W. R. Grace Co.-conn.

W. R. Grace Co.

John Lawrence Warthen

Rimantas Glemza

Warren Stanley Briggs

Marvin Vernon Paggen

The present invention encompasses a monolithic multi-component composite polyolefin catalyst particle comprising at least two distinct supported catalyst components wherein each catalyst component is capable of producing a resin having a melt index different from at least one other catalyst component under constant reaction conditions. Methods of producing and using the multi-component catalyst are disclosed.

Multi-component polyolefin catalysts

A process for preparing extrudates of alumina monohydrate having densities, surface areas and pore volumes within a predetermined range by mixing the alumina with a sufficient quantity of water to prepare an extrudable product and aging this product for a period of 1/2 to 6 hours. The alumina is then extruded and the extrudates dried using conventional techniques. The alumina is primarily used as a base for auto exhaust conversion catalysts.

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Baltimore, MD, United States of America

John Lawrence Warthen