Dow Global Technolgoies LLC

Ravi S Dixit

Kalyan Sehanobish

Noorallah Jivraj

Frederik E Gemoets

Johan Vanvoorden

Jozef Van Dun

Patrick J C Schouterden

Patrick J Schouterden

Ruddy A J Nicasy

Peter F Van Den Berghen

Ruddy Nicasy

Peter F M Van Den Berghen

Johan Vanveorden

Jozef J Van Dun

Jozef J VanDun

Peter F M Van Den Berghe

Frederick E L Gemoets

Jozef J Vandun

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 &#x2212;20&#xb0; 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, of less than about 8. In some embodiments, the HMW component is characterized by a reverse comonomer distribution.

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, of less than about 8. 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, 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 &minus;20&deg; C. In some embodiments, the HMW component is characterized by a reverse comonomer distribution.

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Lake Jackson, TX, United States of America

Ravi S Dixit