ETHYLENE INTERPOLYMER PRODUCTS HAVING INTERMEDIATE BRANCHING

This disclosure relates to ethylene interpolymer product having intermediate branching. Intermediate branching was defined as branching that was longer than the branch length due to comonomer and shorter than the entanglement molecular weight (Me). Intermediately branched ethylene interpolymer products were produced in a continuous solution polymerization process employing an intermediate branching catalyst formulation. Intermediately branched ethylene interpolymer products were characterized by a Non-Comonomer Index Distribution (NCIDi), a melt index from 0.3 to 500 dg/minute, a density from 0.858 to 0.965 g/cm3, a polydispersity (Mw/Mn) from about 2 to about 25 and a CDBI50 from about 10% to about 98%. A method based on triple detection cross fractionation chromatography (3D-CFC) was disclosed to measure NCIDi.

MEANS FOR INCREASING THE MOLECULAR WEIGHT AND DECREASING THE DENSITY OF ETHYLENE INTERPOLYMERS EMPLOYING HOMOGENEOUS AND HETEROGENEOUS CATALYST FORMULATIONS

A continuous solution polymerization process is disclosed wherein at least two catalyst formulations are employed. A first homogeneous catalyst formulation is employed in a first reactor to produce a first ethylene interpolymer and a first heterogeneous catalyst formulation is employed in a second reactor to produce a second ethylene interpolymer. Optionally a third ethylene interpolymer is formed in a third reactor. The resulting ethylene interpolymer products possess desirable properties in a variety of end use applications, for example in film applications. A means for increasing the molecular weight of the first ethylene interpolymer is disclosed and/or a means for increasing the temperature of the first reactor, relative to a third homogeneous catalyst formulation. A means for reducing the (.alpha.-olefin/ethylene) weight ratio in the first reactor is disclosed and/or reducing the density of the first ethylene interpolymer, relative to a third homogeneous catalyst formulation.

MANUFACTURE OF PRODUCTS OF ETHYLENE INTERPOLYMER

Un proceso continuo de polimerización en solución mejorado en donde: se inyectan solvente de proceso, etileno, co-monómeros opcionales, hidrógeno opcional, y una formulación de catalizador de metaloceno en puente en un primer reactor para formar un primer interpolímero de etileno. Opcionalmente, se inyectan solvente de proceso, etileno, co-monómeros opcionales, hidrógeno opcional, y una formulación de catalizador de metaloceno en puente en un segundo reactor para formar un segundo interpolímero de etileno. El primer y el segundo reactores pueden estar configurados en modo de operación en serie o en paralelo. Opcionalmente, se forma un tercer interpolímero de etileno en un tercer reactor, en donde se emplea una formulación de catalizador homogénea o una formulación de catalizador heterogénea. En solución, el primer interpolímero de etileno, el segundo interpolímero de etileno opcional y el tercer interpolímero de etileno opcional se combinan, el catalizador se desactiva, la solución es opcionalmente pasivada y, después de un proceso de separación de fases, se recupera un producto de interpolímero de etileno. An improved continuous solution polymerization process wherein: process solvent, ethylene, optional comonomers, optional hydrogen, and a bridged metallocene catalyst formulation are injected into a first reactor to form a first ethylene interpolymer. Optionally, process solvent, ethylene, optional comonomers, optional hydrogen, and a bridged metallocene catalyst formulation are injected into a second reactor to form a second ethylene interpolymer. The first and second reactors can be configured in series or parallel mode of operation. Optionally, a third ethylene interpolymer is formed in a third reactor, where a homogeneous catalyst formulation or a heterogeneous catalyst formulation is employed. In solution, the first ethylene interpolymer, the second optional ethylene interpolymer, and the third optional ethylene interpolymer are combined, the catalyst is ...

Multi reactor solution polymerization

This disclosure relates to a continuous solution three reactor polymerization process. Process solvent, ethylene, optional comonomers, optional hydrogen and a single site catalyst system are injected into a first and second reactor configured in parallel to one another. A third reactor receives effluent from the first reactor, the second reactor, or a combination of the first and second reactors. Fresh monomer is feed to the third reactor for further polymerization and to give a final polyethylene product.

SOLUTION POLYMERIZATION IN THE REACTOR MANIFOLD

Se divulga un proceso de polimerización en solución continuo en tres reactores; donde el solvente del proceso, etileno, comonómeros opcionales, hidrógeno opcional y un sistema catalizador de sitio único se inyectan en un primer y un segundo reactores configurados en paralelo entre sí; un tercer reactor recibe el efluente del primer reactor, del segundo reactor o una combinación del primer y segundo reactores; el monómero fresco se alimenta al tercer reactor para una polimerización y para obtener un producto de polietileno final. A continuous solution polymerization process in three reactors is disclosed; where the process solvent, ethylene, optional comonomers, optional hydrogen and a single site catalyst system are injected into a first and second reactors configured in parallel with each other; a third reactor receives the effluent from the first reactor, the second reactor or a combination of the first and second reactors; The fresh monomer is fed to the third reactor for polymerization and to obtain a final polyethylene product.

AN IMPROVED PROCESS TO MANUFACTURE ETHYLENE INTERPOLYMER PRODUCTS

This disclosure relates to an improved solution polymerization process wherein the molecular weight of an ethylene interpolymer product can be increased relative to a comparative process; or at constant ethylene interpolymer molecular weight the improved process can be operated at higher polymerization temperature relative to the comparative process. This disclosure also relates to an improved solution polymerization process wherein an ethylene interpolymer product at target density can be produced at a lower [.alpha.-olefin/ethylene] weight ratio in the reactor, relative to a comparative process. Process solvent, ethylene, optional comonomers, optional hydrogen and a bridged metallocene catalyst formulation are injected into one or more reactors to form the ethylene interpolymer product. The catalyst is subsequently deactivated, the solution is optionally passivated and following a phase separation process the ethylene interpolymer product is recovered.

MEANS FOR INCREASING THE WEIGHT AND REDUCING THE HULK K DENSITY OF THE ETHYLENE INTERPOLYMER BY EMPLOYING FORMULATIONS AND NON HETEROGENEOUS CATALYSTS

Un proceso continuo de polimerización en solución en el que se emplean por lo menos dos formulaciones de catalizadores. Se emplea una primera formulación de catalizador homogéneo en un primer reactor para producir un primer interpolímero de etileno y se emplea una primera formulación de catalizador heterogéneo en un segundo reactor para producir un segundo interpolímero de etileno. Opcionalmente, en un tercer reactor se forma un tercer interpolímero de etileno. Los productos de interpolímeros de etileno que se obtienen como resultado poseen propiedades deseables en una variedad de aplicaciones de uso final, por ejemplo en aplicaciones en películas. Se divulga un medio para incrementar el peso molecular del primer interpolímero de etileno y/o un medio para incrementar la temperatura del primer reactor, con relación a una tercera formulación de catalizador homogéneo. Se divulga un medio para reducir la proporción en peso de (a-olefina / etileno) en el primer reactor y/o reducir la densidad del primer interpolímero de etileno, con relación a una tercera formulación de catalizador homogéneo. A continuous solution polymerization process in which at least two catalyst formulations are employed. A first homogeneous catalyst formulation is used in a first reactor to produce a first ethylene interpolymer and a first heterogeneous catalyst formulation is used in a second reactor to produce a second ethylene interpolymer. Optionally, a third ethylene interpolymer is formed in a third reactor. The ethylene interpolymer products that are obtained as a result possess desirable properties in a variety of end-use applications, for example in film applications. A means for increasing the molecular weight of the first ethylene interpolymer and / or a means for increasing the temperature of the first reactor in relation to a third homogeneous catalyst formulation is disclosed. A means for reducing the weight ratio of (a-olefin / ethylene) in the first reactor and / or reducing the ...

ETHYLENE INTERPOLYMER PRODUCTS AND FILMS

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 = (SCu-Tu)/Tu, where SCu is the amount of a side chain unsaturation per 100 carbons and Tu 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 (Mw/Mn) from about 1.7 to about 25 and a Composition Distribution Breadth Index (CDBI50) from about 1% to about 98%.

MULTI REACTOR SOLUTION POLYMERIZATION, POLYETHYLENE AND POLYETHYLENE FILM

This disclosure relates to a continuous solution three reactor polymerization process. Process solvent, ethylene, optional comonomers, optional hydrogen and a single site catalyst system are injected into a first and second reactor configured in parallel to one another. A third reactor receives effluent from the first reactor, the second reactor, or a combination of the first and second reactors. Fresh monomer is feed to the third reactor for further polymerization and to give a final polyethylene product.

SOLUTION POLYMERIZATION IN MULTIPLE REACTORS, POLYETHYLENE AND POLYETHYLENE FILMS

Esta divulgación se relaciona con un proceso de polimerización en solución continuo en tres reactores. El solvente del proceso, etileno, comonómeros opcionales, hidrógeno opcional y un sistema catalizador de sitio único se inyectan en un primer y un segundo reactores configurados en paralelo entre sí. Un tercer reactor recibe el efluente del primer reactor, del segundo reactor o una combinación del primer y segundo reactores. Se alimenta el monómeros frescos al tercer reactor para una polimerización y para obtener un producto de polietileno final. This disclosure relates to a continuous solution polymerization process in three reactors. The process solvent, ethylene, optional comonomers, optional hydrogen and a single site catalyst system are injected into a first and second reactors configured in parallel with each other. A third reactor receives the effluent from the first reactor, the second reactor or a combination of the first and second reactors. The fresh monomers are fed to the third reactor for polymerization and to obtain a final polyethylene product.

Means for increasing the molecular weight and decreasing the density of ethylene interpolymers employing mixed homogeneous catalyst formulations

A continuous solution polymerization process is disclosed wherein at least two homogeneous catalyst formulations are employed. A first homogeneous catalyst formulation is employed in a first reactor to produce a first ethylene interpolymer and a second homogeneous catalyst formulation is employed in a second reactor to produce a second ethylene interpolymer. Optionally a third ethylene interpolymer is formed in a third reactor. The resulting ethylene interpolymer products possess desirable properties in a variety of end use applications, for example in film applications. A means for increasing the molecular weight of the first ethylene interpolymer is disclosed and/or a means for increasing the temperature of the first reactor, relative to the third homogeneous catalyst formulation. A means for reducing the (α-olefin/ethylene) weight ratio in the first reactor is disclosed and/or reducing the density of the first ethylene interpolymer, relative to the third homogeneous catalyst formulation.

AN IMPROVED PROCESS TO MANUFACTURE ETHYLENE INTERPOLYMER PRODUCTS

This disclosure relates to an improved solution polymerization process wherein the molecular weight of an ethylene interpolymer product can be increased relative to a comparative process; or at constant ethylene interpolymer molecular weight the improved process can be operated at higher polymerization temperature relative to the comparative process. This disclosure also relates to an improved solution polymerization process wherein an ethylene interpolymer product at target density can be produced at a lower [.alpha.-olefin/ethylene] weight ratio in the reactor, relative to a comparative process. Process solvent, ethylene, optional comonomers, optional hydrogen and a bridged metallocene catalyst formulation are injected into one or more reactors to form the ethylene interpolymer product. The catalyst is subsequently deactivated, the solution is optionally passivated and following a phase separation process the ethylene interpolymer product is recovered.

MULTI REACTOR SOLUTION POLYMERIZATION

This disclosure relates to a continuous solution three reactor polymerization process. Process solvent, ethylene, optional comonomers, optional hydrogen and a single site catalyst system are injected into a first and second reactor configured in parallel to one another. A third reactor receives effluent from the first reactor, the second reactor, or a combination of the first and second reactors. Fresh monomer is feed to the third reactor for further polymerization and to give a final polyethylene product.

An improved process to manufacture ethylene interpolymer products

This disclosure relates to an improved solution polymerization process wherein the molecular weight of an ethylene interpolymer product can be increased relative to a comparative process; or at constant ethylene interpolymer molecular weight the improved process can be operated at higher polymerization temperature relative to the comparative process. This disclosure also relates to an improved solution polymerization process wherein an ethylene interpolymer product at target density can be produced at a lower [a-olefin/ethylene] weight ratio in the reactor, relative to a comparative process. Process solvent, ethylene, optional comonomers, optional hydrogen and a bridged metallocene catalyst formulation are injected into one or more reactors to form the ethylene interpolymer product. The catalyst is subsequently deactivated, the solution is optionally passivated and following a phase separation process the ethylene interpolymer product is recovered.

