Chevron Phillips Chemical Company LP

Phillips Petroleum Company

Other

Chevron Philips Chemical Company, LP

Max Paul Mcdaniel

Elizabeth Ann Benham

Joseph John Bergmeister

Joseph Samuel Shveima

Gerhard Kurt Guenther

Ashish M. Sukhadia

John Dale Stewart

Eric Tsu-yin Hsieh

Rex Leo Bobsein

Steven Joseph Secora

Ashish M Sukhadia

Qing R Yang

Max P McDaniel

Yongwoo Inn

Chung Ching Tso

Errun Ding

Joel L Martin

Youlu Yu

Guylaine St Jean

Michael D Jensen

Vivek Rohatgi

Matthew G Thorn

Jeremy M Praetorius

Paul J DesLauriers

Daniel G Hert

John T Blagg

Lili Cui

Rajendra K Krishnaswamy

Randall S Muninger

Gary G Jerdee

Max P Mcdaniel

Qing Yang

Carlos A Cruz

Ted H Cymbaluk

Albert P Masino

Randy S Muninger

Elizabeth Mary Lanier

M Bruce Welch

Kathy S Collins

Mark L Hlavinka

Syriac J Palackal

Anthony P Eaton

Richard M Buck

David C Rohlfing

Christopher E Wittner

William R Coutant

Joseph S Shveima

William M Whitte

Paul J Deslauriers

Mark E Kertok

Aaron M Osborn

Jared L Barr

Jim D Byers

Shirley J Martin

Jerry T Lanier

Kiplin D Cowan

John R Rathman

Jay M Chaffin

Lloyd W Guatney

Alfred E Brown, Jr

Jay Janzen

Brandy Rutledge-Ryal

William J Fisher

Lawrence Szmutko

Kelly Frey

Bill Bridendolph

Louis Moore, Jr

Sarah Eppinger

David C Rolfing

Gil R Hawley

Rex L Bobsein

Steven J Secora

Eric T Hsieh

Joseph J Bergmeister

David A Soules

Edwin Boudreaux, Jr

Kumudini C Jayaratne

John D Stewart

Gary D Jerdee

J Todd Lanier

Mark J Dreiling

Gerhard K Guenther

Kevin J Hess

Pamela L Maeger

Jerry Stark

Randy L Muninger

Rhutesh K Shah

Louis Moore

Shawn R Kennedy

Vivek Rohati

Alfred E Brown

Kiplan D Cowan

Paul J Des Lauriers

Eric Tsu-Yin Hsieh

Guylaine STJEAN

Ethylene-based polymers having a density from 0.94 to 0.96 g/cm, a Mn from 5,000 to 14,000 g/mol, a ratio of Mw/Mn from 18 to 40, and at least one of a PENT value at 2.4 MPa of at least 11,500 hr and/or a W90 from 7.5 to 15 wt. % are disclosed. Additional ethylene polymers can have the same density, Mn, and Mw/Mn values, as well as a relaxation time from 0.5 to 3.5 sec, a CY-a parameter from 0.48 to 0.68, a HLMI from 5 to 11 g/10 min, a viscosity at HLMI from 3,000 to 7,500 Pa-sec, and a higher molecular weight component (HMW) and a lower molecular weight (LMW) component, in which a ratio of the number of SCBs at Mp of the HMW component to the number of SCBs at Mp of the LMW component is from 3.5 to 8.

Dual metallocene bimodal HDPE resins with improved stress crack resistance

Disclosed herein are ethylene-based polymers generally characterized by a melt index of less than 15 g/10 min, a density from 0.91 to 0.945 g/cm, a CY-a parameter at 190° C. from 0.2 to 0.6, an average number of long chain branches per 1,000,000 total carbon atoms of the polymer in a molecular weight range of 500,000 to 2,000,000 g/mol of less than 5, and a maximum ratio of η/3η at an extensional rate of 0.03 secin a range from 3 to 15. The ethylene polymers have substantially no long chain branching in the high molecular weight fraction of the polymer, but instead have significant long chain branching in the lower molecular weight fraction, such that polymer melt strength and bubble stability are maintained for the fabrication of blown films and other articles of manufacture. These ethylene polymers can be produced using a dual catalyst system containing a single atom bridged metallocene compound with an indenyl group and a cyclopentadienyl group, and an unbridged hafnium metallocene compound with two cyclopentadienyl groups.

Dual catalyst system for producing LLDPE and MDPE copolymers with long chain branching for film applications

Ethylene-based polymers are characterized by a melt index less than 1 g/10 min, a density from 0.94 to 0.965 g/cm, a Mw from 100,000 to 250,000 g/mol, a relaxation time from 0.5 to 3 sec, and an average number of long chain branches (LCBs) per 1,000,000 total carbon atoms in a molecular weight range of 300,000 to 900,000 g/mol that is greater than that in a molecular weight range of 1,000,000 to 2,000,000 g/mol, or an average number of LCBs per 1,000,000 total carbon atoms in a molecular weight range of 1,000,000 to 2,000,000 g/mol of less than or equal to about 5 and a maximum ratio of η/3η at an extensional rate of 0.1 secfrom 1.2 to 10. These polymers have substantially no long chain branching in the high molecular weight fraction of the polymer, but instead have significant long chain branching in a lower molecular weight fraction, such that polymer melt strength and parison stability are maintained for the fabrication of blow molded products and other articles of manufacture. These ethylene polymers can be produced using a dual catalyst system containing a single or two atom bridged metallocene compound with two indenyl groups, and a single atom bridged metallocene compound with a fluorenyl group and a cyclopentadienyl group.

