Nova Chemicals (international) S.a.

Nova Chemicals Inc.

Amy Baltimore

Qinyan Wang

Isam Jaber

Mohamed Aiffa

Steven Clemens

Holly Ann Severin

Helena Ouskine

Perry Dewit

Lawrence Martin Josef Van Asseldonk

Charles Ashton Garret Carter

Darryl Morrison

Savini Udara Suduweli Kondage

Mark Kelly

Bradley Wade Funk

Tyler Craig

Lawrence Van Asseldonk

Jessamyn Ross Logan

Lawrence Martin Van Asseldonk

Holly Severin

Savini Kondage

Jessamyn Logan

The various embodiments of the invention provide, a magnesium titanium polymerization procatalyst, methods for making and using the same.

Ziegler-Natta catalyst for high temperature polymerization

In some embodiments provided herein is a self-supported phosphinimine single site catalyst having a molar ratio of Al from the activator (MAO) to the active metal in the catalyst from 5:1 to 30:1. The catalyst is prepared by precipitating an emulsion of the activated catalyst from a perfluoroalkane continuous phase resulting in spherical catalyst particles having a diameter typically from 5 to 200 &#x3bc;m.

Self supported phosphinimine catalyst

Some embodiments herein disclose a process for producing an ethylene polymer or copolymer which contains less than 5 ppm titanium and has a bulk density, in granular form, of at least 22.5 lbs/ft, using a spheroidal Ziegler-Natta type olefin polymerization catalyst having a particle size distribution characterized by a Dm*/Dn of less than 3.0 and comprising a titanium compound, an aluminum compound, and a spheroidal magnesium chloride support.

Process for polymerization using dense and spherical ziegler-natta type catalyst

A phosphinimine catalyst immobilized on a passivated inorganic oxide support, had high activity at low co-catalyst concentrations and gave, under gas phase polymerization conditions, ethylene copolymer with a high molecular weight. A method of making a passivated silica support involves treatment of silica with an organoaluminum compound, a diorganomagnesium compound and a source of chloride (to make MgCl) under anhydrous conditions and in the absence of polar solvents.

Passivated supports for use with olefin polymerization catalysts

Growing community of inventors

Calgary, Canada

Amy Baltimore