Means for increasing the molecular weight and decreasing the density of ethylene interpolymers employing homogeneous and heterogeneous catalyst formulations

A continuous solution polymerization process is disclosed wherein at least two catalyst formulations are employed. A first homogeneous catalyst formulation is employed in a first reactor to produce a first ethylene interpolymer and a first heterogeneous catalyst formulation is employed in a second reactor to produce a second ethylene interpolymer. Optionally a third ethylene interpolymer is formed in a third reactor. The resulting ethylene interpolymer products possess desirable properties in a variety of end use applications, for example in film applicationΩs. A means for increasing the molecular weight of the first ethylene interpolymer is disclosed and/or a means for increasing the temperature of the first reactor, relative to a third homogeneous catalyst formulation. A means for reducing the (α-olefin/ethylene) weight ratio in the first reactor is disclosed and/or reducing the density of the first ethylene interpolymer, relative to a third homogeneous catalyst formulαation.

Ethylene interpolymer products and films

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

MANUFACTURING ETHYLENE INTERPOLYMER PRODUCTS AT HIGHER PRODUCTION RATE

This disclosure relates to an improved continuous solution polymerization process wherein production rate is increased. Process solvent, ethylene, optional comonomers, optional hydrogen and a bridged metallocene catalyst formulation are injected into a first reactor to form a first ethylene interpolymer. Optionally, process solvent, ethylene, optional comonomers, optional hydrogen and a bridged metallocene catalyst formulation are injected into a second reactor forming a second ethylene interpolymer. The first and second reactors may be configured in series or parallel modes of operation. Optionally, a third ethylene interpolymer is formed in a third reactor, wherein a homogeneous catalyst formulation or a heterogeneous catalyst formulation is employed. In solution, the first, optional second and optional third ethylene interpolymers are combined, the catalyst is deactivated, the solution is optionally passivated and following a phase separation process an ethylene interpolymer product is recovered.

MEANS FOR INCREASING THE MOLECULAR WEIGHT AND DECREASING THE DENSITY OF ETHYLENE INTERPOLYMERS EMPLOYING MIXED HOMOGENEOUS CATALYST FORMULATIONS

A continuous solution polymerization process is disclosed wherein at least two homogeneous catalyst formulations are employed. A first homogeneous catalyst formulation is employed in a first reactor to produce a first ethylene interpolymer and a second homogeneous catalyst formulation is employed in a second reactor to produce a second ethylene interpolymer. Optionally a third ethylene interpolymer is formed in a third reactor. The resulting ethylene interpolymer products possess desirable properties in a variety of end use applications, for example in film applications. A means for increasing the molecular weight of the first ethylene interpolymer is disclosed and/or a means for increasing the temperature of the first reactor, relative to the third homogeneous catalyst formulation. A means for reducing the (.alpha.-olefin/ethylene) weight ratio in the first reactor is disclosed and/or reducing the density of the first ethylene interpolymer, relative to the third homogeneous catalyst formulation ...

Means for increasing the molecular weight and decreasing the density of ethylene interpolymers employing homogeneous and heterogeneous catalyst formulations

A continuous solution polymerization process is disclosed wherein at least two catalyst formulations are employed. A first homogeneous catalyst formulation is employed in a first reactor to produce a first ethylene interpolymer and a first heterogeneous catalyst formulation is employed in a second reactor to produce a second ethylene interpolymer. Optionally a third ethylene interpolymer is formed in a third reactor. The resulting ethylene interpolymer products possess desirable properties in a variety of end use applications, for example in film applicationΩs. A means for increasing the molecular weight of the first ethylene interpolymer is disclosed and/or a means for increasing the temperature of the first reactor, relative to a third homogeneous catalyst formulation. A means for reducing the (α-olefin/ethylene) weight ratio in the first reactor is disclosed and/or reducing the density of the first ethylene interpolymer, relative to a third homogeneous catalyst formulαation.

Un proceso mejorado para fabricar productos de interpolímero de etileno.

ESTA DIVULGACIÓN SE REFIERE A UN PROCESO MEJORADO DE POLIMERIZACIÓN EN SOLUCIÓN EN DONDE EL PESO MOLECULAR DE UN PRODUCTO DE INTERPOLÍMERO DE ETILENO SE PUEDE AUMENTAR CON RESPECTO A UN PROCESO COMPARATIVO, O A PESO MOLECULAR CONSTANTE DE INTERPOLÍMERO DE ETILENO, EL PROCESO MEJORADO SE PUEDE OPERAR A UNA TEMPERATURA DE POLIMERIZACIÓN MÁS ALTA; EN RELACIÓN CON UN PROCESO COMPARATIVO. ESTA DIVULGACIÓN TAMBIÉN SE REFIERE A UN PROCESO MEJORADO DE POLIMERIZACIÓN EN SOLUCIÓN EN DONDE SE PUEDE PRODUCIR UN PRODUCTO DE INTERPOLÍMERO DE ETILENO A UNA DENSIDAD OBJETIVO A UNA RELACIÓN EN PESO [a-OLEFINA/ETILENO] MÁS BAJA EN EL REACTOR, EN RELACIÓN CON UN PROCESO COMPARATIVO. EN UNO O MÁS REACTORES SE INYECTAN: DISOLVENTE DE PROCESO, ETILENO, COMONÓMEROS OPCIONALES, HIDRÓGENO OPCIONAL Y UNA FORMULACIÓN DE CATALIZADOR DE METALOCENO PUENTEADO PARA FORMAR EL PRODUCTO DE INTERPOLÍMERO DE ETILENO. POSTERIORMENTE, EL CATALIZADOR SE DESACTIVA, LA SOLUCIÓN SE PASIVA OPCIONALMENTE Y, DESPUÉS DE UN PROCESO DE ...

Multi reactor solution polymerization

This disclosure relates to a continuous solution three reactor polymerization process. Process solvent, ethylene, optional comonomers, optional hydrogen and a single site catalyst system are injected into a first and second reactor configured in parallel to one another. A third reactor receives effluent from the first reactor, the second reactor, or a combination of the first and second reactors. Fresh monomer is feed to the third reactor for further polymerization and to give a final polyethylene product.

Means for increasing the molecular weight and decreasing the density of ethylene interpolymers employing homogeneous and heterogeneous catalyst formulations

A continuous solution polymerization process is disclosed wherein at least two catalyst formulations are employed. A first homogeneous catalyst formulation is employed in a first reactor to produce a first ethylene interpolymer and a first heterogeneous catalyst formulation is employed in a second reactor to produce a second ethylene interpolymer. Optionally a third ethylene interpolymer is formed in a third reactor. The resulting ethylene interpolymer products possess desirable properties in a variety of end use applications, for example in film applicationΩs. A means for increasing the molecular weight of the first ethylene interpolymer is disclosed and/or a means for increasing the temperature of the first reactor, relative to a third homogeneous catalyst formulation. A means for reducing the (α-olefin/ethylene) weight ratio in the first reactor is disclosed and/or reducing the density of the first ethylene interpolymer, relative to a third homogeneous catalyst formulαation.

ETHYLENE INTERPOLYMER PRODUCTS AND FILMS

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−T)/T, where SCis the amount of a side chain unsaturation per 100 carbons and Tis 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/M) from about 1.7 to about 25 and a Composition Distribution Breadth Index (CDBI) from about 1% to about 98%. 1. An ethylene interpolymer product comprising at least one ethylene interpolymer , wherein the ethylene interpolymer product comprises:a) a dimensionless Long Chain Branching Factor, LCBF, of greater than or equal to 0.001;b) a residual catalytic metal of from ≥0.03 to ≤5 ppm of hafnium, wherein the residual catalytic metal is measured using neutron activation; and {'br': None, 'sup': U', 'U', 'U, 'i': −T', 'T, 'UR=(SC)/'}, 'c) a dimensionless unsaturation ratio, UR, of from ≥−0.40 to ≤0.06, wherein the UR is defined by the following relationship;'}{'sup': U', 'U, 'wherein SCis the amount of a side chain unsaturation per 100 carbons and Tis the amount of a terminal unsaturation per 100 carbons in the ethylene interpolymer product, as determined by ASTM D3124-98 and ASTM D6248-98.'}2. The ethylene interpolymer product of claim 1 , wherein the ethylene interpolymer product comprises a first ethylene interpolymer claim 1 , a second ethylene interpolymer claim 1 , and optionally a third ethylene interpolymer.3. The ethylene interpolymer product of claim 1 , wherein the ethylene interpolymer product has a melt ...

Ethylene interpolymer products and films

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 U −T U )/T U , where SC U is the amount of a side chain unsaturation per 100 carbons and T 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 w /M n ) from about 1.7 to about 25 and a Composition Distribution Breadth Index (CDBI 50 ) from about 1% to about 98%.

Multi reactor solution polymerization, polyethylene and polyethylene film

This disclosure relates to a continuous solution three reactor polymerization process. Process solvent, ethylene, optional comonomers, optional hydrogen and a single site catalyst system are injected into a first and second reactor configured in parallel to one another. A third reactor receives effluent from the first reactor, the second reactor, or a combination of the first and second reactors. Fresh monomer is feed to the third reactor for further polymerization and to give a final polyethylene product.

Manufacturing ethylene interpolymer products at higher production rate

This disclosure relates to an improved continuous solution polymerization process wherein production rate is increased. Process solvent, ethylene, optional comonomers, optional hydrogen and a bridged metallocene catalyst formulation are injected into a first reactor to form a first ethylene interpolymer. Optionally, process solvent, ethylene, optional comonomers, optional hydrogen and a bridged metallocene catalyst formulation are injected into a second reactor forming a second ethylene interpolymer. The first and second reactors may be configured in series or parallel modes of operation. Optionally, a third ethylene interpolymer is formed in a third reactor, wherein a homogeneous catalyst formulation or a heterogeneous catalyst formulation is employed. In solution, the first, optional second and optional third ethylene interpolymers are combined, the catalyst is deactivated, the solution is optionally passivated and following a phase separation process an ethylene interpolymer product is recovered.

Means for increasing the molecular weight and decreasing the density employing mixed homogeneous catalyst formulations

A continuous solution polymerization process is disclosed wherein at least two homogeneous catalyst formulations are employed. A first homogeneous catalyst formulation is employed in a first reactor to produce a first ethylene interpolymer and a second homogeneous catalyst formulation is employed in a second reactor to produce a second ethylene interpolymer. Optionally a third ethylene interpolymer is formed in a third reactor. The resulting ethylene interpolymer products possess desirable properties in a variety of end use applications, for example in film applications. A means for increasing the molecular weight of the first ethylene interpolymer is disclosed and/or a means for increasing the temperature of the first reactor, relative to the third homogeneous catalyst formulation. A means for reducing the (α-olefin/ethylene) weight ratio in the first reactor is disclosed and/or reducing the density of the first ethylene interpolymer, relative to the third homogeneous catalyst formulation.

ETHYLENE INTERPOLYMER PRODUCTS AND FILMS

This disclosure relates to ethylene interpolymer compositions and films prepared therefrom. Specifically: ethylene interpolymer products having: a dimensionless nonlinear rheology network parameter, Δ, greater than or equal to 0.01, satisfying 0.01×(Z−50)≤Δ≤0.01×(Z−60)inequality wherein Z is a normalized molecular weight defined by

MULTI REACTOR SOLUTION POLYMERIZATION, POLYETHYLENE AND POLYETHYLENE FILM

This disclosure relates to a continuous solution three reactor polymerization process. Process solvent, ethylene, optional comonomers, optional hydrogen and a single site catalyst system are injected into a first and second reactor configured in parallel to one another. A third reactor receives effluent from the first reactor, the second reactor, or a combination of the first and second reactors. Fresh monomer is feed to the third reactor for further polymerization and to give a final polyethylene product. 1. A polyethylene product composition comprising:{'sup': '3', 'sub': 2', 'w', 'n, 'from 35 to 75 wt % of a first polyethylene which is an ethylene copolymer having a density of from 0.875 to 0.916 g/cm, a melt index Iof from 0.1 to 5 dg/min, and a molecular weight distribution M/Mof from 1.6 to 2.4;'}{'sup': '3', 'sub': 2', 'w', 'n, 'from 10 to 40 wt % of a second polyethylene selected from an ethylene copolymer or an ethylene homopolymer having a density of from 0.945 to 0.975 g/cm, a melt index Iof from 1.0 to 20 dg/min, and a molecular weight distribution M/Mof from 1.6 to 2.4; and'}{'sup': '3', 'sub': 2', 'w', 'n', 'w', 'n, 'from 10 to 40 wt % of a third polyethylene which is an ethylene copolymer having a density of from 0.880 to 0.936 g/cm, a melt index Iof from 0.1 to 100 dg/min, and a molecular weight distribution M/Mthat is greater than the molecular weight distribution M/Mof either the first or second ethylene polymer components;'}{'sup': '3', 'sub': '2', 'wherein the polyethylene product composition has a density of ≤0.939 g/cm, a melt index Iof from 0.1 to 10 dg/min, a unimodal profile in a gel permeation chromatograph (GPC) and a multimodal profile in a TREF analysis.'}2. The polyethylene product composition of wherein at least 15 weight percent of the composition elutes at a temperature of from 90° C. to 100° C. in a TREF analysis.3. The polyethylene product composition wherein the composition has a multimodal DSC profile.4. The polyethylene product ...

