Abstract: Films with excellent machine direction (MD) tear properties comprise at least one layer made from a polymer comprising: (A) at least 50 weight percent (wt %) propylene; and (B) at least 5 wt % ethylene and/or one or more unsaturated comonomers. Representative of component (B) unsatuarated comonomers are the C4-20 ?-olefins, C4-20 dienes, styrenic compounds, and the like. Preferably, the film has at least one of a (i) haze value of less than about 10, (ii) 45 degree gloss of greater than about 65, and (iii) dart value of greater than about 100 g/mil. In one preferred embodiment, the layer comprises a compolymer characterized as having at least one of the following properties: (i) 13C NMR peaks corresponding to a regio-error at about 14.6 and about 15.7 ppm, the peaks of about equal intensity, (ii) a B-value greater than about 1.4 when the comonomer content, i.e.

Abstract: The subject invention provides a film having at least one layer comprising an interpolymer of ethylene and at least on comonomer selected from the group consisting of C3-C20 ?-olefins, dienes, and cycloalkenes, wherein the interpolymer is characterized as having a high degree of processability, good optical performance, and good mechanical properties. The subject invention further provides film fabrication processes and polymer compositions which are useful in preparing the subject films.

Abstract: Films with excellent machine direction (MD) tear properties comprise at least one layer made from a polymer comprising: (A) at least 50 weight percent (wt %) propylene; and (B) at least 5 wt % ethylene and/or one or more unsaturated comonomers. Representative of component (B) unsatuarated comonomers are the C4-20 ?-olefins, C4-20 dienes, styrenic compounds, and the like. Preferably, the film has at least one of a (i) haze value of less than about 10, (ii) 45 degree gloss of greater than about 65, and (iii) dart value of greater than about 100 g/mil. In one preferred embodiment, the layer comprises a compolymer characterized as having at least one of the following properties: (i) 13C NMR peaks corresponding to a regio-error at about 14.6 and about 15.7 ppm, the peaks of about equal intensity, (ii) a B-value greater than about 1.4 when the comonomer content, i.e.

Abstract: The present invention includes a blend composition comprising at least one coupled propylene polymer and at least 55 weight percent of at least one ethylene polymer, based on the total weight of the coupled propylene polymer and the ethylene polymer. The invention also includes methods for making the coupled propylene polymer and methods for making the blend composition. The present invention further includes films made from the blend composition.

Abstract: Films with excellent machine direction (MD) tear properties comprise at least one layer made from a polymer comprising: (A) at least 50 weight percent (wt %) propylene; and (B) at least 5 wt % ethylene and/or one or more unsaturated comonomers. Representative of component (B) unsatuarated comonomers are the C4-20 ?-olefins, C4-20 dienes, styrenic compounds, and the like. Preferably, the film has at least one of a (i) haze value of less than about 10, (ii) 45 degree gloss of greater than about 65, and (iii) dart value of greater than about 100 g/mil. In one preferred embodiment, the layer comprises a compolymer characterized as having at least one of the following properties: (i) 13C NMR peaks corresponding to a regio-error at about 14.6 and about 15.7 ppm, the peaks of about equal intensity, (ii) a B-value greater than about 1.4 when the comonomer content, i.e.

Abstract: Films with excellent machine direction (MD) tear properties comprise at least one layer made from a polymer comprising: (A) at least 50 weight percent (wt %) propylene; and (B) at least 5 wt % ethylene and/or one or more unsaturated comonomers. Representative of component (B) unsatuarated comonomers are the C4-20 ? -olefins, C4-20 dienes, styrenic compounds, and the like. Preferably, the film has at least one of a (i) haze value of less than about 10, (ii) 45 degree gloss of greater than about 65, and (iii) dart value of greater than about 100 g/mil. In one preferred embodiment, the layer comprises a compolymer characterized as having at least one of the following properties: (i) 13C NMR peaks corresponding to a regio-error at about 14.6 and about 15.7 ppm, the peaks of about equal intensity, (ii) a B-value greater than about 1.4 when the comonomer content, i.e.

