BIMODAL POLYETHYLENE COMPOSITION AND ARTICLES MADE THEREFROM

The invention relates to a polyethylene composition with a bimodal molecular weight distribution and articles made therefrom, such as high topload blow moldings and transmission and distribution pipes. The composition comprises a low-molecular-weight (LMW) ethylene homopolymer component and a homogeneous, high-molecular-weight (HMW) ethylene interpolymer component, wherein the LMW component is characterized as having a molecular weight distribution, MWD, of less than about 8. The composition is characterized as having a bimodal molecular weight distribution, and a ductile-brittle transition temperature, T, of less than −20° C. In some embodiments, the HMW component is characterized by a reverse comonomer distribution. 154-. (canceled)55. A polyethylene composition comprising a low molecular weight (LMW) ethylene homopolymer component , and a high molecular weight (HMW) ethylene interpolymer component , andwherein the high molecular weight component has a reverse comonomer distribution.56. The composition of claim 55 , wherein claim 55 , for the high molecular weight component claim 55 , the molar comonomer content of interpolymer fractions having a Mw greater than claim 55 , or equal to claim 55 , 300 claim 55 ,000 g/mole claim 55 , is at least 25 percent higher than the molar comonomer content of interpolymer fractions having a Mw less than claim 55 , or equal to claim 55 , 100 claim 55 ,000 g/mole.57. The composition of claim 55 , wherein the high molecular weight component has a Mw/Mn less than 4.8.58. The composition of claim 55 , wherein the high molecular weight component has a Mw from about 100 claim 55 ,000 to about 600 claim 55 ,00 g/mole.59. The composition of claim 55 , wherein the composition has a Mw/Mn less than 20. This application claims priority to U.S. Provisional Patent Application Ser. No. 60/313,357 filed on Aug. 17, 2001, and is related to U.S. Provisional Application Ser. No. 60/313,176 filed Aug. 17, 2001, the disclosures of which are ...

Bimodal polyethylene composition and articles made therefrom

The invention relates to a polyethylene composition with a bimodal molecular weight distribution, methods for making the same, and articles made therefrom, such as high topload blow moldings and transmission and distribution pipes. The composition comprises a low-molecular-weight (LMW) ethylene homopolymer component and a homogeneous, high-molecular-weight (HMW) ethylene interpolymer component, wherein the LMW component is characterized as having a molecular weight distribution, MWD L , of less than about 8. In some embodiments, the HMW component is characterized by a reverse comonomer distribution.

Bimodal polyethylene composition and articles made therefrom

The invention relates to a polyethylene composition with a bimodal molecular weight distribution and articles made therefrom, such as high topload blow moldings and transmission and distribution pipes. The composition comprises a low-molecular-weight (LMW) ethylene homopolymer component and a homogeneous, high-molecular-weight (HMW) ethylene interpolymer component, wherein the LMW component is characterized as having a molecular weight distribution, MWD L , of less than about 8. The composition is characterized as having a bimodal molecular weight distribution, and a ductile-brittle transition temperature, T db , of less than −20° C. In some embodiments, the HMW component is characterized by a reverse comonomer distribution.

Bimodal polyethylene composition and articles made therefrom

The invention relates to a polyethylene composition with a bimodal molecular weight distribution, methods for making the same, and articles made therefrom, such as high topload blow moldings and transmission and distribution pipes. The composition comprises a low-molecular-weight (LMW) ethylene homopolymer component and a homogeneous, high-molecular-weight (HMW) ethylene interpolymer component, wherein the LMW component is characterized as having a molecular weight distribution, MWD L , of less than about 8. In some embodiments, the HMW component is characterized by a reverse comonomer distribution.

Bimodal polyethylene composition and articles made thererom

The invention relates to a polyethylene composition with a bimodal molecular weight distribution and articles made therefrom, such as high topload blow moldings and transmission and distribution pipes. The composition comprises a low-molecular-weight (LMW) ethylene homopolymer component and a homogeneous, high-molecular-weight (HMW) ethylene interpolymer component, wherein the LMW component is characterized as having a molecular weight distribution, MWD L , of less than about 8. The composition is characterized as having a bimodal molecular weight distribution, and a ductile-brittle transition temperature, T db , of less than −20° C. In some embodiments, the HMW component is characterized by a reverse comonomer distribution.

