Mobil Oil Corporation

Irena B Petsche

Robert O Hagerty

Kenneth George Schurzky

Alpha-olefin polymerization catalysts are prepared by heating a solid porous carrier having reactive OH groups in the atmosphere of an oxygen-containing gas. The resulting catalysts exhibit higher productivity and produce ethylene polymers or ethylene/C.sub.3 -C.sub.10 copolymers having higher bulk density than similar catalysts prepared with the carriers heated in an atmosphere of nitrogen.

Process for preparing alpha-olefin polymers

Alpha-olefin polymerization catalysts are prepared by heating a solid porous carrier having reactive OH groups in the atmosphere of an oxygen-containing gas. The resulting catalysts exhibit higher productivity and produce ethylene polymers of ethylene/C.sub.3 -C.sub.10 copolymers having higher bulk density than similar catalysts prepared with the carriers heated in an atmosphere of nitrogen.

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Cranbury, NJ, United States of America

Irena B Petsche