Abstract: A unique thermoplastic olefin composition having: (a) at least 40 percent by weight of a propylene-alpha olefin copolymer based on the total weight of polymers in the composition, the propylene-alpha olefin copolymer having at least 60 percent by weight units derived from propylene, at least 6 percent by weight units derived from an alpha olefin, a moleculare weight distribution less than 3.5, and a broad composition distribution; and (b) at least 20 percent by weight of a polypropylene based on the total weight of polymers in the composition, the polypropylene having at least 93 percent by weight units derived from propylene, a molecular weight distribution of greater than 3.5, a heat of fusion greater than the heat of fusion exhibited by the propylene-alpha olefin copolymer, and a melting point Tmax of at least 120° C.

Abstract: Films with excellent machine direction (MD) tear properties comprise at least one layer made from a polymer comprising:

Abstract: The present invention includes a blend composition comprising at least one coupled propylene polymer and at least 55 weight percent of at least one ethylene polymer, based on the total weight of the coupled propylene polymer and the ethylene polymer. The invention also includes methods for making the coupled propylene polymer and methods for making the blend composition. The present invention further includes films made from the blend composition.

Abstract: Films with excellent machine direction (MD) tear properties comprise at least one layer made from a polymer comprising:

Abstract: The present invention includes a coextruded film having at least two layers. The first layer contains a coupled propylene polymer and the second layer contains an in-reactor blend of a linear low density polyethylene fraction and a substantially linear polyethylene fraction. Alternatively, the second layer may include a homogeneously branched linear polyethylene. Preferably, the first layer makes up about 50 weight percent or less of the overall coextruded film structure. The first layer may also contain a polyethylene, such as a linear low density polyethylene, a low density polyethylene, a high density polyethylene, substantially linear polyethylene, a homogeneously branched linear polyethylene, an in-reactor blend of linear low density polyethylene and a substantially linear polyethyelene, and blends thereof.

Abstract: The invention includes a process of preparing a coupled polymer characterized by heating an admixture containing (1) at least one ethylene polymer or blend of ethylene polymers having a density of at least about 0.89 g/mL and less than about 0.935 g/mL and a comonomer content between about 0.5 and 50 weight percent of an alpha olefin having greater than 2 and less than 20 carbon atoms per molecule and (2) a coupling amount of at least one poly(sulfonyl azide) to at least the decomposition temperature of the poly(sulfonyl azide) for a period sufficient for decomposition of at least about 80 weight percent of the poly(sulfonyl azide) and sufficient to result in a coupled polymer. The amount of poly(sulfonyl azide) is preferably from about 0.01 to about 5 weight percent of polymers in the admixture. The invention also includes any composition which is the product of any of the processes of the invention and articles made from those compositions, particularly any film of any composition of the invention.

Abstract: The subject invention provides a film having at least one layer comprising an interpolymer of ethylene and at least on comonomer selected from the group consisting of C3-C20 &agr;-olefins, dienes, and cycloalkenes, wherein the interpolymer is characterized as having a high degree of processability, good optical performance, and good mechanical properties. The subject invention further provides film fabrication processes and polymer compositions which are useful in preparing the subject films.

Abstract: The subject invention provides a film having at least one layer comprising an interpolymer of ethylene and at least one comonomer selected from the group consisting of C3-C20 &agr;-olefins, dienes, and cycloalkenes, wherein the interpolymer is characteried as having a high degree of processability good optical performance, and good mechanical properties. The subject invention further provides film fabrication processes and polymer compositions which are useful in preparing the subject films.