Bimodal polyethylene composition and articles made therefrom

The invention relates to a polyethylene composition with a bimodal molecular weight distribution and articles made therefrom, such as high topload blow moldings and transmission and distribution pipes. The composition comprises a low-molecular-weight (LMW) ethylene homopolymer component and a homogeneous, high-molecular-weight (HMW) ethylene interpolymer component, wherein the LMW component is characterized as having a molecular weight distribution, MWD L , of less than about 8. The composition is characterized as having a bimodal molecular weight distribution, and a ductile-brittle transition temperature, T db , of less than −20° C. In some embodiments, the HMW component is characterized by a reverse comonomer distribution.

Bimodal polyethylene composition and articles made therefrom

The invention relates to a polyethylene composition with a bimodal molecular weight distribution and articles made therefrom, such as high topload blow moldings and transmission and distribution pipes. The composition comprises a low-molecular-weight (LMW) ethylene homopolymer component and a homogeneous, high-molecular-weight (HMW) ethylene interpolymer component, wherein the LMW component is characterized as having a molecular weight distribution, MWD L , of less than about 8. The composition is characterized as having a bimodal molecular weight distribution, and a ductile-brittle transition temperature, T db , of less than −20° C. In some embodiments, the HMW component is characterized by a reverse comonomer distribution.

Bimodal polyethylene pipe composition and article made therefrom

The invention relates to a polyethylene composition with a bimodal molecular weight distribution and articles made therefrom. The composition comprises a low-molecular-weight (LMW) ethylene homopolymer component and a homogeneous, high-molecular-weight (HMW) ethylene interpolymer component, wherein the LMW component is characterized as having a molecular weight distribution, MWD L , of less than about 8. In some embodiments, the HMW component is characterized by a reverse comonomer distribution.

Bimodal polyethylene composition and articles made therefrom

The invention relates to a polyethylene composition with a bimodal molecular weight distribution and articles made therefrom, such as high topload blow moldings and transmission and distribution pipes. The composition comprises a low-molecular-weight (LMW) ethylene homopolymer component and a homogeneous, high-molecular-weight (HMW) ethylene interpolymer component, wherein the LMW component is characterized as having a molecular weight distribution, MWD L , of less than about 8. The composition is characterized as having a bimodal molecular weight distribution, and a ductile-brittle transition temperature, T db , of less than −20° C. In some embodiments, the HMW component is characterized by a reverse comonomer distribution.

Bimodal polyethylene pipe composition and article made therefrom

The invention relates to a polyethylene composition with a bimodal molecular weight distribution and articles made therefrom. The composition comprises a low-molecular-weight (LMW) ethylene homopolymer component and a homogeneous, high-molecular-weight (LMW) ethylene interpolymer component, wherein the LMW component is characterized as having a molecular weight distribution, MWD L , of less than about 8. In some embodiments, the HMW component is characterized by a reverse comonomer distribution.

Bimodal polyethylene composition and articles made therefrom

The invention relates to a polyethylene composition with a bimodal molecular weight distribution and articles made therefrom, such as high topload blow moldings and transmission and distribution pipes. The composition comprises a low-molecular-weight (LMW) ethylene homopolymer component and a homogeneous, high-molecular-weight (HMW) ethylene interpolymer component, wherein the LMW component is characterized as having a molecular weight distribution, MWD L , of less than about 8. The composition is characterized as having a bimodal molecular weight distribution, and a ductile-brittle transition temperature, T db , of less than −20° C. In some embodiments, the HMW component is characterized by a reverse comonomer distribution.

Slurry polymerization process and polymer compositions

Accordingly, the subject invention provides polymer composition comprising an ethylene homopolymer or an interpolymer of ethylene at least one compound represented by the formula H2C = CHR wherein R is a C1 - C20linear, branched or cyclic alkyl group or a C6 - C20aryl group, or a C4-C20 linear, branched or cyclic diene, said polymer composition characterized as having a percent swell of at least 175 percent, a monomodal molecular weight distribution, and an Mw/Mn of from 1.5 to 10. Such polymers are obtainable through the use of supported catalyst derived from functionalized catalyst supports in slurry polymerization processes.

Bimodal polyethylene composition and articles made therefrom

The invention relates to a polyethylene composition with a bimodal molecular weight distribution and articles made therefrom, such as high topload blow moldings and transmission and distribution pipes. The composition comprises a low-molecular-weight (LMW) ethylene homopolymer component and a homogeneous, high-molecular-weight (HMW) ethylene interpolymer component, wherein the LMW component is characterized as having a molecular weight distribution, MWD L, of less than about 8. The composition is characterized as having a bimodal molecular weight distribution, and a ductile-brittle transition temperature, Tdb, of less than -20 °C. In some embodiments, the HMW component is characterized by a reverse comonomer distribution.

