Univation Technologies, LLC

Dow Global Technolgoies LLC

C Dale Lester

Wesley R Mariott

Phuong Anh Cao

Nitin Borse

Mark Gregory Goode

Kevin Joseph Cann

John H Moorhouse

Bruce Jon Savatsky

Richard B Pannell

Daniel Paul Zilker, Jr

F David Hussein

Michael D Awe

Abarajith S Hari

Roger L Kuhlman

John Francis Szul

Pradeep Jain

Swapnil B Chandak

Ian M Munro

Daniel P Zilker

Chuan C He

Jesse C Beilhart

A spray-dried zirconocene catalyst system comprising a zirconocene catalyst and a hydrophobic fumed silica, which supports the zirconocene catalyst. A spray-drying method of making same. Polyolefins; methods of making and using same; and articles containing same.

Spray-dried zirconocene catalyst system

An activated, titanium-based, spray-dried Ziegler-Natta catalyst system containing a titanium-based Ziegler-Natta catalyst, a carrier material, and an activator mixture comprising an effective amount of an activator mixture comprising triethylaluminum and diethylaluminum chloride for producing a substantially uniform comonomer composition distribution. Also, polyolefins; methods of making and using same; and articles containing same.

Activated spray-dried Ziegler-Natta catalyst system

A modified spray-dried Ziegler-Natta (pro)catalyst system comprising a Ziegler-Natta (pro)catalyst, a carrier material, and a tetrahydrofuran/ethanol modifier; polyolefins; methods of making and using same; and articles containing same.

Modified spray-dried Ziegler-Natta (pro)catalyst systems

Methods of making spray-dried Ziegler-Natta (pro)catalyst systems containing titanium Ziegler-Natta (pro)catalysts, a hydrophobic silica carrier material, and tetrahydrofuran. The spray-dried Ziegler-Natta (pro)catalyst systems made by the method. Methods of polymerizing olefin (co)monomer(s) with the spray-dried Ziegler-Natta catalyst system to make polyolefin polymers, and the polyolefin polymers made thereby.

Spray-dried Ziegler-Natta (pro)catalyst systems

Catalyst systems and methods for making and using the same are provided. The catalyst systems can include a plurality of silica particles and a metallocene catalyst and an activator supported on the plurality of silica particles. The polymerization catalysts have a particle size distribution in which about 10% of the particles have a size less than about 17 to about 23 micrometers, about 50% of the particles have a size less than about 40 to about 45 micrometers, and about 90% of the particles have a size less than about 72 to about 77 micrometers.

Preparation of polyolefin

Growing community of inventors

South Charleston, WV, United States of America

C Dale Lester