MEANS FOR INCREASING THE MOLECULAR WEIGHT AND REDUCING THE DENSITY OF THE INTERPOLYMER OF ETHYLENE BY THE USE OF MIXED FORMULATIONS OF HOMOGENOUS CATALYSTS

Un proceso continuo de polimerización en solución en el que se emplean por lo menos dos formulaciones de catalizadores. Se emplea una primera formulación de catalizador homogéneo en un primer reactor para producir un primer interpolímero de etileno y se emplea una primera formulación de catalizador heterogéneo en un segundo reactor para producir un segundo interpolímero de etileno. Opcionalmente, en un tercer reactor se forma un tercer interpolímero de etileno. Los productos de interpolímeros de etileno que se obtienen como resultado poseen propiedades deseables en una variedad de aplicaciones de uso final, por ejemplo en aplicaciones en películas. Se divulga un medio para incrementar el peso molecular del primer interpolímero de etileno y/o un medio para incrementar la temperatura del primer reactor, con relación a una tercera formulación de catalizador homogéneo. Se divulga un medio para reducir la proporción en peso de (a-olefina / etileno) en el primer reactor y/o reducir la densidad del primer interpolímero de etileno, con relación a una tercera formulación de catalizador homogéneo. A continuous solution polymerization process in which at least two catalyst formulations are employed. A first homogeneous catalyst formulation is used in a first reactor to produce a first ethylene interpolymer and a first heterogeneous catalyst formulation is used in a second reactor to produce a second ethylene interpolymer. Optionally, a third ethylene interpolymer is formed in a third reactor. The ethylene interpolymer products that are obtained as a result possess desirable properties in a variety of end-use applications, for example in film applications. A means for increasing the molecular weight of the first ethylene interpolymer and / or a means for increasing the temperature of the first reactor in relation to a third homogeneous catalyst formulation is disclosed. A means for reducing the weight ratio of (a-olefin / ethylene) in the first reactor and / or reducing the ...

Manufacturing ethylene interpolymer products at higher production rate

This disclosure relates to an improved continuous solution polymerization process wherein production rate is increased. Process solvent, ethylene, optional comonomers, optional hydrogen and a bridged metallocene catalyst formulation are injected into a first reactor to form a first ethylene interpolymer. Optionally, process solvent, ethylene, optional comonomers, optional hydrogen and a bridged metallocene catalyst formulation are injected into a second reactor forming a second ethylene interpolymer. The first and second reactors may be configured in series or parallel modes of operation. Optionally, a third ethylene interpolymer is formed in a third reactor, wherein a homogeneous catalyst formulation or a heterogeneous catalyst formulation is employed. In solution, the first, optional second and optional third ethylene interpolymers are combined, the catalyst is deactivated, the solution is optionally passivated and following a phase separation process an ethylene interpolymer product is recovered.

Means for increasing the molecular weight and decreasing the density of ethylene interpolymers employing homogeneous and heterogeneous catalyst formulations

A continuous solution polymerization process is disclosed wherein at least two catalyst formulations are employed. A first homogeneous catalyst formulation is employed in a first reactor to produce a first ethylene interpolymer and a first heterogeneous catalyst formulation is employed in a second reactor to produce a second ethylene interpolymer. Optionally a third ethylene interpolymer is formed in a third reactor. The resulting ethylene interpolymer products possess desirable properties in a variety of end use applications, for example in film applications. A means for increasing the molecular weight of the first ethylene interpolymer is disclosed and/or a means for increasing the temperature of the first reactor, relative to a third homogeneous catalyst formulation. A means for reducing the (α-olefin/ethylene) weight ratio in the first reactor is disclosed and/or reducing the density of the first ethylene interpolymer, relative to a third homogeneous catalyst formulation.

Medios para aumentar el peso molecular y disminuir la densidad de los interpolímeros de etileno usando formulaciones catalizadoras homogéneas y heterogéneas.

SE DIVULGA UN PROCESO DE POLIMERIZACIÓN DE SOLUCIÓN CONTINUA CARACTERIZADO PORQUE SE EMPLEAN AL MENOS DOS FORMULACIONES CATALIZADORAS. SE EMPLEA UNA PRIMERA FORMULACIÓN CATALIZADORA HOMOGÉNEA EN UN PRIMER REACTOR PARA PRODUCIR UN PRIMER INTERPOLÍMERO DE ETILENO Y SE EMPLEA UNA PRIMERA FORMULACIÓN CATALIZADORA HETEROGÉNEA EN UN SEGUNDO REACTOR PARA PRODUCIR UN SEGUNDO INTERPOLÍMERO DE ETILENO. OPCIONALMENTE, SE FORMA UN TERCER INTERPOLÍMERO DE ETILENO EN UN TERCER REACTOR. LOS PRODUCTOS DE INTERPOLÍMERO DE ETILENO RESULTANTES POSEEN PROPIEDADES DESEABLES EN VARIAS APLICACIONES DE USO FINAL, POR EJEMPLO, EN APLICACIONES DE PELÍCULA. SE DIVULGA UN MEDIO PARA AUMENTAR EL PESO MOLECULAR DEL PRIMER INTERPOLÍMERO DE ETILENO Y/O UN MEDIO PARA AUMENTAR LA TEMPERATURA DEL PRIMER REACTOR, EN RELACIÓN CON UNA TERCERA FORMULACIÓN CATALIZADORA HOMOGÉNEA. SE DIVULGA UN MEDIO PARA REDUCIR LA PROPORCIÓN DE PESO (a-OLEFINA/ETILENO) EN EL PRIMER REACTOR Y/O PARA REDUCIR LA DENSIDAD DEL PRIMER INTERPOLÍMERO DE ETILENO EN RELACIÓN CON UNA TERCERA FORMULACIÓN CATALIZADORA HOMOGÉNEA.

Medios para aumentar el peso molecular y disminuir la densidad de los interpolímeros de etileno empleando formulaciones de catalizadores homogéneos.

UN PROCESO CONTINUO DE POLIMERIZACIÓN EN SOLUCIÓN EN EL QUE SE EMPLEAN POR LO MENOS DOS FORMULACIONES DE CATALIZADORES. SE EMPLEA UNA PRIMERA FORMULACIÓN DE CATALIZADOR HOMOGÉNEO EN UN PRIMER REACTOR PARA PRODUCIR UN PRIMER INTERPOLÍMERO DE ETILENO Y SE EMPLEA UNA PRIMERA FORMULACIÓN DE CATALIZADOR HETEROGÉNEO EN UN SEGUNDO REACTOR PARA PRODUCIR UN SEGUNDO INTERPOLÍMERO DE ETILENO. OPCIONALMENTE, EN UN TERCER REACTOR SE FORMA UN TERCER INTERPOLÍMERO DE ETILENO. LOS PRODUCTOS DE INTERPOLÍMEROS DE ETILENO QUE SE OBTIENEN COMO RESULTADO POSEEN PROPIEDADES DESEABLES EN UNA VARIEDAD DE APLICACIONES DE USO FINAL, POR EJEMPLO EN APLICACIONES EN PELÍCULAS. SE DIVULGA UN MEDIO PARA INCREMENTAR EL PESO MOLECULAR DEL PRIMER INTERPOLÍMERO DE ETILENO Y/O UN MEDIO PARA INCREMENTAR LA TEMPERATURA DEL PRIMER REACTOR, CON RELACIÓN A UNA TERCERA FORMULACIÓN DE CATALIZADOR HOMOGÉNEO. SE DIVULGA UN MEDIO PARA REDUCIR LA PROPORCIÓN EN PESO DE (-OLEFINA/ETILENO) EN EL PRIMER REACTOR Y/O REDUCIR LA DENSIDAD DEL PRIMER INTERPOLÍMERO DE ETILENO, CON RELACIÓN A UNA TERCERA FORMULACIÓN DE CATALIZADOR HOMOGÉNEO.

Means For Increasing the Molecular Weight and Decreasing the Density of Ethylene Interpolymers Employing Homogeneous and Heterogeneous Catalyst Formulations

A continuous solution polymerization process is disclosed wherein at least two catalyst formulations are employed. A first homogeneous catalyst formulation is employed in a first reactor to produce a first ethylene interpolymer and a first heterogeneous catalyst formulation is employed in a second reactor to produce a second ethylene interpolymer. Optionally a third ethylene interpolymer is formed in a third reactor. The resulting ethylene interpolymer products possess desirable properties in a variety of end use applications, for example in film applications. A means for increasing the molecular weight of the first ethylene interpolymer is disclosed and/or a means for increasing the temperature of the first reactor, relative to a third homogeneous catalyst formulation. A means for reducing the (α-olefin/ethylene) weight ratio in the first reactor is disclosed and/or reducing the density of the first ethylene interpolymer, relative to a third homogeneous catalyst formulation. 1139-. (canceled)141. The process according to further comprising:a) optionally adding a catalyst deactivator A to the third exit stream, downstream of the first and the second reactor, forming a deactivated solution A;b) adding a catalyst deactivator B to the fourth exit stream, downstream of the third reactor, forming a deactivated solution B; with the proviso that step b) is skipped if the catalyst deactivator A is added in step a); andc) phase separating the deactivated solution A or B to recover the ethylene interpolymer product.142. The process according to claim 141 , further comprising:d) adding a passivator to the deactivated solution A or B forming a passivated solution; ande) phase separating the passivated solution to recover the ethylene interpolymer product.144. The process according to comprising the following molar ratios in the first reactor:a molar ratio of component B to component A from about 0.3:1 to about 10:1;a molar ratio of component M to component A from about 1:1 to ...

Means For Increasing the Molecular Weight and Decreasing the Density of Ethylene Interpolymers Employing Homogeneous and Heterogeneous Catalyst Formulations

A continuous solution polymerization process is disclosed wherein at least two catalyst formulations are employed. A first homogeneous catalyst formulation is employed in a first reactor to produce a first ethylene interpolymer and a first heterogeneous catalyst formulation is employed in a second reactor to produce a second ethylene interpolymer. Optionally a third ethylene interpolymer is formed in a third reactor. The resulting ethylene interpolymer products possess desirable properties in a variety of end use applications, for example in film applications. A means for increasing the molecular weight of the first ethylene interpolymer is disclosed and/or a means for increasing the temperature of the first reactor, relative to a third homogeneous catalyst formulation. A means for reducing the (α-olefin/ethylene) weight ratio in the first reactor is disclosed and/or reducing the density of the first ethylene interpolymer, relative to a third homogeneous catalyst formulation. 2. The polyethylene film according to claim 1 , wherein the ethylene interpolymer product further comprising one or more of the following:(i) greater than or equal to about 0.02 terminal vinyl unsaturations per 100 carbon atoms;(ii) greater than or equal to about 0.12 parts per million (ppm) of a total catalytic metal.3. The polyethylene film according to claim 1 , wherein the ethylene interpolymer product has a melt index from about 0.3 to about 500 dg/minute; wherein melt index is measured according to ASTM D1238 (2.16 kg load and 190° C.).4. The polyethylene film according to claim 1 , wherein the ethylene interpolymer product has a M/Mfrom about 2 to about 25.5. The polyethylene film according to claim 1 , wherein the ethylene interpolymer product has a CDBIfrom about 20% to about 98%.7. The polyethylene film according to claim 1 , wherein(i) the first ethylene interpolymer has a melt index from about 0.01 to about 200 dg/minute;(ii) the second ethylene interpolymer has melt index from ...

