g/10 min. to 64.0 g/10 min.

Abstract: A polyolefin composition comprising: A) from 35 wt. % to 65 wt. % of a recycled polypropylene composition; B) from 35 wt. % to 65 wt. % of a virgin polypropylene composition comprising: (b1) from 69 wt. % to 92 wt. %, of a propylene homopolymer, having: a fraction soluble in xylene at 25° C. lower than 3.0 wt. %; and a Melt Flow Rate (ISO 1133 230° C./2.16 kg) ranging from 58 to 118 g/10 min; (b2) from 8 wt. % to 31 wt. % of a copolymer of propylene and ethylene having: units derived from ethylene, measured according to 13C-NMR, in an amount ranging from 27.8 wt. % to 59.0 wt. %.

Abstract: A) from 35 wt % to 63 wt % of a recycled polypropylene composition; B) from 37 wt % to 65 wt % of a virgin polypropylene composition comprising: (b1) from 65 wt % to 89 wt %, of a propylene homopolymer, having: a fraction soluble in xylene at 25° C. lower than 6.0 wt %; and a Melt Flow Rate (ISO 1133 230° C./2.16 kg) ranging from 8 to 38 g/10 min; (b2) from 11 wt % to 35 wt % of a copolymer of propylene and ethylene having: units derived from ethylene, measured according to 13C-NMR, in an amount ranging from 35.0 wt % to 63.

Abstract: A) from 35 wt. % to 80 wt. % of a recycled polypropylene composition; B) from 20 wt. % to 65 wt. % of a polypropylene composition comprising: (b1) from 45 wt. % to 70 wt. %, of a propylene homopolymer, having: a fraction soluble in xylene at 25° C. lower than 4.0 wt. %; and a Melt Flow Rate (ISO 1133 230° C./2.16 kg) ranging from 84.0 to 134.0 g/10 min; (b2) from 6 wt. % to 24 wt. % of a copolymer of propylene and ethylene having: units derived from ethylene, measured according to 13C-NMR, in an amount ranging from 17.5 wt. % to 38.3 wt. %; (b3) from 6 wt. % to 49 wt. % of a copolymer of propylene and ethylene having: units derived from ethylene, measured according to 13C-NMR, in an amount ranging from 41.8 wt. % to 70.3 wt. %.

Abstract: An extrusion-based additive manufacturing process for producing a 3D printed article, the process involving the steps of: (i) providing a build material in pellet form, containing a propylene polymer composition with specific weight percentages of heterophasic propylene copolymer, propylene homopolymer or copolymer, elastomeric block copolymer, elastomeric ethylene copolymer, glass material as filler, and a compatibilizer, the propylene polymer composition having MFR of at least 1.0 g/10 min; (ii) providing an additive-manufacturing system; (iii) at least partially fusing the build material within the system to create a fused build material; and (iv) extruding the fused build material to form the final 3D printed article.

Abstract: A process for producing articles with an extrusion-based additive manufacturing system using a consumable filament made from or containing a propylene polymer composition made from or containing: A) from 20% to 60% by weight of a heterophasic propylene copolymer; B) from 5% to 33% by weight of a propylene homopolymer or copolymer, wherein the copolymer contains up to 5% by weight of an alpha olefin; C) from 2% to 15% by weight of an elastomeric block copolymer made from or containing styrene; D) from 4% to 32% by weight of an elastomeric ethylene copolymer; E) from 5% to 50% by weight of a glass material as filler; and F) from 0.1% to 5% by weight of compatibilizer.

Abstract: A polyolefin composition (I) made from or containing: (A) 15-80% by weight of a heterophasic polymer composition made from or containing: (a) 50-80% by weight of a propylene polymer, and (b) 20-50% by weight of a copolymer of ethylene and an alpha-olefin; and (B) 20-85% by weight of a polyethylene composition made from or containing: (i) 25-85% by weight of a polyethylene component, having a weight average molecular weight Mw(i), equal to or higher than 1,000,000 g/mol; and (ii) 10-65% by weight of a polyethylene component, having an Mw(ii) equal to or lower than 5,000 g/mol, wherein the polyethylene composition (B) is made from or containing at least 70% by weight of (i)+(ii).

Abstract: An extrusion additive manufacturing process including the step of extruding a polyethylene composition having a melt flow index MIE of at least 0.1 g/10 min., the composition made from or containing: A) from 1% to 40% by weight of a polyethylene component having a weight average molar mass Mw, as measured by GPC (Gel Permeation Chromatography), equal to or higher than 1,000,000 g/mol; B) from 1% to 95% by weight of a polyethylene component having a Mw value from 50,000 to 500,000 g/mol; and C) from 1% to 59% by weight of a polyethylene component having a Mw value equal to or lower than 5,000 g/mol.

Abstract: A process for producing a low density polyethylene with modified melt flow index, comprising subjecting to thermal visbreaking a precursor polyethylene (I) comprising 35% by weight or more of LDPE.

Abstract: A process for producing a low density polyethylene with modified melt flow index, comprising subjecting to thermal visbreaking a precursor polyethylene (I) comprising 35% by weight or more of LDPE and blending the so obtained intermediate polyethylene product (II) with an additional polyethylene (III).

Abstract: A process for producing articles with an extrusion-based additive manufacturing system using a consumable filament made from or containing a propylene polymer composition made from or containing: A) from 20% to 60% by weight of a heterophasic propylene copolymer; B) from 5% to 33% by weight of a propylene homopolymer or copolymer, wherein the copolymer contains up to 5% by weight of an alpha olefin; C) from 2% to 15% by weight of an elastomeric block copolymer made from or containing styrene; D) from 4% to 32% by weight of an elastomeric ethylene copolymer; E) from 5% to 50% by weight of a glass material as filler; and F) from 0.1% to 5% by weight of compatibilizer.

Abstract: Methods for processing LDPE recyclates including, but not limited to, polyethylene and polypropylene and compositions therefrom are provided. LDPE recyclate can be visbroken to improve processing characteristics and/or devolatilized to remove waste byproducts to produce processed LDPE recyclates. Processed LDPE recyclates are compounded with pre-consumer polyolefins to produce blend compositions having acceptable or even improved processing characteristics. Such pre-consumer polyolefins can also be visbroken to further tailor processing characteristics of such polymer blends. A combination of extruders and/or extruder zones can be used at the same or different locations for visbreaking and/or compounding of both LDPE recyclate and/or pre-consumer polyolefins.

Abstract: An extrusion additive manufacturing process including the step of extruding a polyethylene composition having a melt flow index MIE of at least 0.1 g/10 min., the composition made from or containing: A) from 1% to 40% by weight of a polyethylene component having a weight average molar mass Mw, as measured by GPC (Gel Permeation Chromatography), equal to or higher than 1,000,000 g/mol; B) from 1% to 95% by weight of a polyethylene component having a Mw value from 50,000 to 500,000 g/mol; and C) from 1% to 59% by weight of a polyethylene component having a Mw value equal to or lower than 5,000 g/mol.