Nova Chemicals (International) S.a.

James Arthur Auger

Qinyan Wang

Patrick Lam

Benjamin Milton Shaw

Peter Andrew Sipos

Craig Allan Hulet

Lawrence Thomas Kale

Ross Donald Moreton

Gail Baxter

Patrick R Thomas

James Chin-Kuang Huang

Amanda Dolores Murphy

In the high pressure polymerization of ethylene homopolymers or copolymers, conditions in the high pressure recycle system may lead to the build-up of low molecular weight oligomers and waxes. Sequentially draining knock-out pots, located downstream of a high pressure separator, at regular intervals can reduce the build-up of low molecular weight oligomers and waxes during the high pressure polymerization of alpha olefins.

Mitigation of wax levels in the high pressure low density polyethylene process

An ethylene styrene copolymer having isolated styrene monomer units separated by 5 or 6 methylene groups as determined by C-NMR may be polymerized in the presence of an activator and a transition metal catalyst containing a phosphinimine ligand.

Ethylene styrene copolymer with isolated styrene

Shrink films having an outstanding balance of physical properties and shrink properties are manufactured from &ldquo;pseudohomogeneous&rdquo; linear low density polyethylene resin. The preferred pseudohomogeneous resins used in the present invention are prepared with an advanced Ziegler Natta catalyst (having a magnesium component and a titanium component), preferably in medium pressure solution polymerization process. The films of this invention may be employed in a variety of uses, including, 1) &ldquo;overwrap&rdquo; packaging to protect goods during transportation, distribution, handling and display; and 2) food packaging, such as shrink wrap for frozen poultry, primal meat cuts and processed meat and cheese products.

Shrink films

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Calgary, Canada

James Arthur Auger