Means For Increasing the Molecular Weight and Decreasing the Density of Ethylene Interpolymers Employing Homogeneous and Heterogeneous Catalyst Formulations

A continuous solution polymerization process is disclosed wherein at least two catalyst formulations are employed. A first homogeneous catalyst formulation is employed in a first reactor to produce a first ethylene interpolymer and a first heterogeneous catalyst formulation is employed in a second reactor to produce a second ethylene interpolymer. Optionally a third ethylene interpolymer is formed in a third reactor. The resulting ethylene interpolymer products possess desirable properties in a variety of end use applications, for example in film applications. A means for increasing the molecular weight of the first ethylene interpolymer is disclosed and/or a means for increasing the temperature of the first reactor, relative to a third homogeneous catalyst formulation. A means for reducing the (α-olefin/ethylene) weight ratio in the first reactor is disclosed and/or reducing the density of the first ethylene interpolymer, relative to a third homogeneous catalyst formulation. 2. The ethylene interpolymer product according to claim 1 , further comprising one or more of the following:(i) greater than or equal to about 0.02 terminal vinyl unsaturations per 100 carbon atoms;(ii) greater than or equal to about 0.12 parts per million (ppm) of a total catalytic metal.3. The ethylene interpolymer product according to having a melt index from about 0.3 to about 500 dg/minute; wherein melt index is measured according to ASTM D1238 (2.16 kg load and 190° C.).4. The ethylene interpolymer product according to having a density from about 0.862 to about 0.975 g/cc; wherein density is measured according to ASTM D792.5. The ethylene interpolymer product according to having a M/Mfrom about 2 to about 25.6. The ethylene interpolymer product according to having a CDBIfrom about 20% to about 98%.10. The ethylene interpolymer product according to manufactured using a solution polymerization process.11. The ethylene interpolymer product according to further comprising from 0 to about 10 ...

Means for increasing the molecular weight and decreasing the density of ethylene interpolymers employing homogeneous and heterogeneous catalyst formulations

A continuous solution polymerization process is disclosed wherein at least two catalyst formulations are employed. A first homogeneous catalyst formulation is employed in a first reactor to produce a first ethylene interpolymer and a first heterogeneous catalyst formulation is employed in a second reactor to produce a second ethylene interpolymer. Optionally a third ethylene interpolymer is formed in a third reactor. The resulting ethylene interpolymer products possess desirable properties in a variety of end use applications, for example in film applications. A means for increasing the molecular weight of the first ethylene interpolymer is disclosed and/or a means for increasing the temperature of the first reactor, relative to a third homogeneous catalyst formulation. A means for reducing the (α-olefin/ethylene) weight ratio in the first reactor is disclosed and/or reducing the density of the first ethylene interpolymer, relative to a third homogeneous catalyst formulation.

Means For Increasing the Molecular Weight and Decreasing the Density of Ethylene Interpolymers Employing Mixed Homogeneous Catalyst Formulations

A continuous solution polymerization process is disclosed wherein at least two homogeneous catalyst formulations are employed. A first homogeneous catalyst formulation is employed in a first reactor to produce a first ethylene interpolymer and a second homogeneous catalyst formulation is employed in a second reactor to produce a second ethylene interpolymer. Optionally a third ethylene interpolymer is formed in a third reactor. The resulting ethylene interpolymer products possess desirable properties in a variety of end use applications, for example in film applications. A means for increasing the molecular weight of the first ethylene interpolymer is disclosed and/or a means for increasing the temperature of the first reactor, relative to the third homogeneous catalyst formulation. A means for reducing the (α-olefin/ethylene) weight ratio in the first reactor is disclosed and/or reducing the density of the first ethylene interpolymer, relative to the third homogeneous catalyst formulation. 135-. (canceled)37. The process according to further comprising:a) adding a catalyst deactivator A to the second exit stream, downstream of the second reactor, forming a deactivated solution A; or adding a catalyst deactivator B to the third exit stream, downstream of the third reactor, forming a deactivated solution B;b) phase separating deactivated solution A or deactivated solution B to recover the ethylene interpolymer product.38. The process according to claim 37 , further comprising:c) adding a passivator to deactivated solution A or deactivated solution B forming a passivated solution, with the proviso that step c) omitted if the heterogeneous catalyst formulation is not added to the third reactor, andd) phase separating said-deactivated solution A or deactivated solution B, or the passivated solution, to recover the ethylene interpolymer product.40. The process according to claim 39 , having the following molar ratios in the first reactor:{'sup': 'A', 'component Bto ...

FILMS AND PRODUCTS OF ETHYLENE INTERPOLYMER

Composiciones de interpolímero de etileno y a películas preparadas con las mismas; específicamente, productos de interpolímeros de etileno que tienen: un Factor de Ramificación de Cadena Larga sin dimensión, LCBF, mayor que o igual a 0,001; un metal catalítico residual de desde ³ 0,03 hasta £ 5 ppm de hafnio, y una proporción de insaturación sin dimensión, UR, de desde ³ -0,40 hasta £ 0,06, donde UR se define por la siguiente relación; UR = (SCU - TU) / TU, donde, SCU es la cantidad de una saturación de la cadena lateral por 100 carbonos y TU es la cantidad de una insaturación terminal por 100 carbonos, en dicho producto de interpolímero de etileno. Los productos de interpolímeros de etileno divulgados tienen un índice de fusión de aproximadamente 0,3 a aproximadamente 500 dg/minuto, una densidad de aproximadamente 0,855 a aproximadamente 0,975 g/cc, una polidispersidad (Mʷ/Mₙ) de aproximadamente 1,7 a aproximadamente 25 y una Amplitud de Distribución de la Composición (CDBI₅₀) de aproximadamente 1% a aproximadamente 98%. Ethylene interpolymer compositions and films made 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 ³ 0.03 to £ 5 ppm hafnium, and a dimensionless unsaturation ratio, UR, of from ³ -0.40 to £ 0.06, where UR is defined by the following relationship; UR = (SCU - TU) / TU, where, SCU is the amount of a saturation of the side chain per 100 carbons and TU is the amount of a terminal unsaturation per 100 carbons, in said ethylene interpolymer product. The disclosed ethylene interpolymer products have a melt index of about 0.3 to about 500 dg / minute, a density of about 0.855 to about 0.975 g / cc, a polydispersity (Mʷ / Mₙ) of about 1.7 to about 25 and a Composition Distribution Width (CDBI₅₀) of about 1% to about 98%.

MANUFACTURING ETHLENE INTERPOLYMER PRODUCTS AT HIGHER PRODUCTION RATE

This disclosure relates to an improved continuous solution polymerization process wherein production rate is increased. Process solvent, ethylene, optional comonomers, optional hydrogen and a bridged metallocene catalyst formulation are injected into a first reactor to form a first ethylene interpolymer. Optionally, process solvent, ethylene, optional comonomers, optional hydrogen and a bridged metallocene catalyst formulation are injected into a second reactor forming a second ethylene interpolymer. The first and second reactors may be configured in series or parallel modes of operation. Optionally, a third ethylene interpolymer is formed in a third reactor, wherein a homogeneous catalyst formulation or a heterogeneous catalyst formulation is employed. In solution, the first, optional second and optional third ethylene interpolymers are combined, the catalyst is deactivated, the solution is optionally passivated and following a phase separation process an ethylene interpolymer product is recovered. 2. The process of claim 1 , wherein component A further comprises a hindered phenol.3. The process of claim 1 , wherein component M is methylalumoxane (MMAO-7) claim 1 , component B is trityl tetrakis (pentafluoro-phenyl) borate claim 1 , and component P is 2 claim 1 ,6-di-tert-butyl-4-ethylphenol.4. The process of claim 1 , further comprising the injection of the bridged metallocene catalyst formulation into the one or more reactors at a catalyst inlet temperature from 20° C. to 70° C.5. The process of claim 1 , further comprising the injection of the bridged metallocene catalyst formulation into the one or more reactor at a catalyst inlet temperature from 80° C. to 180° C.6. The process of claim 1 , wherein the process solvent is one or more Cto Calkanes.7. The process of claim 1 , wherein the one or more reactors operate at a temperature from 80° C. to 300° C. and a pressure from 3 MPag to 45 MPag.8. The process of claim 1 , wherein the process solvent in the one or ...

Ethylene interpolymer products having intermediate branching

This disclosure relates to ethylene interpolymer product having intermediate branching. Intermediate branching was defined as branching that was longer than the branch length due to comonomer and shorter than the entanglement molecular weight (M e ). Intermediately branched ethylene interpolymer products were produced in a continuous solution polymerization process employing an intermediate branching catalyst formulation. Intermediately branched ethylene interpolymer products were characterized by a Non-Comonomer Index Distribution (NCID i ), a melt index from 0.3 to 500 dg/minute, a density from 0.858 to 0.965 g/cm 3 , a polydispersity (M w /M n ) from about 2 to about 25 and a CDBI 50 from about 10% to about 98%. A method based on triple detection cross fractionation chromatography (3D-CFC) was disclosed to measure NCID i .

Multi reactor solution polymerization, polyethylene and polyethylene film

This disclosure relates to a continuous solution three reactor polymerization process. Process solvent, ethylene, optional comonomers, optional hydrogen and a single site catalyst system are injected into a first and second reactor configured in parallel to one another. A third reactor receives effluent from the first reactor, the second reactor, or a combination of the first and second reactors. Fresh monomer is feed to the third reactor for further polymerization and to give a final polyethylene product.

PROCESS TO MANUFACTURE ETHYLENE INTERPOLYMER PRODUCTS

This disclosure relates to an improved solution polymerization process wherein the molecular weight of an ethylene interpolymer product can be increased relative to a comparative process; or at constant ethylene interpolymer molecular weight the improved process can be operated at higher polymerization temperature relative to the comparative process. This disclosure also relates to an improved solution polymerization process wherein an ethylene interpolymer product at target density can be produced at a lower [α-olefin/ethylene] weight ratio in the reactor, relative to a comparative process. Process solvent, ethylene, optional comonomers, optional hydrogen and a bridged metallocene catalyst formulation are injected into one or more reactors to form the ethylene interpolymer product. The catalyst is subsequently deactivated, the solution is optionally passivated and following a phase separation process the ethylene interpolymer product is recovered. 3. The improved process according to having the following molar ratios: a molar ratio of said component B to said component A from 0.3:1 to 10:1; a molar ratio of said component M to said component A from 1:1 to 300:1 claim 2 , and; a molar ratio of said optional component P to said component M from 0.0:1 to 1:1.4. The improved process according to wherein component M is methylalumoxane (MMAO-7) claim 2 , component B is trityl tetrakis (pentafluoro-phenyl) borate and component P is 2 claim 2 ,6-di-tert-butyl-4-ethylphenol.5. The improved process according to claim 2 , further comprising the injection of said bridged metallocene catalyst formulation into said one or more reactors at a catalyst inlet temperature from 20° C. to 70° C.; optionally claim 2 , said component M and said component P may be deleted from said bridged metallocene catalyst formulation and replaced with a component J defined by the formula Al(R)(OR) claim 2 , wherein the (R) groups may be the same or different hydrocarbyl groups having from 1 to 10 ...

Películas y productos de interpolímero de etileno.

LA DIVULGACIÓN SE REFIERE A COMPOSICIONES DE INTERPOLÍMERO DE ETILENO Y A PELÍCULAS PREPARADAS A PARTIR DE ESTAS. ESPECÍFICAMENTE: PRODUCTO DE INTERPOLÍMERO DE ETILENO QUE CONTIENE: UN FACTOR DE RAMIFICACIÓN DE CADENA LARGA ADIMENSIONAL, LCBF, MAYOR O IGUAL QUE 0,001; UN METAL CATALÍTICO RESIDUAL DE ≥0,03 A ≤5 PPM DE HAFNIO Y; UNA RELACIÓN DE INSATURACIÓN ADIMENSIONAL, UR, DE ≥-0,40 A ≤0,06, EN DONDE UR SE DEFINE POR LA SIGUIENTE RELACIÓN; UR = (SCU-TU)/TU, DONDE SCU ES LA CANTIDAD DE UNA INSATURACIÓN DE CADENA LATERAL POR 100 CARBONOS Y TU ES LA CANTIDAD DE UNA INSATURACIÓN TERMINAL POR 100 CARBONOS, EN DICHO PRODUCTO INTERPOLÍMERO DE ETILENO. LOS PRODUCTOS DE INTERPOLÍMERO DE ETILENO DESCRITOS TIENEN UN ÍNDICE DE FUSIÓN DE APROXIMADAMENTE 0,3 A APROXIMADAMENTE 500 DG/MIN, UNA DENSIDAD DE APROXIMADAMENTE 0,855 A APROXIMADAMENTE 0,975 G/CC, UNA POLIDISPERSIDAD (MW/MN) DE APROXIMADAMENTE 1,7 A APROXIMADAMENTE 25 Y UN ÍNDICE DE AMPLITUD DE DISTRIBUCIÓN DE COMPOSICIÓN (CDBI50) DE APROXIMADAMENTE1% A APROXIMADAMENTE 98%.

