A bimodal polyethylene is provided. The bimodal polyethylene may include a high molecular weight portion having a weight average molecular weight (M.sub.w) of 100,000 g/mol to 1,000,000 g/mol and a low molecular weight portion having a M.sub.w of 10,000 g/mol to 80,000 g/mol. Polymer extrudates, such as cable-coatings and/or wire-coatings and films, including the bimodal polyethylene as well as methods of making the polymer extrudates are also provided.

A polyethylene homopolymer composition comprises: a first ethylene homopolymer having a density, d.sup.1 of from 0.943 to 0.975 g/cm.sup.3, a melt index, I.sub.2.sup.1 of from 0.01 to 10 g/10 min, and a molecular weight distribution, Mw/Mn of less than 3.0; and a second ethylene homopolymer having a density, d.sup.2 of from 0.950 to 0.985 g/cm.sup.3, a melt index, I.sub.2.sup.2 of at least 500 g/10 min, and a molecular weight distribution, M.sub.w/M.sub.n of less than 3.0; wherein the ratio of the melt index, I.sub.2.sup.2 of the second ethylene homopolymer to the melt index, I.sub.2.sup.1 of the first ethylene homopolymer is at least 50. The polyethylene homopolymer compositions which may be nucleated have a weight average molecular weight, M.sub.w of ≤75,000, a high load melt index, I.sub.21 of at least 200 g/10 min, a molecular weight distribution, M.sub.w/M.sub.n of from 4.0 to 12.0 and may be usefully employed in molding applications, such as, for example, in compression molded closures.

A polyethylene homopolymer composition comprises: a first ethylene homopolymer having a density, d.sup.1 of from 0.943 to 0.975 g/cm.sup.3, a melt index, I.sub.2.sup.1 of from 0.01 to 10 g/10 min, and a molecular weight distribution, Mw/Mn of less than 3.0; and a second ethylene homopolymer having a density, d.sup.2 of from 0.950 to 0.985 g/cm.sup.3, a melt index, I.sub.2.sup.2 of at least 500 g/10 min, and a molecular weight distribution, M.sub.w/M.sub.n of less than 3.0; wherein the ratio of the melt index, I.sub.2.sup.2 of the second ethylene homopolymer to the melt index, I.sub.2.sup.1 of the first ethylene homopolymer is at least 50. The polyethylene homopolymer compositions which may be nucleated have a weight average molecular weight, M.sub.w of ≤75,000, a high load melt index, I.sub.21 of at least 200 g/10 min, a molecular weight distribution, M.sub.w/M.sub.n of from 4.0 to 12.0 and may be usefully employed in molding applications, such as, for example, in compression molded closures.

The disclosure provides an ethylene copolymer having a density of from 0.912 g/cm.sup.3 to 0.925 g/cm.sup.3, a melt flow ratio (I.sub.21/I.sub.2) of from 20 to 30, and a normal comonomer distribution profile in a GPC-FTIR analysis, wherein the normal comonomer distribution profile has a slope of from −3.5 to −7.5, where the slope is defined as the number of short chain branches per 1000 carbons at a molecular weight of 300,000 minus the number of short chain branches per 1000 carbons at a molecular weight of 30,000. The ethylene copolymers have improved bulk density and when made into film, provide good physical properties.

The disclosure provides an ethylene copolymer having a density of from 0.912 g/cm.sup.3 to 0.925 g/cm.sup.3, a melt flow ratio (I.sub.21/I.sub.2) of from 20 to 30, and a normal comonomer distribution profile in a GPC-FTIR analysis, wherein the normal comonomer distribution profile has a slope of from −3.5 to −7.5, where the slope is defined as the number of short chain branches per 1000 carbons at a molecular weight of 300,000 minus the number of short chain branches per 1000 carbons at a molecular weight of 30,000. The ethylene copolymers have improved bulk density and when made into film, provide good physical properties.

In various embodiments, a polyethylene formulation has a density of greater than 0.940 g/cm.sup.3 when measured according to ASTM D792, and a high load melt index (I.sub.21) of 1.0 g/10 min to 10.0 g/10 min when measured according to ASTM D1238 at 190° C. and a 21.6 kg load. Moreover, the polyethylene formulation has a peak molecular weight (M.sub.p(GPC)) of less than 50,000 g/mol, a number average molecular weight (M.sub.n(GPC)) of less than 30,000 g/mol, and a weight fraction (w1) of molecular weight (MW) less than 10,000 g/mol of less than or equal to 10.5 wt %, as determined by Gel Permeation Chromatography (GPC). Articles made from the polyethylene formulation, such as articles made by blow molding processes are also provided.

In various embodiments, a polyethylene formulation has a density of greater than 0.940 g/cm.sup.3 when measured according to ASTM D792, and a high load melt index (I.sub.21) of 1.0 g/10 min to 10.0 g/10 min when measured according to ASTM D1238 at 190° C. and a 21.6 kg load. Moreover, the polyethylene formulation has a peak molecular weight (M.sub.p(GPC)) of less than 50,000 g/mol, a number average molecular weight (M.sub.n(GPC)) of less than 30,000 g/mol, and a weight fraction (w1) of molecular weight (MW) less than 10,000 g/mol of less than or equal to 10.5 wt %, as determined by Gel Permeation Chromatography (GPC). Articles made from the polyethylene formulation, such as articles made by blow molding processes are also provided.

A unimodal ethylene-co-1-hexene copolymer that, when in melted form at 190 degrees Celsius, is characterized by a unique melt property space defined by combination of melt elasticity and complex viscosity ratio (shear thinning) properties. A blown film consisting essentially of the unimodal ethylene-co-1-hexene copolymer. A method of synthesizing the unimodal ethylene-co-1-hexene copolymer. A method of making the blown film. A manufactured article comprising the unimodal ethylene-co-1-hexene copolymer.

A unimodal ethylene-co-1-hexene copolymer that, when in melted form at 190 degrees Celsius, is characterized by a unique melt property space defined by combination of melt elasticity and complex viscosity ratio (shear thinning) properties. A blown film consisting essentially of the unimodal ethylene-co-1-hexene copolymer. A method of synthesizing the unimodal ethylene-co-1-hexene copolymer. A method of making the blown film. A manufactured article comprising the unimodal ethylene-co-1-hexene copolymer.

This disclosure relates to ethylene interpolymer compositions and films prepared therefrom. Specifically: ethylene interpolymer products having: a dimensionless Long Chain Branching Factor, LCBF, greater than or equal to 0.001; a residual catalytic metal of from ≥0.03 to ≤5 ppm of hafnium, and; a dimensionless unsaturation ratio, UR, of from ≥−0.40 to ≤0.06, wherein UR is defined by the following relationship; UR=(SC.sup.U−T.sup.U)/T.sup.U, where SC.sup.U is the amount of a side chain unsaturation per 100 carbons and T.sup.U is amount of a terminal unsaturation per 100 carbons, in said ethylene interpolymer product. The disclosed ethylene interpolymer products have a melt index from about 0.3 to about 500 dg/minute, a density from about 0.855 to about 0.975 g/cc, a polydispersity (M.sub.w/M.sub.n) from about 1.7 to about 25 and a Composition Distribution Breadth Index (CDBI.sub.50) from about 1% to about 98%.