Bimodal polyethylene composition and articles made therefrom

The invention relates to a polyethylene composition with a bimodal molecular weight distribution and articles made therefrom, such as high topload blow moldings and transmission and distribution pipes. The composition comprises a low-molecular-weight (LMW) ethylene homopolymer component and a homogeneous, high-molecular-weight (HMW) ethylene interpolymer component, wherein the LMW component is characterized as having a molecular weight distribution, MWDL, of less than about 8. The composition is characterized as having a bimodal molecular weight distribution, and a ductile-brittle transition temperature, Tdb, of less than −20° C. In some embodiments, the HMW component is characterized by a reverse comonomer distribution.

Bimodal polyethylene composition and articles made therefrom

The invention relates to a polyethylene composition with a bimodal molecular weight distribution and articles made therefrom, such as high topload blow moldings and transmission and distribution pipes. The composition comprises a low-molecular-weight (LMW) ethylene homopolymer component and a homogeneous, high-molecular-weight (HMW) ethylene interpolymer component, wherein the LMW component is characterized as having a molecular weight distribution, MWD L, of less than about 8. The composition is characterized as having a bimodal molecular weight distribution, and a ductile-brittle transition temperature, Tdb, of less than -20 ~C. In some embodiments, the HMW component is characterized by a reverse comonomer distribution.

BIMODAL POLYETHYLENE COMPOSITION AND OBJECTS THEREOF

Bimodal polyethylene composition and articles made therefrom

The invention relates to a polyethylene composition with a bimodal molecular weight distribution and articles made therefrom, such as high topload blow moldings and transmission and distribution pipes. The composition comprises a low-molecular-weight (LMW) ethylene homopolymer component and a homogeneous, high-molecular-weight (HMW) ethylene interpolymer component, wherein the LMW component is characterized as having a molecular weight distribution, MWDL, of less than about 8. The composition is characterized as having a bimodal molecular weight distribution, and a ductile-brittle transition temperature, Tdb, of less than −20° C. In some embodiments, the HMW component is characterized by a reverse comonomer distribution.

Bimodal polyethylene composition and articles made therefrom

BIMODAL POLYETHYLENE COMPOSITION AND OBJECTS THEREOF

Bimodal polyethylene composition and articles made therefrom

The invention relates to a polyethylene composition with a bimodal molecular weight distribution and articles made therefrom, such as high topload blow moldings and transmission and distribution pipes. The composition comprises a low-molecular-weight (LMW) ethylene homopolymer component and a homogeneous, high-molecular-weight (HMW) ethylene interpolymer component, wherein the LMW component is characterized as having a molecular weight distribution, MWD L, of less than about 8. The composition is characterized as having a bimodal molecular weight distribution, and a ductile-brittle transition temperature, Tdb, of less than -20 °C. In some embodiments, the HMW component is characterized by a reverse comonomer distribution.

Bimodal polyethylene composition and articles made therefrom

The invention relates to a polyethylene composition with a bimodal molecular weight distribution and articles made therefrom, such as high topload blow moldings and transmission and distribution pipes. The composition comprises a low-molecular-weight (LMW) ethylene homopolymer component and a homogeneous, high-molecular-weight (HMW) ethylene interpolymer component, wherein the LMW component is characterized as having a molecular weight distribution, MWD L, of less than about 8. The composition is characterized as having a bimodal molecular weight distribution, and a ductile-brittle transition temperature, Tdb, of less than -20 ~C. In some embodiments, the HMW component is characterized by a reverse comonomer distribution.

Slurry polymerization process and polymer compositions

Accordingly, the subject invention provides polymer composition comprising an ethylene homopolymer or an interpolymer of ethylene at least one compound represented by the formula H2C = CHR wherein R is a C1 - C20linear, branched or cyclic alkyl group or a C6 - C20aryl group, or a C4-C20 linear, branched or cyclic diene, said polymer composition characterized as having a percent swell of at least 175 percent, a monomodal molecular weight distribution, and an Mw/Mn of from 1.5 to 10. Such polymers are obtainable through the use of supported catalyst derived from functionalized catalyst supports in slurry polymerization processes.

Bimodale polyethylenzusammensetzung und gegenstände daraus