Multi reactor de polimerización en solucion.

Esta revelación tiene relación con un proceso de polimerización continua de tres reactores. El solvente de proceso, etileno, comonómeros opcionales, hidrógeno opcional y un sistema catalizador de sitio único son inyectados en un primer y segundo reactores configurados en paralelo entre sí. Un tercer reactor recibe el efluente desde el primer reactor, el segundo reactor o una combinación del primer y segundo reactores. Monómero fresco es suministrado al tercer reactor para posterior polimerización y para dar un producto de polietileno final.

Multi reactor de polimerización en solucion, polietileno y pelicula de polietileno.

Means for increasing the molecular weight and decreasing the density of ethylene interpolymers employing mixed homogeneous catalyst formulations

A continuous solution polymerization process is disclosed wherein at least two homogeneous catalyst formulations are employed. A first homogeneous catalyst formulation is employed in a first reactor to produce a first ethylene interpolymer and a second homogeneous catalyst formulation is employed in a second reactor to produce a second ethylene interpolymer. Optionally a third ethylene interpolymer is formed in a third reactor. The resulting ethylene interpolymer products possess desirable properties in a variety of end use applications, for example in film applications. A means for increasing the molecular weight of the first ethylene interpolymer is disclosed and/or a means for increasing the temperature of the first reactor, relative to the third homogeneous catalyst formulation. A means for reducing the (α-olefin/ethylene) weight ratio in the first reactor is disclosed and/or reducing the density of the first ethylene interpolymer, relative to the third homogeneous catalyst formulation.

Means For Increasing the Molecular Weight and Decreasing the Density of Ethylene Interpolymers Employing Mixed Homogeneous Catalyst Formulations

A continuous solution polymerization process is disclosed wherein at least two homogeneous catalyst formulations are employed. A first homogeneous catalyst formulation is employed in a first reactor to produce a first ethylene interpolymer and a second homogeneous catalyst formulation is employed in a second reactor to produce a second ethylene interpolymer. Optionally a third ethylene interpolymer is formed in a third reactor. The resulting ethylene interpolymer products possess desirable properties in a variety of end use applications, for example in film applications. A means for increasing the molecular weight of the first ethylene interpolymer is disclosed and/or a means for increasing the temperature of the first reactor, relative to the third homogeneous catalyst formulation. A means for reducing the (α-olefin/ethylene) weight ratio in the first reactor is disclosed and/or reducing the density of the first ethylene interpolymer, relative to the third homogeneous catalyst formulation. 1. An ethylene interpolymer product comprising:(i) a first ethylene interpolymer;(ii) a second ethylene interpolymer, and;(iii) optionally a third ethylene interpolymer;wherein said ethylene interpolymer product has a dimensionless Long Chain Branching Factor, LCBF, greater than or equal to about 0.001;wherein said ethylene interpolymer product has from about 0.0015 parts per million (ppm) to about 2.4 ppm of hafnium, and;wherein said ethylene interpolymer product has from about 0.006 parts per million (ppm) to about 5.7 ppm of titanium.2. The ethylene interpolymer product according to claim 1 , further comprising one or more of the following:(i) less than or equal to about 0.01 terminal vinyl unsaturations per 100 carbon atoms;(ii) from about 0.03 ppm to about 6.0 ppm of a total catalytic metal.3. The ethylene interpolymer product according to having a melt index from about 0.3 to about 500 dg/minute; wherein melt index is measured according to ASTM D1238 (2.16 kg load and 190° ...

IMPROVED PROCESS FOR MAKING ETHYLENE INTERPOLYMER

Un proceso de polimerización en solución mejorado en donde el peso molecular de un producto de interpolímero de etileno puede incrementarse en relación con un proceso comparativo; o, a un peso molecular constante del interpolímero de etileno, el proceso mejorado puede ser operado a una temperatura de polimerización mayor en relación con el proceso comparativo. Esta también se refiere a un proceso de polimerización en solución mejorado, en donde un producto de interpolímero de etileno a la densidad buscada puede ser producido a una relación en peso menor [a-olefina / etileno] en el reactor, con relación a un proceso comparativo. Se inyectan solvente de proceso, etileno, co-monómeros opcionales, hidrógeno opcional, y una formulación de catalizador de metaloceno en puente en uno o más reactores para formar el producto de interpolímero de etileno. Posteriormente, el catalizador se desactiva, la solución es opcionalmente pasivada y, después de un proceso de separación de fases, se recupera el producto de interpolímero de etileno. An improved solution polymerization process where the molecular weight of an ethylene interpolymer product can be increased relative to a comparative process; or, at a constant molecular weight of the ethylene interpolymer, the improved process can be operated at a higher polymerization temperature relative to the comparative process. This also refers to an improved solution polymerization process, where an ethylene interpolymer product at the desired density can be produced at a lower weight ratio [α-olefin / ethylene] in the reactor, relative to an comparative. Process solvent, ethylene, optional comonomers, optional hydrogen, and a bridged metallocene catalyst formulation are injected into one or more reactors to form the ethylene interpolymer product. Subsequently, the catalyst is deactivated, the solution is optionally passivated and, after a phase separation process, the ethylene interpolymer product is recovered.

Fabricación de productos de interpolímero de etileno a una mayor tasa de producción.

ESTA DIVULGACIÓN SE REFIERE A UN PROCESO CONTINUO MEJORADO DE POLIMERIZACIÓN EN SOLUCIÓN EN DONDE SE AUMENTA LA VELOCIDAD DE PRODUCCIÓN. EN UN PRIMER REACTOR SE INYECTAN: DISOLVENTE DE PROCESO, ETILENO, COMONÓMEROS OPCIONALES, HIDRÓGENO OPCIONAL Y UNA FORMULACIÓN DE CATALIZADOR METALOCÉNICO PUENTEADO PARA FORMAR UN PRIMER INTERPOLÍMERO DE ETILENO. OPCIONALMENTE, EN UN SEGUNDO REACTOR SE INYECTAN: DISOLVENTE DE PROCESO, ETILENO, COMONÓMEROS OPCIONALES, HIDRÓGENO OPCIONAL Y UNA FORMULACIÓN DE CATALIZADOR METALOCÉNICO PUENTEADO PARA FORMAR UN SEGUNDO INTERPOLÍMERO DE ETILENO. LOS PRIMER Y SEGUNDO REACTORES PUEDEN CONFIGURARSE EN LOS MODOS DE OPERACIÓN EN SERIE O EN PARALELO. OPCIONALMENTE, SE FORMA UN TERCER INTERPOLÍMERO DE ETILENO EN UN TERCER REACTOR, EN DONDE SE EMPLEA UNA FORMULACIÓN DE CATALIZADOR HOMOGÉNEO O UNA FORMULACIÓN DE CATALIZADOR HETEROGÉNEO. EN LA SOLUCIÓN, SE COMBINAN LOS PRIMER, SEGUNDO OPCIONAL Y TERCER OPCIONAL INTERPOLÍMEROS DE ETILENO, SE DESACTIVA EL CATALIZADOR, OPCIONALMENTE LA SOLUCIÓN SE HACE PASIVA Y DESPUÉS DE UN PROCESO DE SEPARACIÓN DE FASES SE RECUPERA UN PRODUCTO INTERPOLIMÉRICO DE ETILENO. THIS DISCLOSURE REFERS TO AN IMPROVED CONTINUOUS PROCESS OF SOLUTION POLYMERIZATION WHERE THE PRODUCTION SPEED IS INCREASED. INJECTED INTO A FIRST REACTOR: PROCESS SOLVENT, ETHYLENE, OPTIONAL COMMONOMERS, OPTIONAL HYDROGEN AND A BRIDGED METALOCENE CATALYST FORMULATION TO FORM A FIRST ETHYLENE INTERPOLYMER. OPTIONALLY INTO A SECOND REACTOR: PROCESS SOLVENT, ETHYLENE, OPTIONAL COMMONOMERS, OPTIONAL HYDROGEN AND A BRIDGED METALLOCENE CATALYST FORMULATION TO FORM A SECOND INTERPOLYMER OF ETHYLENE. THE FIRST AND SECOND REACTORS CAN BE CONFIGURED IN SERIES OR PARALLEL OPERATION MODES. OPTIONALLY, A THIRD ETHYLENE INTERPOLYMER IS FORMED IN A THIRD REACTOR, WHERE A HOMOGENEOUS CATALYST FORMULATION OR A HETEROGENEOUS CATALYST FORMULATION IS USED. IN THE SOLUTION, THE FIRST, SECOND OPTIONAL AND THIRD OPTIONAL ETHYLENE INTERPOLYMERS ARE COMBINED, THE CATALYST ...

ETHYLENE INTERPOLYMER PRODUCTS HAVING INTERMEDIATE BRANCHING

This disclosure relates to ethylene interpolymer product having intermediate branching. Intermediate branching was defined as branching that was longer than the branch length due to comonomer and shorter than the entanglement molecular weight (M). Intermediately branched ethylene interpolymer products were produced in a continuous solution polymerization process employing an intermediate branching catalyst formulation. Intermediately branched ethylene interpolymer products were characterized by a Non-Comonomer Index Distribution (NCID), a melt index from 0.3 to 500 dg/minute, a density from 0.858 to 0.965 g/cm, a polydispersity (M/M) from about 2 to about 25 and a CDBIfrom about 10% to about 98%. A method based on triple detection cross fractionation chromatography (3D-CFC) was disclosed to measure NCID. 2. The ethylene interpolymer product of claim 1 , wherein said first ethylene interpolymer is synthesized using a homogenous catalyst formulation and said second ethylene interpolymer is synthesized using an intermediate branching catalyst formulation.3. The ethylene interpolymer product of claim 2 , wherein said homogeneous catalyst formulation is an unbridged single site catalyst formulation and said intermediate branching catalyst formulation is an in-line intermediate branching catalyst formulation or a batch intermediate branching catalyst formulation.4. The ethylene interpolymer product of having a melt index from about 0.3 to about 500 dg/minute and a density from about 0.858 to about 0.965 g/cc; wherein melt index is measured according to ASTM D1238 (2.16 kg load and 190° C.) and density is measured according to ASTM D792.5. The ethylene interpolymer product of having a M/Mfrom about 2 to about 25.6. The ethylene interpolymer product of having a CDBIfrom about 10% to about 98%.7. The ethylene interpolymer product of ; wherein{'sup': '3', '(i) said first ethylene interpolymer has a melt index from about 0.001 to about 1000 dg/minute, a density from about 0. ...

ETHYLENE INTERPOLYMER PRODUCTS HAVING INTERMEDIATE BRANCHING

This disclosure relates to ethylene interpolymer product having intermediate branching. Intermediate branching was defined as branching that was longer than the branch length due to comonomer and shorter than the entanglement molecular weight (M). Intermediately branched ethylene interpolymer products were produced in a continuous solution polymerization process employing an intermediate branching catalyst formulation. Intermediately branched ethylene interpolymer products were characterized by a Non-Comonomer Index Distribution (NCID), a melt index from 0.3 to 500 dg/minute, a density from 0.858 to 0.965 g/cm, a polydispersity (M/M) from about 2 to about 25 and a CDBIfrom about 10% to about 98%. A method based on triple detection cross fractionation chromatography (3D-CFC) was disclosed to measure NCID. 2. The ethylene interpolymer product of claim 1 , wherein said first ethylene interpolymer is synthesized using a homogenous catalyst formulation and said second ethylene interpolymer is synthesized using an intermediate branching catalyst formulation.3. The ethylene interpolymer product of claim 2 , wherein said homogeneous catalyst formulation is an unbridged single site catalyst formulation and said intermediate branching catalyst formulation is an in-line intermediate branching catalyst formulation or a batch intermediate branching catalyst formulation.4. The ethylene interpolymer product of having a melt index from about 0.3 to about 500 dg/minute and a density from about 0.858 to about 0.965 g/cc; wherein melt index is measured according to ASTM D1238 (2.16 kg load and 190° C.) and density is measured according to ASTM D792.5. The ethylene interpolymer product of having a M/Mfrom about 2 to about 25.6. The ethylene interpolymer product of having a CDBIfrom about 10% to about 98%.7. The ethylene interpolymer product of ; wherein{'sup': '3', '(i) said first ethylene interpolymer has a melt index from about 0.001 to about 1000 dg/minute, a density from about 0. ...