Dual catalyst system for producing polyethylene with long chain branching for blow molding applications

Ethylene-based polymers are generally characterized by a high load melt index of less than 12 g/10 min, a weight-average molecular weight from 200,000 to 550,000 g/mol, a number-average molecular weight from 18,000 to 48,000 g/mol, a CY-a parameter of less than 0.12, a tan &#x3b4; at 0.1 secfrom 0.5 to 0.9 degrees, a tan &#x3b4; at 100 secfrom 0.5 to 0.75 degrees, and a viscosity at 0.001 secfrom 1.3&#xd7;10to 1&#xd7;10Pa-sec. These ethylene polymers can be produced by peroxide-treating a bimodal molecular weight distribution dual metallocene-catalyzed resin, and can be used to produce blow molded bottles and other blow molded products.

Peroxide treated blow molding polymers with increased weight swell and constant die swell

Disclosed are ethylene polymer compositions containing a homogeneously-branched first ethylene polymer component and 15-35 wt. % of a homogeneously-branched second ethylene polymer component of higher density than the first ethylene polymer component. The ethylene polymer composition can be characterized by a density from 0.912 to 0.925 g/cm, a ratio of Mw/Mn from 2 to 5, a melt index less than 2 g/10 min, and a CY-a parameter at 190&#xb0; C. from 0.35 to 0.7. These polymer compositions have the excellent dart impact strength and optical properties of a metallocene-catalyzed LLDPE, but with improved machine direction tear resistance, and can be used in blown film and other end-use applications. Further, methods for improving film Elmendorf tear strength also are described.

Dual component LLDPE copolymers with improved impact and tear resistance, and methods of their preparation

Disclosed herein are ethylene-based polymers generally characterized by a density of at least 0.94 g/cm, a high load melt index from 4 to 20 g/10 min, a zero-shear viscosity at 190&#xb0; C. from 20,000 to 400,000 kPa-sec, and a relaxation time at 190&#xb0; C. from 225 to 3000 sec. These ethylene polymers can be produced by peroxide-treating a broad molecular weight distribution Ziegler-catalyzed resin, and can be used in large diameter, thick wall pipes and other end-use applications.

Bimodal polyethylene resins and pipes produced therefrom

Disclosed herein are ethylene-based polymers having low densities and narrow molecular weight distributions, but high melt strengths for blown film processing. Such polymers can be produced by peroxide-treating a metallocene-catalyzed resin.

Peroxide treated metallocene-based polyolefins with improved melt strength

Disclosed are ethylene polymer compositions containing a homogeneously-branched first ethylene polymer component and a homogeneously-branched second ethylene polymer component of higher density than the first ethylene polymer component. The ethylene polymer composition can be characterized by a density from 0.912 to 0.925 g/cm, a melt index less than 3.5 g/10 min, and a CY-a parameter at 190&#xb0; C. from 0.25 to 0.65. These polymer compositions have the excellent dart impact strength and optical properties of a metallocene-catalyzed LLDPE, but with improved machine direction tear resistance, and can be used in blown film and other end-use applications.

Dual component LLDPE copolymers with improved impact and tear resistance

Disclosed herein are ethylene-based polymers generally characterized by a melt index of less than 15 g/10 min, a density from 0.91 to 0.945 g/cm, a CY-a parameter at 190&#xb0; C. from 0.2 to 0.6, an average number of long chain branches per 1,000,000 total carbon atoms of the polymer in a molecular weight range of 500,000 to 2,000,000 g/mol of less than 5, and a maximum ratio of &#x3b7;/3&#x3b7; at an extensional rate of 0.03 secin a range from 3 to 15. The ethylene polymers have substantially no long chain branching in the high molecular weight fraction of the polymer, but instead have significant long chain branching in the lower molecular weight fraction, such that polymer melt strength and bubble stability are maintained for the fabrication of blown films and other articles of manufacture. These ethylene polymers can be produced using a dual catalyst system containing a single atom bridged metallocene compound with an indenyl group and a cyclopentadienyl group, and an unbridged hafnium metallocene compound with two cyclopentadienyl groups.

Ethylene-based polymers are characterized by a melt index less than 1 g/10 min, a density from 0.94 to 0.965 g/cm, a Mw from 100,000 to 250,000 g/mol, a relaxation time from 0.5 to 3 sec, and an average number of long chain branches (LCBs) per 1,000,000 total carbon atoms in a molecular weight range of 300,000 to 900,000 g/mol that is greater than that in a molecular weight range of 1,000,000 to 2,000,000 g/mol, or an average number of LCBs per 1,000,000 total carbon atoms in a molecular weight range of 1,000,000 to 2,000,000 g/mol of less than or equal to about 5 and a maximum ratio of &#x3b7;/3&#x3b7; at an extensional rate of 0.1 secfrom 1.2 to 10. These polymers have substantially no long chain branching in the high molecular weight fraction of the polymer, but instead have significant long chain branching in a lower molecular weight fraction, such that polymer melt strength and parison stability are maintained for the fabrication of blow molded products and other articles of manufacture. These ethylene polymers can be produced using a dual catalyst system containing a single or two atom bridged metallocene compound with two indenyl groups, and a single atom bridged metallocene compound with a fluorenyl group and a cyclopentadienyl group.

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Bartlesville, OK, United States of America

Ashish M Sukhadia