Olefin polymerization catalyst
AssigneeNational Petro Chemicals Corporation
InventorsLouis J. Rekers, Stanley J. Katzen, Jerome H. Krekeler
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Abstract
Olefin polymerization catalysts are prepared by depositing a chromium compound and an aluminum compound on an inorganic support material and heating the support material in a non-reducing atmosphere at a temperature above about 300.degree. C up to the decomposition temperature of the support material. The supported chromium and aluminum compound is then combined with a metallic and/or non-metallic reducing agent, to provide a catalyst system useful in the polymerization of 1-olefins.
Claims3
A process for the polymerization of olefins which comprises contacting said olefins with the catalyst system comprising:
- a. a solid inorganic support material having surface hydroxyl groups,
- b. a chromium containing compound deposited on said support, said chromium containing compound being capable of reacting with said surface hydroxyl groups, and
- c. an aluminum compound deposited on said support, said aluminum compound being capable of reacting with said surface hydroxyl groups,
- said supported chromium containing compound and aluminum compound having been heated in a non-reducing atmosphere at a temperature above 300.degree. C. up to the decomposition temperature of the support material and combined with a metallic or non-metallic reducing agent.
Dependencies are inferred from the claim text.