MANUFACTURING ETHYLENE INTERPOLYMER PRODUCTS AT HIGHER PRODUCTION RATE

This disclosure relates to an improved continuous solution polymerization process wherein production rate is increased. Process solvent, ethylene, optional comonomers, optional hydrogen and a bridged metallocene catalyst formulation are injected into a first reactor to form a first ethylene interpolymer. Optionally, process solvent, ethylene, optional comonomers, optional hydrogen and a bridged metallocene catalyst formulation are injected into a second reactor forming a second ethylene interpolymer. The first and second reactors may be configured in series or parallel modes of operation. Optionally, a third ethylene interpolymer is formed in a third reactor, wherein a homogeneous catalyst formulation or a heterogeneous catalyst formulation is employed. In solution, the first, optional second and optional third ethylene interpolymers are combined, the catalyst is deactivated, the solution is optionally passivated and following a phase separation process an ethylene interpolymer product is recovered. 125-. (canceled)26. A improved continuous solution polymerization process , wherein said improved process comprises the following:polymerizing ethylene, and optionally at least one α-olefin, in a process solvent, in one or more reactors and employing at least one bridged metallocene catalyst formulation to form an ethylene interpolymer product;{'sup': 'I', 'claim-text': {'br': None, 'sup': I', 'A', 'C', 'C, 'PR=100×(PR−PR)/PR≥10%'}, 'wherein, said improved process as an increased production rate, PR, defined by the following formula;'}{'sup': A', 'C, 'where PRis the production rate of said improved process and PRis a comparative production rate of a comparative process wherein said one or more bridged metallocene catalyst formulation has been replaced with an unbridged single site catalyst formulation.'}282. The improved process according to claim having the following molar ratios: a molar ratio of said component B to said component A from 0.3:1 to 10:1; a molar ratio of ...

ETHYLENE INTERPOLYMER PRODUCTS AND FILMS

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−T)/T, where SCis the amount of a side chain unsaturation per 100 carbons and Tis 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/M) from about 1.7 to about 25 and a Composition Distribution Breadth Index (CDBI) from about 1% to about 98%. 111-. (canceled)12. A film comprising at least one layer comprising an ethylene interpolymer product comprising at least one ethylene interpolymer , wherein the ethylene interpolymer product exhibits;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, wherein the residual catalytic metal is measured using neutron activation; and {'br': None, 'sup': U', 'U', 'U, 'i': −T', 'T, 'UR=(SC)/'}, 'a dimensionless unsaturation ratio, UR, of from ≥−0.40 to ≤0.06, wherein UR is defined by the following relationship;'}{'sup': U', 'U, 'wherein, SCis the amount of a side chain unsaturation per 100 carbons and Tis amount of a terminal unsaturation per 100 carbons, in the ethylene interpolymer product, as determined by ASTM D3124-98 and ASTM D6248-98;'}wherein the ethylene interpolymer product is synthesized in the presence of a bridged metallocene catalyst.13. The film of claim 12 , wherein the film is characterized by one or more of the following:a film gloss at 45° that is from 10% to 30% higher relative to a comparative film of the ...

Means for increasing the molecular weight and decreasing the density of ethylene interpolymers employing homogeneous and heterogeneous catalyst formulations

A continuous solution polymerization process is disclosed wherein at least two catalyst formulations are employed. A first homogeneous catalyst formulation is employed in a first reactor to produce a first ethylene interpolymer and a first heterogeneous catalyst formulation is employed in a second reactor to produce a second ethylene interpolymer. Optionally a third ethylene interpolymer is formed in a third reactor. The resulting ethylene interpolymer products possess desirable properties in a variety of end use applications, for example in film applications. A means for increasing the molecular weight of the first ethylene interpolymer is disclosed and/or a means for increasing the temperature of the first reactor, relative to a third homogeneous catalyst formulation. A means for reducing the (α-olefin/ethylene) weight ratio in the first reactor is disclosed and/or reducing the density of the first ethylene interpolymer, relative to a third homogeneous catalyst formulation.

Very low density polyethylene with rapid crystallization rates

Ethylene copolymer compositions having a density of from 0.860 to 0.910 g/cm 3 exhibit rapid crystallization behavior. The ethylene copolymer compositions comprise a first ethylene copolymer, a second ethylene copolymer and a third ethylene copolymer, where the number average molecular weight of the first ethylene copolymer is greater than the number average molecular weight of the second ethylene copolymer and the third ethylene copolymer. The ethylene copolymer compositions are useful in the formation of monolayer and multilayer films.

Plastomers with rapid crystallization rates

Ethylene copolymer compositions having a density of 0.902 g/cm3 or less exhibit rapid crystallization behavior. The ethylene copolymer compositions comprise a first ethylene copolymer, a second ethylene copolymer and optionally a third ethylene copolymer, where the number average molecular weight of the first ethylene copolymer is greater than the number average molecular weight of the second ethylene copolymer. The ethylene copolymer compositions are useful in the formation of monolayer and multilayer films.

Nonlinear rheology of ethylene interpolymer compositions

This disclosure relates to ethylene interpolymer compositions, films prepared therefrom and a nonlinear rheology method capable of determining presence of long-chain branched structures in these ethylene interpolymer compositions. Ethylene interpolymer compositions disclosed herein specifically relates to ethylene interpolymer products having: a dimensionless nonlinear rheology network parameter, Δint., greater than or equal to 0.01, satisfying 0.01 × (Z − 48)0.78 ≤∆int.≤ 0.01 × (Z − 60)0.78 inequality wherein Ζ is a normalized molecular weight defined by (I) where Mw and Me are the weight average and entanglement molecular weights; and a residual catalytic metal of from ≥ 0.03 to ≤ 5 ppm of hafnium. 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, Mw/Mn, from about 1.7 to about 25 and a Composition Distribution Breadth Index (CDBI50) from about 1% to about 98%.

Manufacturing ethylene interpolymer products at higher production rate

This disclosure relates to an improved continuous solution polymerization process wherein production rate is increased. Process solvent, ethylene, optional comonomers, optional hydrogen and a bridged metallocene catalyst formulation are injected into a first reactor to form a first ethylene interpolymer. Optionally, process solvent, ethylene, optional comonomers, optional hydrogen and a bridged metallocene catalyst formulation are injected into a second reactor forming a second ethylene interpolymer. The first and second reactors may be configured in series or parallel modes of operation. Optionally, a third ethylene interpolymer is formed in a third reactor, wherein a homogeneous catalyst formulation or a heterogeneous catalyst formulation is employed. In solution, the first, optional second and optional third ethylene interpolymers are combined, the catalyst is deactivated, the solution is optionally passivated and following a phase separation process an ethylene interpolymer product is recovered.

Processes for producing polyethylene containing recycled polymeric material

Disclosed herein are polymerization processes where recycled polymeric material is fed to polymerization process to produce a blend of virgin polymer with recycled polymeric content.

Means for increasing the molecular weight and decreasing the density of ethylene interpolymers employing homogeneous and heterogeneous catalyst formulations

A continuous solution polymerization process is disclosed wherein at least two catalyst formulations are employed. A first homogeneous catalyst formulation is employed in a first reactor to produce a first ethylene interpolymer and a first heterogeneous catalyst formulation is employed in a second reactor to produce a second ethylene interpolymer. Optionally a third ethylene interpolymer is formed in a third reactor. The resulting ethylene interpolymer products possess desirable properties in a variety of end use applications, for example in film applicationΩs. A means for increasing the molecular weight of the first ethylene interpolymer is disclosed and/or a means for increasing the temperature of the first reactor, relative to a third homogeneous catalyst formulation. A means for reducing the (α-olefin/ethylene) weight ratio in the first reactor is disclosed and/or reducing the density of the first ethylene interpolymer, relative to a third homogeneous catalyst formulαation.

Multi-Reactor Solution Polymerization

Un proceso de polimerización en solución continuo que comprende: inyectar etileno, un disolvente del proceso, un primer sistema catalizador, opcionalmente una o más α-olefinas y opcionalmente hidrógeno en cada uno de un primer reactor y un segundo reactor configurados en paralelo entre sí para producir una primera corriente de salida que contiene un primer polietileno generado en el primer reactor y una segunda corriente de salida que contiene un segundo polietileno generado en el segundo reactor; pasar la primera corriente de salida y la segunda corriente de salida a un tercer reactor e inyectar en el tercer reactor etileno y, opcionalmente, cada uno de: un disolvente del proceso, una o más α-olefinas, hidrógeno y un segundo sistema catalizador, para producir una tercera corriente de salida que contiene un producto de polietileno final; pasar la tercera corriente de salida a un sistema de desvolatilización para recuperar el producto de polietileno final; en donde el primer reactor funciona a una temperatura al menos 25 °C inferior a la temperatura a la que funciona el segundo reactor; el primer sistema catalizador es un sistema catalizador de un solo sitio; si se inyecta en el tercer reactor, el segundo sistema catalizador es un sistema catalizador de un solo sitio o un sistema catalizador de Ziegler-Natta; y en donde al menos un 10 por ciento en peso del etileno total inyectado en el reactor 1, el reactor 2 y el reactor 3, se inyecta en el reactor 3. A continuous solution polymerization process comprising: injecting ethylene, a process solvent, a first catalyst system, optionally one or more α-olefins, and optionally hydrogen into each of a first reactor and a second reactor configured in parallel with each other to producing a first outlet stream containing a first polyethylene generated in the first reactor and a second outlet stream containing a second polyethylene generated in the second reactor; passing the first outlet stream and the second outlet stream to ...

Ethylene interpolymer products having intermediate branching

This disclosure relates to ethylene interpolymer product having intermediate branching. Intermediate branching was defined as branching that was longer than the branch length due to comonomer and shorter than the entanglement molecular weight (M e ). Intermediately branched ethylene interpolymer products were produced in a continuous solution polymerization process employing an intermediate branching catalyst formulation. Intermediately branched ethylene interpolymer products were characterized by a Non-Comonomer Index Distribution (NCID i ), a melt index from 0.3 to 500 dg/minute, a density from 0.858 to 0.965 g/cm 3 , a polydispersity (M w /M n ) from about 2 to about 25 and a CDBI 50 from about 10% to about 98%. A method based on triple detection cross fractionation chromatography (3D-CFC) was disclosed to measure NCID i .

Means for increasing the molecular weight and decreasing the density of ethylene interpolymers employing mixed homogeneous catalyst formulations

A continuous solution polymerization process is disclosed wherein at least two homogeneous catalyst formulations are employed. A first homogeneous catalyst formulation is employed in a first reactor to produce a first ethylene interpolymer and a second homogeneous catalyst formulation is employed in a second reactor to produce a second ethylene interpolymer. Optionally a third ethylene interpolymer is formed in a third reactor. The resulting ethylene interpolymer products possess desirable properties in a variety of end use applications, for example in film applications. A means for increasing the molecular weight of the first ethylene interpolymer is disclosed and/or a means for increasing the temperature of the first reactor, relative to the third homogeneous catalyst formulation. A means for reducing the (α-olefin/ethylene) weight ratio in the first reactor is disclosed and/or reducing the density of the first ethylene interpolymer, relative to the third homogeneous catalyst formulation.

An improved process to manufacture ethylene interpolymer products

This disclosure relates to an improved solution polymerization process wherein the molecular weight of an ethylene interpolymer product can be increased relative to a comparative process; or at constant ethylene interpolymer molecular weight the improved process can be operated at higher polymerization temperature relative to the comparative process. This disclosure also relates to an improved solution polymerization process wherein an ethylene interpolymer product at target density can be produced at a lower [a-olefin/ethylene] weight ratio in the reactor, relative to a comparative process. Process solvent, ethylene, optional comonomers, optional hydrogen and a bridged metallocene catalyst formulation are injected into one or more reactors to form the ethylene interpolymer product. The catalyst is subsequently deactivated, the solution is optionally passivated and following a phase separation process the ethylene interpolymer product is recovered.

