Nova Chemicals (international) S.a.

Other

Nova Chemicals Inc.

Zanzotto, Ludo

Zanzotto, Henrieta

Ho, Kam Wah

Kam Wah Ho

Tony Tikuisis

Nitin Borse

Norman Dorien Joseph Aubee

Ludo Zanzotto

Adrian Cassola

Norman Dorien Aubee

Henrieta Zanzotto

Polyethylene is often stabilized with the combination of a primary antioxidant (such as a hindered phenol, a hydroxylamine or a lactone) and a secondary antioxidant (such as a phosphonite, a monophosphite, or a diphosphite). The diphosphite additives are not completely compatible with 'linear' polyethylene. This results in 'blooming' of the diphosphite to the surface of the finished polyethylene part or polyethylene film. The use of a preblend of ethylene vinyl alcohol (EVOH) and diphosphite mitigates this problem.

Stabilized polyethylene

&ldquo;Cast&rdquo; films having excellent puncture resistance and tear strength 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 are especially suitable for &ldquo;pallet wrapping&rdquo; and for wrapping goods of unusual or uneven shapes and sizes.

Cast films

Polyesters having a reduced gel content may be made from dicyclopentadiene having a purity of less than about 90% by incorporating from 30 to 200 ppm of an aromatic inhibitor into the dicyclopentadiene prior to reacting the glycol and carboxylic acid to form the polyester.

Polyesters from dilute dicyclopentadiene

This invention relates to thermosettable bismaleimide resin compositions, and to cured bismaleimide thermoset resins. The compositions of the present invention contain an additive which is the reaction product of (i) an epoxide, and (ii) a second reactant selected from an aromatic polyhydroxyl, an aromatic amide or an aromatic amine. The thermoset resins having surprising strength and modulus properties, and are suitable for use in the preparation of composite materials.

Bismaleimide compositions with epoxide-aromatic amine fortifiers

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Calgary, Canada

Kam Wah Ho