Abstract: The present disclosure relates to polyethylene compositions, articles including such polyethylene compositions, and methods of making polyethylene compositions and articles (e.g., films) thereof. In some embodiments, a method of making a polyethylene composition includes introducing ethylene, an optional comonomer, a diluent, a catalyst, and 30 ppm to 500 ppm of a cocatalyst to a loop reactor under conditions sufficient to produce a slurry comprising the polyethylene composition. The method includes continuously discharging a portion of the slurry from the loop reactor as effluent comprising the polyethylene composition. The method includes flashing the effluent to vaporize diluent and form a concentrated effluent comprising the polyethylene composition. The method includes condensing the vaporized diluent. The polyethylene composition comprises 80 wt % or greater ethylene-derived units and has a density within the range from 0.935 to 0.975 g/cm3; and a melt index (I2.16) of 2 g/10 min to 4 g/10 min.

Abstract: The present invention relates generally to polyethylenes comprising: (a) a resin density of about 0.950-0.960 g/cm3 (ASTM D1505); (b) a melt index at 2.16 kg loading and 190° C. of about 0.5-2 g/10 min (ASTM D1238); (c) a high load melt index at 21.6 kg loading and 190° C. of about 15-28 g/10 min (ASTM D1238); (d) a polydispersity index of about 3 or less (gel permeation chromatography); and (e) a crystallization peak width at half height of about 5° C. or less (ASTM D3418). Polyethylene films having a film density greater than 0.944 g/cm3 or molded articles may comprise the polyethylenes. Multi-layered films may comprise one or more layers of the polyethylene films. Methods may comprise combining ethylene with a catalyst system in a slurry loop reactor, the catalyst system comprising: (i) bis(n-propylcyclopentadienyl) zirconium dichloride; (ii) a support material; and (iii) an activator; and obtaining the polyethylenes.

Abstract: Extrusion blow molded articles and processes for making same. In some examples, the article can include a polyethylene copolymer derived from ethylene and at least one C3 to C20 ?-olefin. The polyethylene copolymer can have an I2.16 (190° C./2.16 kg) of 0.2 g/10 min to 1 g/10 min, a melt index ratio of 30 to 80, and a density of 0.910 g/cm3 to 0.940 g/cm3. The article can be formed by extrusion blow-molding the polyethylene copolymer. At least one surface of the article can have an average gloss of at least 40.

Abstract: Provided herein are polyethylene compositions with unimodal molecular weight distribution exhibiting an excellent balance of physical properties. The polyethylene compositions may have density of 0.935 to 0.975 g/cm3 and Melt Index (I2.16) of 0.1 to 1 g/10 min. Polyethylene compositions of certain embodiments may exhibit environmental stress crack resistance (ESCR, 10% Igepal, ASTM D1693 Cond. B) within the range from 45 to 80 hours, and/or (ESCR, 100% igepal, ASTM D1693 Cond. B) within the range from 70 to 250 hours. Such ESCR outperforms other unimodal resins of similar melt index and density, approaching ESCR performance of more expensive and complex resins with bimodal molecular weight distribution. The polyethylene compositions of certain embodiments may have two distinct crystalline fractions as shown by temperature rising elution fractionation (TREF).

Abstract: The present disclosure relates to polyethylene compositions, articles including such polyethylene compositions, and methods of making polyethylene compositions and articles (e.g., films) thereof. In some embodiments, a method of making a polyethylene composition includes introducing ethylene, an optional comonomer, a diluent, a catalyst, and 30 ppm to 500 ppm of a cocatalyst to a loop reactor under conditions sufficient to produce a slurry comprising the polyethylene composition. The method includes continuously discharging a portion of the slurry from the loop reactor as effluent comprising the polyethylene composition. The method includes flashing the effluent to vaporize diluent and form a concentrated effluent comprising the polyethylene composition. The method includes condensing the vaporized diluent. The polyethylene composition comprises 80 wt % or greater ethylene-derived units and has a density within the range from 0.935 to 0.975 g/cm3; and a melt index (I2.16) of 2 g/10 min to 4 g/10 min.

