Abstract: A multilayer ethylene-based shrink films comprising a core layer comprising a polyethylene resin, and two skin layers, wherein the core layer is positioned between the two skin layers, wherein the polyethylene resin comprises greater than 50 mol. % of the units derived from ethylene and less than 30 mol. % of the units derived from one or more alpha-olefin comonomers, has greater than 50% of the copolymer fraction eluting between 75.0° C. and 95.0° C. as determined by Crystallization Elution Fractionation (CEF), and has a density ranging from 0.915 to 0.940 g/cc, and wherein the film is biaxially-oriented.

Abstract: A magnesium halide-supported titanium procatalyst, a catalyst prepared therefrom, an enhanced catalyst consists essentially of a product of a reaction of the magnesium halide-supported titanium procatalyst and a hydrocarbylaluminoxane. Also methods of preparing the (pro)catalysts, a method of polymerizing an olefin, and a polyolefin made by the polymerization method.

Abstract: The invention provides a process to form a second composition comprising a modified ethylene-based polymer, the process comprising the step of contacting under thermal treatment conditions a first composition comprising a first ethylene-based polymer, and the following: (A) at least one carbon-carbon (C—C) free radical initiator; and (B) at least one free radical initiator other than a C—C free radical initiator of (A) (a non-C—C free radical initiator). The melt strength of the second composition is typically at least 15% or greater than the melt strength of the first composition. The second composition typically has a gel content less than or equal to 40.

Abstract: The invention provides a process to prepare a second propylene-based polymer from a first propylene-based polymer, each propylene-based polymer having a melt flow rate (MFR; 2.16 kg/230° C.) with the MFR of the second propylene-based polymer greater than the MFR of the first propylene-based polymer, the process comprising the step of contacting under visbreaking conditions the first propylene-based polymer with at least one carbon-carbon (C—C) free-radical initiator of Structure (I): (Structure (I)) wherein R1, R2, R3, R4, R5 and R6 are each, independently, a hydrocarbyl group or a substituted hydrocarbyl group, and wherein, optionally, two or more R groups (R1, R2, R3, R4, R5 and R6) form a ring structure.

Abstract: Disclosed herein is a blown film comprising at least 50 wt. % of a polyethylene composition comprising the reaction product of ethylene and optionally, one or more alpha-olefin comonomers, wherein the polyethylene composition is characterized by the following properties: a melt index, I2, of from 0.1 to 2 g/10 min; a density of from 0.940 to 0.970 g/cm3; a melt flow ratio, I10/I2, of from 5.5 to 7.2; and a molecular weight distribution (Mw/Mn) of from 2.2 to 3.5.

Abstract: Mono- and multi-layer films comprising a polyethylene composition which comprises the reaction product of ethylene and optionally one or more alpha olefin comonomers in the presence of a catalyst composition comprising a multi-metallic procatalyst via a solution polymerization process in at least one reactor; wherein said polyethylene composition is characterized by one or more of the following properties: a melt index, I2, measured according to ASTM D 1238 (2.16 kg@190° C.), from 0.1 to 5 g/10 min; density, measured according to ASTM D-792, from 0.910 to 0.935 g/cc; melt flow ratio, I10/I2, wherein I10 is measured according to ASTM D1238 (10 kg@190° C.), from 6 to 7.4; and molecular weight distribution, (Mw/Mn) from 2.5 to 3.5 are provided. Also provided are articles made from the mono- and/or multi-layer films.

Abstract: The invention provides an ethylene-based polymer comprising the following properties: a) a ZSVR value from 1.2 to 2.6, b) a MWD from 1.5 to 2.8, and c) a tan delta (0.1 rad/s; 190 C) from 5.0 to 50.

Abstract: The instant invention provides a polymerization process for producing ethylene based polymers.

Abstract: The instant invention provides procatalysts and catalyst systems for olefin polymerization, olefin based polymers polymerized therewith, and process for producing the same.

