Nova Chemicals (international) S.a.

Nova Chemicals Inc.

Patrick Lam

Victoria Ker

Peter Phung Minh Hoang

Charles Ashton Garret Carter

Yan Jiang

Cliff Baar

Qinyan Wang

Darryl Morrison

Sarah Marshall

P Scott Chisholm

Tony Tikuisis

Norman Dorien Joseph Aubee

Douglas Checknita

Denny Paul Sauvageau

Tingting Yu Chuang

Benjamin Milton Shaw

Garry Takashi Yamashita

Darryl J Morrison

Ian Douglas Mckay

Dusan Jeremic

XiaoChuan Wang

Fazle Sibtain

Kenneth Edward Taylor

Hamidreza Khakdaman

Christopher John Brooke Dobbin

Tieqi Li

Mark Kelly

Karen Grabow

Robert Quaiattini

Cliff Robert Barr

Peter Phung Hoang

Cliff Robert Baar

Charles Ashton Carter

Shivendra K Goyal

Norman Aubee

Bronwyn Gillon

Ian Douglas McKay

Zengrong Zhang

Lee Douglas Henderson

Owen Lightbody

John William Swabey

Alexei Kazakov

James Arthur Auger

Maryam Fereydoon

Gail Baxter

Lianyou Fan

Martina Elissa Djatmiko

Tingting Chuang

A Biaxially Oriented Polyethylene (BOPE) process uses a selected polyethylene having a medium density and a very broad molecular weight distribution. The use of this selected polyethylene facilitates stretching in the BOPE process in comparison to previously used polyethylene resins having a higher density and/or a narrower molecular weight distribution.

Biaxially oriented MDPE film

The disclosure provides an ethylene copolymer having a density of from 0.912 g/cmto 0.925 g/cm, a melt flow ratio (I/I) of from 20 to 30, and a normal comonomer distribution profile in a GPC-FTIR analysis, wherein the normal comonomer distribution profile has a slope of from &#x2212;3.5 to &#x2212;7.5, where the slope is defined as the number of short chain branches per 1000 carbons at a molecular weight of 300,000 minus the number of short chain branches per 1000 carbons at a molecular weight of 30,000. The ethylene copolymers have improved bulk density and when made into film, provide good physical properties.

Ethylene copolymer having enhanced film properties

Ethylene/1-butene copolymers made with a single site catalyst system have high melt strength and good processability.

Ethylene/1-butene copolymers with enhanced resin processability

Ethylene copolymers made in the gas phase using a phosphinimine based single site catalyst supported on a passivated inorganic oxide support. The ethylene copolymers have a relatively narrow molecular weight distribution and good rheological parameters.

Passivated supports: catalyst, process, product and film

Barrier films are prepared from a blend of two high density polyethylene blend components and a high performance organic nucleating agent. The two high density polyethylene blend components have substantially different melt indices. Large reductions in the moisture vapor transmission rate of the film are observed in the presence of the nucleating agent when the melt indices of the two blend components have a ratio of greater than 10/1. The resulting barrier films are suitable for the preparation of packaging for dry foods such as crackers and breakfast cereals.

Barrier film for food packaging

This disclosure relates to manufactured articles containing ethylene interpolymers. Specifically, films, containers and lids comprising at least one layer of an ethylene interpolymer product, or a blend containing an ethylene interpolymer product, where the ethylene interpolymer product has: a Dilution Index (Y) greater than 0; total catalytic metal &#x2265;3.0 ppm; &#x2265;0.03 terminal vinyl unsaturations per 100 carbon atoms, and; optionally a Dimensionless Modulus (X) greater than 0. The ethylene interpolymer products have a melt index from about 0.4 to about 100 dg/minute, a density from about 0.950 to about 0.970 g/cm, a polydispersity (M/M) from about 2 to about 25 and a CDBIfrom about 55% to about 97%. Further, the ethylene interpolymer products are a blend of at least two ethylene interpolymers; where one ethylene interpolymer is produced with a single-site catalyst formulation and at least one ethylene interpolymer is produced with a heterogeneous catalyst formulation.

HDPE articles

This disclosure relates to manufactured articles containing ethylene interpolymers. Specifically, films, containers and lids comprising at least one layer of an ethylene interpolymer product, or a blend containing an ethylene interpolymer product, where the ethylene interpolymer product has: a Dilution Index (Y) greater than 0; total catalytic metal &#x2267;3.0 ppm; &#x2267;0.03 terminal vinyl unsaturations per 100 carbon atoms, and; optionally a Dimensionless Modulus (X) greater than 0. The ethylene interpolymer products have a melt index from about 0.4 to about 100 dg/minute, a density from about 0.950 to about 0.970 g/cm, a polydispersity (M/M) from about 2 to about 25 and a CDBIfrom about 55% to about 97%. Further, the ethylene interpolymer products are a blend of at least two ethylene interpolymers; where one ethylene interpolymer is produced with a single-site catalyst formulation and at least one ethylene interpolymer is produced with a heterogeneous catalyst formulation.

A polymer blend comprising first and second polyethylene copolymers is presented which has good processability, and which when made into film shows good toughness-stiffness balance, reasonable MD tear, as well as good optical properties.

Polyethylene blend compositions and film

Ethylene copolymers having a relatively high melt flow ratio and a multimodal profile in a temperature rising elution fractionation (TREF) plot are disclosed. The copolymers can be made into film having good dart impact values and good stiffness properties under decreased extruder pressures.

Ethylene copolymer compositions, film and polymerization processes

Ethylene copolymers, film and polymerization process

Growing community of inventors

Calgary, Canada

Patrick Lam