Fina Technology, Inc.

Tina Technology, Inc.

Kayo Vizzini

Steven Daniel Gray

David W Knoeppel

Henry Enriquez

Tim J Coffy

Vincent Henri Barre

Lei Zhang

David J Rauscher

Processes of forming catalyst systems, catalyst systems and polymers formed therefrom are described herein. The processes generally include providing a first compound including a magnesium dialkoxide, contacting the first compound with a second compound to form a solution of reaction product 'A', wherein the second compound is generally represented by the formula:Ti(OR);wherein Ris selected from Cto Clinear to branched alkyls, contacting the solution of reaction product 'A' with a first metal halide to form a solid reaction product &#x201c;B&#x201d;, contacting solid reaction product &#x201c;B&#x201d; with a second metal halide, to form reaction product &#x201c;C&#x201d; and contacting reaction product &#x201c;C&#x201d; with reducing agent to form a catalyst component.

Ziegler-Natta catalyst systems and polymers formed therefrom

Processes of forming catalyst systems, catalyst systems and polymers formed therefrom are described herein. The processes generally include providing a first compound including a magnesium dialkoxide, contacting the first compound with a second compound to form a solution of reaction product 'A', wherein the second compound is generally represented by the formula:Ti(OR);wherein Ris selected from Cto Clinear to branched alkyls, contacting the solution of reaction product 'A' with a first metal halide to form a solid reaction product &#x201c;B&#x201d;, contacting solid reaction product &#x201c;B&#x201d; with a second metal halide to form reaction product &#x201c;C&#x201d; and contacting reaction product &#x201c;C&#x201d; with reducing agent to form a catalyst component.

Ziegler-natta catalyst systems and polymers formed therefrom

Disclosed is a process for making a Ziegler-Natta catalyst having controlled particle size and distribution. It comprises altering the precipitation of a catalyst component from a catalyst synthesis solution including a soluble magnesium containing catalyst precursor by controlling the concentration of either the soluble magnesium containing catalyst precursor, wherein the average particle size of the catalyst component is increased, and the particle size distribution increased, with a decreased concentration of the soluble magnesium containing catalyst precursor; or of the precipitating agent, wherein the average particle size of the catalyst component is increased, and the particle size distribution increased with an increased concentration of the precipitating agent. Use of the invention enables improved catalyst consistency regardless of production scale and customizing of catalyst morphology to desired polymer morphology. The novel catalyst components may be used to prepare polymers, and end-use articles therefrom, having desirable properties.

Process for controlling morphology of Ziegler-Natta catalysts

The present invention relates generally to catalysts, to methods of making catalysts, to methods of using catalysts, to methods of polymerizing, and to polymers made with such catalysts. More particularly, the present invention relates to polyolefin catalysts and to Ziegler-Natta catalysts, to methods of making such catalysts, to methods of using such catalysts, to polyolefin polymerization, and to polyolefins.

Ziegler-Natta catalyst

A polyethylene may be prepared using a mixture of a silica supported catalyst and a magnesium chloride supported catalyst. By changing the ratio of the two catalysts, the polyethylene produced may have a varying bulk density and shear response. The method allows for the tuning or targeting of properties to fit a specific application, such as a blow molding or vapor barrier film.

Polyethylene materials prepared using mixed ziegler-natta catalyst systems

Polyethylene materials prepared using mixed ziegler-natta catalysts systems

Catalyst components, methods of forming catalyst compositions, polymerization processes utilizing the catalyst compositions and polymers formed thereby are described herein. The methods generally include providing a magnesium dialkoxide compound, contacting the magnesium dialkoxide compound with a first agent to form a solution of a reaction product 'A', contacting the solution of reaction product 'A' with a reducing agent to form a reduced reaction product &#x201c;A&#x201d;, contacting reduced reaction product &#x201c;A&#x201d; with a second agent to form a solid reaction product &#x201c;A&#x201d;, contacting solid reaction product &#x201c;A&#x201d; with a metal halide to form reaction product &#x201c;B&#x201d; and contacting reaction product &#x201c;B&#x201d; with an organoaluminum compound to form a catalyst component.

Ziegler-Natta catalyst for particle size control

Methods of forming polyolefins and catalysts are described herein. Such methods generally include forming Ziegler-Natta catalyst compounds in the absence of one or more blended compounds typically used to form such catalyst.

Growing community of inventors

Pasadena, TX, United States of America

Kayo Vizzini