Abstract: Functionalized ethylene-based polymers are prepared by a process comprising the step of reacting a first composition comprising an ethylene-based polymer with at least the following: (A) at least one carbon-carbon (C—C) free radical initiator of Structure I: wherein R1, R2, R3, R4, R5 and R6 are each, independently, hydrogen or a hydrocarbyl group; and wherein, optionally, two or more R groups (R1, R2, R3, R4, R5 and R6) form a ring structure; and with the provisos that (i) at least one of R2 and R5 is a hydrocarbyl group of at least two carbon atoms, and (ii) at least one of R3 and R6 is a hydrocarbyl group of at least two carbon atoms; and (B) at least one free radical initiator other than the carbon-carbon (C—C) free radical initiator of Structure I (a non-C—C free radical initiator), e.g., a peroxide; and (C) at least one functionalization agent, e.g., maleic anhydride.

Abstract: An ethylene/alpha-olefin copolymer composition having a density from 0.935 to 0.955 g/cc; a ratio of weight average molecular weight to number average molecular weight, Mw/Mn, of from 3 to 10; a z-average molecular weight, Mz, from 200 kg/mol to 500 kg/mol; and a PENT value of greater than 500 hours at 80° C. and 2.4 MPa; wherein when the composition is formed into a monolayer pipe the pipe has a pipe hydrostatic strength of greater than 100 hours at 20° C. and 12.0 MPa. Also provided is a pipe or pipe fitting comprising the ethylene/alpha-olefin copolymer composition.

Abstract: Disclosed herein is a cast film comprising a polyethylene composition comprising the reaction product of ethylene and optionally one or more alpha-olefin comonomers, wherein said polyethylene composition is characterized by the following properties: a melt index, I2, measured according to ASTM D1238 (2.16 kg, 190° C.), of from 1 to 20 g/10 min; a density (measured according to ASTM D792) of from 0.935 to 0.970 g/cm3; a melt flow ratio, I10/I2, wherein I10 is measured according to ASTM D1238 (10 kg, 190° C.) of from 5.5 to 7.0; a molecular weight distribution (Mw/Mn) of from 2.2 to 3.5; and a vinyl unsaturation of greater than 0.12 vinyls per one thousand carbon atoms present in the backbone of the composition.

Abstract: The invention provides a composition comprising a first composition, comprising at least one ethylene-based polymer, and wherein the first composition comprises a MWCDI value greater than 0.9, and a melt index ratio I10/I2 that meets the following equation: I10/I2?7.0?1.2×log (I2). The invention also provides a process to form a composition comprising at least two ethylene-based polymers, said process comprising the following: polymerizing ethylene, and optionally at least one comonomer, in solution, in the presence of a catalyst system comprising a metal-ligand complex of Structure I, as described herein, to form a first ethylene-based polymer; and polymerizing ethylene, and optionally at least one comonomer, in the presence of a catalyst system comprising a Ziegler/Natta catalyst, to form a second ethylene-based polymer.

Abstract: The instant invention provides nonwoven fabrics and staple or binder fibers prepared from an ethylene-based polymer having a Comonomer Distribution Constant in the range of from greater than from 100 to 400, a vinyl unsaturation of less than 0.1 vinyls per one thousand carbon atoms present in the backbone of the ethylene-based polymer composition; a zero shear viscosity ratio (ZSVR) in the range from 1 to less than 2; a density in the range of 0.930 to 0.970 g/cm3, a melt index (12) in the range of from 15 to 30 or from 10 to 50 g/10 minutes, a molecular weight distribution (Mw/Mn) in the range of from 2 to 3.5, and a molecular weight distribution (Mz/Mw) in the range of from less than 2.

Abstract: The instant invention provides a polymerization process for producing ethylene based polymers.