Abstract: The present invention includes a composition comprising (a) at least one propylene polymer coupled by reaction with a coupling amount of poly(sulfonyl azide) sufficient to increase the melt strength of the propylene polymer before coupling at least about 1.5 fold as compared with the resulting coupled propylene polymer; and (b) at least one ethylene polymer wherein the ethylene polymer is present in an amount sufficient to improve film mechanical properties of tear resistance in either the machine direction (MD) and cross direction (CD) as measured by the Elmendorf Tear method (ASTM D-1922) or dart impact strength as measured by the procedure of ASTM D-1709 or a modified method thereof in which the height from which the dart is dropped is decreased from 26″ to 10.5″ (0.66 m to 0.27 m) as compared with a film formed in the same manner using the coupled propylene polymer of (a) alone.

Abstract: The present invention pertains to a continuous process and polymerization system characterized by separate injection of catalyst and make-up feed, an ethylene interpolymer composition characterized as having broad molecular weight distribution (MWD) and optimized compositional uniformity, a process for making such a composition and a fabricated article made from such composition. The novel composition is characterized as having a melt flow ratio, I10/I2, from 8 to 30, a Mw/Mn of greater than 4 as determined by gel permeation chromatography, a melt index, I2, from 0.01 to 1000 grams/10 minutes, preferably greater that 0.1 to 10 grams/10 minutes, and a density less than 0.945 g/cm3. The novel composition exhibits good processibility and improved toughness properties, especially excellent film tear and impact resistance, and is particularly well-suited for use in applications such as high performance trash can liners and heavy duty shipping bags.

Abstract: The polymer recovery capacity of solution polymerization units is increased by flashing a polymer solution exiting olefin polymerization reactors to produce a concentrated polymer solution having a reduced temperate and a solids content from 10 percent to 40 percent by weight. Flashing of the polymer solution preferably occurs at a temperature at least 20° C. higher than the crystallization temperature of the concentrated polymer solution The concentrated polymer solution can be prepared adiabatically and can be subsequently finished in conventional polymer recovery units without increasing the risk of gel formation.

Abstract: The present invention pertains to a multilayer blown film structure having a blended polypropylene layer and at least one polyethylene sealant layer. In particular, the invention relates to a multilayer blown film comprising a non-sealant layer made from a propylene-rich polypropylene polymer blended with at least one ethylene-rich ethylene interpolymer and a sealant layer made from at least one ethylene interpolymer, wherein the ethylene-rich ethylene interpolymer comprises ethylene interpolymerized with at least one other comonomer other than propylene. The novel multilayer film structure exhibits excellent interlayer adhesion (especially at the blended non-sealant/sealant interface when adjacent to one another) and toughness (e.g. excellent trouser tear) with acceptable optical properties and surprising sealing properties.

Abstract: The present invention includes a coextruded film having at least two layers. The first layer contains a coupled propylene polymer and the second layer contains an in-reactor blend of a linear low density polyethylene fraction and a substantially linear polyethylene fraction. Alternatively, the second layer may include a homogeneously branched linear polyethylene. Preferably, the first layer makes up about 50 weight percent or less of the overall coextruded film structure. The first layer may also contain a polyethylene, such as a linear low density polyethylene, a low density polyethylene, a high density polyethylene, substantially linear polyethylene, a homogeneously branched linear polyethylene, an in-reactor blend of linear low density polyethylene and a substantially linear polyethyelene, and blends thereof.

Abstract: The present invention pertains to a continuous process and polymerization system characterized by separate injection of catalyst and make-up feed, an ethylene interpolymer composition characterized as having broad molecular weight distribution (MWD) and optimized compositional uniformity, a process for making such a compostion and a fabricated article made from such composition. The novel composition is characterized as having a melt flow ratio, I10/I2, from 8 to 30, a Mw/Mn of greater than 4 as determined by gel permeation chromatography, a melt index, I2, from 0.01 to 1000 grams/10 minutes, preferably greater that 0.1 to 10 grams/10 minutes, and a density less than 0.945 g/cm3. The novel composition exhibits good processibility and improved toughness properties, especially excellent film tear and impact resistance, and is particularly well-suited for use in applications such as high performance trash can liners and heavy duty shipping bags.