Ethylene interpolymer products and films

This disclosure relates to ethylene interpolymer compositions and films prepared therefrom. Specifically: ethylene interpolymer products having: a dimensionless nonlinear rheology network parameter, Δint., greater than or equal to 0.01, satisfying 0.01×(Z−50)0.78≤Δint.≤0.01×(Z−60)0.78 inequality wherein Z is a normalized molecular weight defined byZ=MwMewhere Mw and Me are the weight average and entanglement molecular weights, and; a residual catalytic metal of from ≥0.03 to ≤5 ppm of hafnium. 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,MwMn,from about 1.7 to about 25 and a Composition Distribution Breadth Index (CDBI50) from about 1% to about 98%.

Ethylene interpolymer products and films

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 = (SCU-TU)/TU, where SCU is the amount of a side chain unsaturation per 100 carbons and TU 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 (Mw/Mn) from about 1.7 to about 25 and a Composition Distribution Breadth Index (CDBI50) from about 1 % to about 98%.

Manufacturing ethylene interpolymer products at higher production rate

This disclosure relates to an improved continuous solution polymerization process wherein production rate is increased. Process solvent, ethylene, optional comonomers, optional hydrogen and a bridged metallocene catalyst formulation are injected into a first reactor to form a first ethylene interpolymer. Optionally, process solvent, ethylene, optional comonomers, optional hydrogen and a bridged metallocene catalyst formulation are injected into a second reactor forming a second ethylene interpolymer. The first and second reactors may be configured in series or parallel modes of operation. Optionally, a third ethylene interpolymer is formed in a third reactor, wherein a homogeneous catalyst formulation or a heterogeneous catalyst formulation is employed. In solution, the first, optional second and optional third ethylene interpolymers are combined, the catalyst is deactivated, the solution is optionally passivated and following a phase separation process an ethylene interpolymer product is recovered.

manufacture of ethylene interpolymers at a higher production rate

Esta divulgação se refere a um processo de polimerização em solução contínua aprimorado em que a taxa de produção é aumentada. Solvente do processo, etileno, comonômero opcional, hidrogênio opcional e uma formulação de catalisador de metaloceno ligado em ponte são injetados em um primeiro reator para formar um primeiro interpolímero de etileno. Opcionalmente, solvente do processo, etileno, comonômero opcional, hidrogênio opcional e uma formulação de catalisador de metaloceno ligado em ponte são injetados em um segundo reator formando um segundo interpolímero de etileno. O primeiro e segundo reatores podem ser configurados modos em série ou paralelos de operação. Opcionalmente, um terceiro interpolímero de etileno é formado em um terceiro reator, em que uma formulação de catalisador homogênea ou uma formulação de catalisador heterogênea é utilizada. Em solução, o primeiro, segundo e terceiro interpolímeros de etileno opcionais são combinados, o catalisador é desativado, a solução é opcionalmente passivada e após um processo de separação de fase um produto interpolímero de etileno é recuperado. This disclosure refers to an improved continuous solution polymerization process in which the production rate is increased. Process solvent, ethylene, optional comonomer, optional hydrogen and a bridged metallocene catalyst formulation are injected into a first reactor to form a first ethylene interpolymer. Optionally, process solvent, ethylene, optional comonomer, optional hydrogen and a bridged metallocene catalyst formulation are injected into a second reactor forming a second ethylene interpolymer. The first and second reactors can be configured in series or parallel modes of operation. Optionally, a third ethylene interpolymer is formed in a third reactor, in which a homogeneous catalyst formulation or a heterogeneous catalyst formulation is used. In solution, the optional first, second and third ethylene interpolymers are combined, the catalyst is deactivated, the ...

Manufactura de productos de interpolimero de etileno a una mayor tasa de produccion.

Esta invención se refiere a un proceso de polimerización en solución continua mejorado en el que se incrementa la velocidad de producción. Solvente de proceso, etileno, monómeros opcionales, hidrógeno opcional y una formulación de catalizador de metaloceno puenteada se inyectan en un primer reactor para formar un primer interpolímero de etileno. Opcionalmente, el solvente de proceso, etileno, monómeros opcionales, hidrógeno opcional y una formulación de catalizador de metaloceno puenteada se inyectan en un segundo reactor formado un segundo interpolímero de etileno. El primero y segundo reactores pueden configurarse en modos de operación en serie o en paralelo. Opcionalmente, se forma un tercer interpolímero de etileno en un tercer reactor, en donde se emplea una formulación de catalizador homogénea o una formulación de catalizador heterogénea. En solución, el primer, el segundo y el tercer interpolímeros de etileno opcionales se combinan, el catalizador se desactiva, la solución se pasiva opcionalmente y después de un proceso de separación de fases se recupera un producto de interpolímero de etileno.

Productos y peliculas de interpolimero de etileno.

Esta descripción se refiere a composiciones de interpolímero de etileno y películas preparadas a partir de las mismas. Específicamente: productos de interpolímero de etileno que tienen: un factor de ramificación de cadena larga adimensional, LCBF, mayor o igual a 0.001; un metal catalítico residual de = 0.03 a = 5 ppm de hafnio, y; una relación de insaturación adimensional, UR, de = -0.40 a = 0.06, en donde UR es definida por la siguiente relación; UR = (SCU-TU)/TU, donde SCU es la cantidad de una insaturación de cadena lateral por 100 carbonos y TU es la cantidad de una insaturación terminal por 100 carbonos, en el producto de interpolímero de etileno. Los productos de interpolímero de etileno descritos tienen un índice de fusión de aproximadamente 0.3 a aproximadamente 500 dg/minuto, una densidad de aproximadamente 0.855 a aproximadamente 0.975 g/cc, una polidispersidad (Mw/Mn) de aproximadamente 1.7 a aproximadamente 25 y un índice de amplitud de distribución de composición (CDBI50) de aproximadamente 1% a aproximadamente 98%.

ethylene interpolymer products and films

A presente invenção refere-se a composições de interpolímero de etileno e filmes preparados a partir dos mesmos. Especificamente: produtos de interpolímero de etileno tendo: um Fator de Ramificação de Cadeia Longa adimensional, LCBF, maior do que ou igual a 0,001; um metal catalítico residual de = 0,03 a = 5 ppm de háfnio, e; uma razão de insaturação adimensional, UR, de = -0,40 a = 0,06, em que UR é definida pela seguinte relação; UR = (SCU-TU)/TU, em que SCU é a quantidade de uma insaturação de cadeia lateral por 100 carbonos e TU é a quantidade de uma insaturação terminal por 100 carbonos, no referido produto de interpolímero de etileno. Os produtos de interpolímero de etileno divulgados têm um índice de fusão de cerca de 0,3 a cerca de 500 dg/minuto, uma densidade de cerca de 0,855 a cerca de 0,975 g/cc, uma polidispersividade (Mw/Mn) de cerca de 1,7 a cerca de 25 e a Índice de Amplitude de Distribuição de Composição (CDBI50) de cerca de 1% a cerca de 98%. The present invention 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 = 0.03 to = 5 ppm of hafnium, and; a dimensionless unsaturation ratio, UR, from = -0.40 to = 0.06, where UR is defined by the following relationship; UR = (SCU-TU) / TU, where SCU is the amount of a 100-carbon side chain unsaturation and TU is the amount of a 100-carbon terminal unsaturation in said ethylene interpolymer product. The disclosed ethylene interpolymer products have a melt index of about 0.3 to about 500 dg / minute, a density of about 0.855 to about 0.975 g / cc, a polydispersity (Mw / Mn) of about 1.7 to about 25 and the Composition Distribution Amplitude Index (CDBI50) from about 1% to about 98%.

Ethylene interpolymer products and films

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 U -T U )/T U , where SC U is the amount of a side chain unsaturation per 100 carbons and T 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 w /M n ) from about 1.7 to about 25 and a Composition Distribution Breadth Index (CDBI 50 ) from about 1 % to about 98%.

Ethylene Interpolymer Products and Films

This disclosure relates to ethylene interpolymer compositions and films prepared therefrom. Specifically: ethylene interpolymer products having: a dimensionless nonlinear rheology network parameter, Δint., greater than or equal to 0.01, satisfying 0.01×(Z−50)0.78≤Δint.≤0.01×(Z−60)0.78 inequality wherein Z is a normalized molecular weight defined byZ=MwMewhere Mw and Me are the weight average and entanglement molecular weights, and; a residual catalytic metal of from ≥0.03 to ≤5 ppm of hafnium. 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,MwMn,from about 1.7 to about 25 and a Composition Distribution Breadth Index (CDBI50) from about 1% to about 98%.

Multi reactor solution polymerization, polyethylene and polyethylene film

This disclosure relates to a continuous solution three reactor polymerization process. Process solvent, ethylene, optional comonomers, optional hydrogen and a single site catalyst system are injected into a first and second reactor configured in parallel to one another. A third reactor receives effluent from the first reactor, the second reactor, or a combination of the first and second reactors. Fresh monomer is feed to the third reactor for further polymerization and to give a final polyethylene product.

Multi reactor solution polymerization

This disclosure relates to a continuous solution three reactor polymerization process. Process solvent, ethylene, optional comonomers, optional hydrogen and a single site catalyst system are injected into a first and second reactor configured in parallel to one another. A third reactor receives effluent from the first reactor, the second reactor, or a combination of the first and second reactors. Fresh monomer is feed to the third reactor for further polymerization and to give a final polyethylene product.

SOLUTION POLYMERIZATION IN MULTIRREATOR, POLYETHYLENE AND POLYETHYLENE FILM

a presente revelação refere-se a um processo de polimerização em três reatores de solução contínua. o solvente de processo, etileno, comonômeros opcionais, hidrogênio opcional e um sistema de catalisador de sítio único são injetados em um primeiro e em um segundo reator configurados em paralelo entre si. um terceiro reator recebe efluente a partir do primeiro reator, do segundo reator, ou uma combinação do primeiro e segundo reatores. carrega-se monômero fresco ao terceiro reator para uma polimerização adicional e fornecer um produto de polietileno final. the present disclosure relates to a polymerization process in three continuous solution reactors. the process solvent, ethylene, optional comonomers, optional hydrogen and a single site catalyst system are injected into a first and a second reactor configured in parallel with each other. a third reactor receives effluent from the first reactor, the second reactor, or a combination of the first and second reactors. fresh monomer is charged to the third reactor for further polymerization and to provide a final polyethylene product.

An improved process to manufacture ethylene interpolymer products

This disclosure relates to an improved solution polymerization process wherein the molecular weight of an ethylene interpolymer product can be increased relative to a comparative process; or at constant ethylene interpolymer molecular weight the improved process can be operated at higher polymerization temperature relative to the comparative process. This disclosure also relates to an improved solution polymerization process wherein an ethylene interpolymer product at target density can be produced at a lower [a-olefin/ethylene] weight ratio in the reactor, relative to a comparative process. Process solvent, ethylene, optional comonomers, optional hydrogen and a bridged metallocene catalyst formulation are injected into one or more reactors to form the ethylene interpolymer product. The catalyst is subsequently deactivated, the solution is optionally passivated and following a phase separation process the ethylene interpolymer product is recovered.

Processes for producing polyethylene containing recycled polymeric material

Disclosed herein are polymerization processes where recycled polymeric material is fed to polymerization process to produce a blend of virgin polymer with recycled polymeric content.