Abstract: A composition comprising an ethylene-based polymer is made by a process comprising the steps of: (A) contacting under first polymerization conditions at least ethylene and at least one molecular catalyst to form a first ethylene-based polymer, and (B) contacting under second polymerization conditions the first ethylene-based polymer of (A) with at least additional ethylene and a carbon-carbon free radical initiator of Structure (I): wherein R1, R2, R3, R4, R5 and R6 are each, independently, hydrogen or a hydrocarbyl group and wherein, optionally, two or more R groups (R1, R2, R3, R4, R5 and R6) form a ring structure, with the proviso that at least one of R2 and R5, and at least one of R3 and R6 is a hydrocarbyl group of at least two carbon atoms, to form the composition.

Abstract: The invention provides a composition comprising at least the following: a) a first composition comprising at least one first ethylene-based polymer, formed by high pressure, free-radical polymerization, and wherein the first composition comprises the following properties: a melt index (I2) from 1.0 to 15.0 g/10 min, and density from 0.910 to 0.940 g/cc; b) a second composition comprising at least one second ethylene-based polymer, and wherein the second composition comprises the following properties; a melt index (I2) from 1.0 to 1000 g/10 min, a density greater than 0.940 g/cc; wherein the composition comprises the following properties: melt index (I2) from 2.0 to 20.0 g/10 min, and a density from 0.915 to 0.940 g/cc; and wherein the first composition is present in an amount from 65 to 95 wt %, based on the weight of the composition.

Abstract: The instant invention provides a polyethylene blend-composition suitable for blown films, and films made therefrom. The polyethylene blend-composition suitable for blown films according to the present invention comprises the melt blending product of: (a) from 0.5 to 4 percent by weight of a low density polyethylene having a density in the range of from 0.915 to 0.935 g/cm3, and a melt index (I2) in the range of from greater than 0.8 to less than or equal to 5 g/10 minutes, and a molecular weight distribution (Mw/Mn) in the range of from 6 to 10; (b) 90 percent or greater by weight of a linear low density polyethylene composition has a density in the range of 0.900 to 0.935 g/cm3, a molecular weight distribution (Mw/Mn) in the range of 1.5 to 4.5, a melt index (I2) in the range of 0.1 to 5 g/10 minutes, a molecular weight distribution (Mz/Mw) in the range of less than 3, vinyl unsaturation of less than 0.

Abstract: Polyethylene-based compositions are provided that can be used, for example, in the formation of film layers. In one aspect, a composition comprises (a) a first linear low density polyethylene having a density of 0.900 to 0.915 g/cm3 and a melt index (I2) of 5.0 to 25 g/10 min, wherein the linear low density polyethylene is a blend of at least two components: (i) 20-40% by weight of a second linear low density polyethylene, wherein the second linear low density polyethylene is a homogeneously branched ethylene/?-olefin interpolymer having a density of 0.870-0.895 g/cm3 and a melt index (I2) of 2.0-6.0 g/10 min; and (ii) 60-80% by weight of a third linear low density polyethylene, wherein the density of the third linear low density polyethylene is at least 0.02 g/cm3 greater than the density of the second linear low density polyethylene and wherein the melt index (I2) of the third linear low density polyethylene is at least twice the melt index (I2) of the second linear low density polyethylene.

Abstract: An ethylene/?-olefin copolymer comprising units derived from ethylene; and units derived from at least one ?-olefin; wherein the ethylene/?-olefin copolymer has a density in the range of from 0.90 to 0.94 g/cc; a melt index (I2) in the range of from 0.05 to 50 dg/min; an Mw/Mn of from 3 to 5; and from 300 to 500 vinyl unsaturations per 1,000,000 carbon atoms in the ethylene/?-olefin copolymer is provided. Also provided is a process for producing an ethylene/?-olefin copolymer comprising: (1) polymerizing ethylene and one or more ?-olefins in a polymerization reactor; (2) thereby producing an enhanced melt strength ethylene/?-olefin copolymer having from 300 to 500 vinyl unsaturation units per 1,000,000 carbon atoms, a density in the range of from 0.90 to 0.94 g/cc; a melt index (I2) in the range of from 0.05 to 50 dg/min; and a Mw/Mn of from 3 to 5.