Abstract: Provided herein are polyethylene compositions having a combination of properties including: density from about 0.930 to 0.975 g/cm3; broad molecular weight distributions (Mw/Mn?10 and/or Mz/Mn?80) and a highly branched architecture (e.g., g?LCB less than or equal to 0.85, preferably less than or equal to 0.75). The polyethylene compositions may further have a low molecular weight fraction (LMWF) and a high molecular weight fraction (HMWF), such that the wt % of LMWF in the compositions is greater than the wt % of HMWF. The polyethylene compositions may be suitable for making films, particularly oriented films such as uni axially (machine-direction-oriented) or biaxially-oriented films, and in particular all-PE films.

Abstract: A recycled resin composition with significantly improved stress crack resistance and impact properties with minimal loss of stiffness. The recycled resin composition is a blend of at least one recycled resin (PCR and/or PIR), at least one virgin high density polyethylene and at least one virgin metallocene catalyzed linear low density polyethylene. The recycled resin composition can have a flex modulus @0.05 in/min of 110,000 psi to 180,000 psi, as measured by ASTM D790, Proc. A 1% Secant Modulus; and/or an ESCR, as measured by 100% Igepal Cond B, ASTM D1693, of about 10 hr to about 75 hr.

Abstract: Provided herein are polyethylene compositions with unimodal molecular weight distribution exhibiting an excellent balance of physical properties. The polyethylene compositions may have density of 0.935 to 0.975 g/cm3 and Melt Index (I2.16) of 0.1 to 1 g/10 min. Polyethylene compositions of certain embodiments may exhibit environmental stress crack resistance (ESCR, 10% Igepal, ASTM D1693 Cond. B) within the range from 45 to 80 hours, and/or (ESCR, 100% igepal, ASTM D1693 Cond. B) within the range from 70 to 250 hours. Such ESCR outperforms other unimodal resins of similar melt index and density, approaching ESCR performance of more expensive and complex resins with bimodal molecular weight distribution. The polyethylene compositions of certain embodiments may have two distinct crystalline fractions as shown by temperature rising elution fractionation (TREF).

Abstract: Extrusion blow molded articles and processes for making same. In some examples, the article can include a polyethylene copolymer derived from ethylene and at least one C3 to C20 ?-olefin. The polyethylene copolymer can have an I2.16 (190° C./2.16 kg) of 0.2 g/10 min to 1 g/10 min, a melt index ratio of 30 g/10 min to 80 g/10 min, and a density of 0.910 g/cm3 to 0.940 g/cm3. The article can be formed by extrusion blow-molding the polyethylene copolymer. At least one surface of the article can have an average gloss of at least 40.

Abstract: A recycled resin composition with significantly improved stress crack resistance and impact properties with minimal loss of stiffness. The recycled resin composition is a blend of at least one recycled resin (PCR and/or PIR), at least one virgin high density polyethylene and at least one virgin metallocene catalyzed linear low density polyethylene. The recycled resin composition can have a flex modulus @0.05 in/min of 110,000 psi to 180,000 psi, as measured by ASTM D790, Proc. A 1% Secant Modulus; and/or an ESCR, as measured by 100% Igepal Cond B, ASTM D1693, of about 10 hr to about 75 hr.

Abstract: Multi-layered packaging materials. In an embodiment, a packaging material includes: an outer layer comprising a colorant and from about 70 wt % to about 99 wt % of a first post consumer resin (PCR); and an inner layer comprising a polymer and being about 3 wt % to about 99 wt % of the total packaging material. The packaging material can also include a middle comprising another colorant and from about 70 wt % to about 100 wt % of another PCR. In another embodiment, a packaging material includes: an outer layer comprising a first colorant and from about 70 wt % to about 99 wt % of a first virgin polymer; a middle layer that is about 40 wt % to about 95 wt % of the total packaging material, the middle layer comprising a PCR; and an inner layer comprising a second virgin polymer. The foregoing packaging materials can be made by co-extruding the different layers therein.