Multi-Reactor Solution Polymerization, Polyethylene and Polyethylene Film

Una composición de producto de polietileno, que comprende: de un 35 % a un 75 % en peso de un primer polietileno que es un copolímero de etileno que tiene una densidad (ASTM D792-13) de 0,875 g/cm3 a 0,916 g/cm3, un índice de fusión I2 (ASTM D1238, a 190 °C usando una carga de 2,16 kg) de 0,1 dg/min a 5 dg/min, y una distribución de peso molecular Mw/Mn (ASTM D6474-12) de 1,6 a 2,4; de un 10 % a un 40 % en peso de un segundo polietileno seleccionado de un copolímero de etileno o de un homopolímero de etileno que tiene una densidad de 0,945 g/cm3 a 0,975 g/cm3, un índice de fusión I2 de 1,0 dg/min a 20 dg/min, y una distribución de peso molecular Mw/Mn de 1,6 a 2,4; y de un 10 % a un 40 % en peso de un tercer polietileno que es un copolímero de etileno que tiene una densidad de 0,880 g/cm3 a 0,936 g/cm3, un índice de fusión I2 de 0,1 dg/min a 100 dg/min, y una distribución de peso molecular Mw/Mn que es mayor que la distribución de peso molecular Mw/Mn de cualquiera del primer o del segundo componente de polímero de etileno; en donde la composición de producto de polietileno tiene una densidad de <= 0,939 g/cm3, un índice de fusión I2 de 0,1 dg/min a 10 dg/min, un perfil unimodal en un cromatógrafo de filtración en gel (GPC) y un perfil multimodal en un análisis de TREF. A polyethylene product composition, comprising: 35% to 75% by weight of a first polyethylene that is an ethylene copolymer having a density (ASTM D792-13) of 0.875 g/cm3 to 0.916 g/cm3 , an I2 melt index (ASTM D1238, at 190 °C using a 2.16 kg load) of 0.1 dg/min to 5 dg/min, and a molecular weight distribution Mw/Mn (ASTM D6474-12 ) from 1.6 to 2.4; from 10% to 40% by weight of a second polyethylene selected from an ethylene copolymer or an ethylene homopolymer having a density of from 0.945 g/cm3 to 0.975 g/cm3, a melt index I2 of 1.0 dg/min to 20 dg/min, and a molecular weight distribution Mw/Mn of 1.6 to 2.4; and from 10% to 40% by weight of a third polyethylene which is an ethylene copolymer ...

an improved process for making ethylene interpolymer products

&nbsp; Esta divulgação se refere a um processo de polimerização de solução melhorado em que o peso molecular de um produto de interpolímero de etileno pode ser aumentado em relação a um processo comparativo; ou em interpolímero de etileno de peso molecular constante o processo melhorado pode ser operado em temperatura de polimerização mais alta em relação ao processo comparativo. Esta divulgação também se refere a um processo de polimerização de solução melhorado em que um produto de interpolímero de etileno em densidade alvo pode ser produzido em uma razão em peso de [a-olefina/etileno] mais baixa no reator, em relação a um processo comparativo. Solvente do processo, etileno, comonômero opcional, hidrogênio opcional e uma formulação de catalisador de metaloceno ligado em ponte são injetados em um ou mais reatores para formar o produto de interpolímero de etileno. O catalisador é subsequentemente desativado, a solução é opcionalmente passivada e a seguir de um processo de separação de fase o produto de interpolímero de etileno é recuperado. &nbsp; This disclosure relates to an improved solution polymerization process in which the molecular weight of an ethylene interpolymer product can be increased over a comparative process; or in ethylene interpolymer of constant molecular weight the improved process can be operated at a higher polymerization temperature compared to the comparative process. This disclosure also refers to an improved solution polymerization process in which a target density ethylene interpolymer product can be produced at a lower [a-olefin / ethylene] weight ratio in the reactor, relative to a process comparative. Process solvent, ethylene, optional comonomer, optional hydrogen and a bridged metallocene catalyst formulation are injected into one or more reactors to form the ethylene interpolymer product. The catalyst is subsequently deactivated, the solution is optionally passivated and after a phase separation process the ethylene ...

Plastomers with rapid crystallization rates

Ethylene copolymer compositions having a density of 0.902 g/cm 3 or less exhibit rapid crystallization behavior. The ethylene copolymer compositions comprise a first ethylene copolymer, a second ethylene copolymer and optionally a third ethylene copolymer, where the number average molecular weight of the first ethylene copolymer is greater than the number average molecular weight of the second ethylene copolymer. The ethylene copolymer compositions are useful in the formation of monolayer and multilayer films.

Plastômeros com rápidas taxas de cristalização

plastômeros com rápidas taxas de cristalização. a presente invenção refere-se a composições de copolímero de etileno com uma densidade de 0,902 g / cm3 ou menos que exibem comportamento de cristalização rápida. as composições de copolímero de etileno compreendem um primeiro copolímero de etileno, um segundo copolímero de etileno e opcionalmente um terceiro copolímero de etileno, onde o peso molecular médio numérico do primeiro copolímero de etileno é maior que o peso molecular médio numérico do segundo copolímero de etileno. as composições de copolímero de etileno são úteis na formação de filmes monocamada e multicamada.

Very low density polyethylene with rapid crystallization rates

Ethylene copolymer compositions having a density of from 0.860 to 0.910 g/cm 3 exhibit rapid crystallization behavior. The ethylene copolymer compositions comprise a first ethylene copolymer, a second ethylene copolymer and a third ethylene copolymer, where the number average molecular weight of the first ethylene copolymer is greater than the number average molecular weight of the second ethylene copolymer and the third ethylene copolymer. The ethylene copolymer compositions are useful in the formation of monolayer and multilayer films.

Plastomers with rapid crystallization rates

Ethylene copolymer compositions having a density of 0.902 g/cm3 or less exhibit rapid crystallization behavior. The ethylene copolymer compositions comprise a first ethylene copolymer, a second ethylene copolymer and optionally a third ethylene copolymer, where the number average molecular weight of the first ethylene copolymer is greater than the number average molecular weight of the second ethylene copolymer. The ethylene copolymer compositions are useful in the formation of monolayer and multilayer films.

Manufacturing ethylene interpolymer products at higher production rate

This disclosure relates to an improved continuous solution polymerization process wherein production rate is increased. Process solvent, ethylene, optional comonomers, optional hydrogen and a bridged metallocene catalyst formulation are injected into a first reactor to form a first ethylene interpolymer. Optionally, process solvent, ethylene, optional comonomers, optional hydrogen and a bridged metallocene catalyst formulation are injected into a second reactor forming a second ethylene interpolymer. The first and second reactors may be configured in series or parallel modes of operation. Optionally, a third ethylene interpolymer is formed in a third reactor, wherein a homogeneous catalyst formulation or a heterogeneous catalyst formulation is employed. In solution, the first, optional second and optional third ethylene interpolymers are combined, the catalyst is deactivated, the solution is optionally passivated and following a phase separation process an ethylene interpolymer product is recovered.

Polietileno de densidade muito baixa com taxas de cristalização rápidas

polietileno de densidade muito baixa com taxas de cristalização rápidas. as composições de copolímero de etileno com uma densidade de 0,860 a 0,910 g/cm3 exibem um comportamento de cristalização rápida. as composições de copolímero de etileno compreendem um primeiro copolímero de etileno, um segundo copolímero de etileno e um terceiro copolímero de etileno, onde o peso molecular médio numérico do primeiro copolímero de etileno é maior que o peso molecular médio numérico do segundo copolímero de etileno e do terceiro copolímero de etileno. as composições de copolímero de etileno são úteis na formação de filmes monocamada e multicamada.

Productos de interpolimero de etileno con ramificacion intermedia.

Esta descripción se relaciona con un producto interpolímero de etileno que tiene ramificaciones intermedias. La ramificación intermedia se define como la ramificación que es más larga que la longitud de ramificación debida al comonómero y más corta que el peso molecular de entrelazamiento (Me). Los productos interpolímeros de etileno ramificados de forma intermedia se produjeron en un proceso de polimerización en solución contínua que emplea una formulación de catalizador de ramificación intermedia. Los productos interpolímeros de etileno ramificados de forma intermedia se caracterizan por una Distribución de Índice de No Comonómeros (NCIDi), un índice de fusión desde 0.3 a 500 dg/minuto, una densidad desde 0.858 a 0.965 g/cm3, una polidispersidad (Mw/Mn) desde aproximadamente 2 a aproximadamente 25 y un CDBI50 desde aproximadamente 10% a aproximadamente 98%. Se describe un método basado en una cromatografía de fraccionamiento cruzado de triple detección (3D-CFC) para medir el NCIDi.

Polietileno de muy baja densidad con velocidades de cristalizacion rapidas.

Las composiciones de copolímero de etileno que tienen una densidad de 0.860 a 0.910 g/cm3 exhiben un comportamiento de cristalización rápido. Las composiciones de copolímero de etileno comprenden un primer copolímero de etileno, un segundo copolímero de etileno y un tercer copolímero de etileno, en donde el peso molecular promedio en número del primer copolímero de etileno es mayor que el peso molecular promedio en número del segundo copolímero de etileno y el tercer copolímero de etileno. Las composiciones de copolímero de etileno son útiles en la formación de películas monocapa y de múltiples capas.

Plastomeros con velocidades de cristalizacion rapidas.

Las composiciones de copolímero de etileno que tienen una densidad de 0.902 g/cm3 o menos exhiben un comportamiento de cristalización rápido. Las composiciones de copolímero de etileno comprenden un primer copolímero de etileno, un segundo copolímero de etileno y opcionalmente un tercer copolímero de etileno, en donde el peso molecular promedio en número del primer copolímero de etileno es mayor que el peso molecular promedio en número del segundo copolímero de etileno. Las composiciones de copolímero de etileno son útiles en la formación de películas monocapa y de múltiples capas.

Multi reactor solution polymerization

This disclosure relates to a continuous solution three reactor polymerization process. Process solvent, ethylene, optional comonomers, optional hydrogen and a single site catalyst system are injected into a first and second reactor configured in parallel to one another. A third reactor receives effluent from the first reactor, the second reactor, or a combination of the first and second reactors. Fresh monomer is feed to the third reactor for further polymerization and to give a final polyethylene product.

Very low density polyethylene with rapid crystallization rates

Ethylene copolymer compositions having a density of from 0.860 to 0.910 g/cm3 exhibit rapid crystallization behavior. The ethylene copolymer compositions comprise a first ethylene copolymer, a second ethylene copolymer and a third ethylene copolymer, where the number average molecular weight of the first ethylene copolymer is greater than the number average molecular weight of the second ethylene copolymer and the third ethylene copolymer. The ethylene copolymer compositions are useful in the formation of monolayer and multilayer films.

Produto de interpolímero de etileno e filme de polietileno

Um processo de polimerização de solução contínuo é divulgado em que pelo menos duas formulações de catalisador são utilizadas. Uma primeira formulação de catalisador homogêneo é utilizada em um primeiro reator para produzir um primeiro interpolímero de etileno e uma primeira formulação de catalisador heterogêneo é utilizada em um segundo reator para produzir um segundo interpolímero de etileno. Opcionalmente um terceiro interpolímero de etileno é formado em um tercei-ro reator. Os produtos de interpolímero de etileno resultantes possuem propriedades desejáveis em uma variedade de aplicações finais, por exemplo em aplicações de filme. Um meio para aumentar o peso molecular do primeiro interpolímero de etileno é divulgado e/ou um meio para aumentar a temperatura do primeiro reator, em relação a uma terceira formulação de catalisador homogêneo. Um meio para reduzir a razão em peso de (a-olefina/etileno) no primeiro reator é divulgado e/ou reduzir a densidade do primeiro interpolímero de etileno, em relação a uma terceira formulação de catalisador homogêneo.

Produtos de interpolímero de etileno

A presente invenção refere-se a composições de interpolímero de etileno e filmes preparados a partir dos mesmos. Especificamente: produtos de interpolímero de etileno tendo: um Fator de Ramificação de Cadeia Longa adimensional, LCBF, maior do que ou igual a 0,001; um metal catalítico residual de = 0,03 a = 5 ppm de háfnio, e; uma razão de insaturação adimensional, UR, de = -0,40 a = 0,06, em que UR é definida pela seguinte relação; UR = (SCU-TU)/TU, em que SCU é a quantidade de uma insaturação de cadeia lateral por 100 carbonos e TU é a quantidade de uma insaturação terminal por 100 carbonos, no referido produto de interpolímero de etileno. Os produtos de interpolímero de etileno divulgados têm um índice de fusão de cerca de 0,3 a cerca de 500 dg/minuto, uma densidade de cerca de 0,855 a cerca de 0,975 g/cc, uma polidispersividade (Mw/Mn) de cerca de 1,7 a cerca de 25 e a Índice de Amplitude de Distribuição de Composição (CDBI50) de cerca de 1% a cerca de 98%.

Nonlinear rheology of ethylene interpolymer compositions

This disclosure relates to ethylene interpolymer compositions, films prepared therefrom and a nonlinear rheology method capable of determining presence of long-chain branched structures in these ethylene interpolymer compositions. Ethylene interpolymer compositions disclosed herein specifically relates to ethylene interpolymer products having: a dimensionless nonlinear rheology network parameter, Δ int ., greater than or equal to 0.01, satisfying 0.01×(Z−48) 0.78 ≤Δ int ≤0.01×(Z−60) 0.78 inequality wherein Z is a normalized molecular weight defined by (I) where Mw and Me are the weight average and entanglement molecular weights; and a residual catalytic metal of from ≥0.03 to ≤5 ppm of hafnium. 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 w /M n , from about 1.7 to about 25 and a Composition Distribution Breadth Index (CDBI 50 ) from about 1% to about 98%.