Method for the preparation of metal salts of phosphorus acid esters
AssigneeStandard Oil Company (Indiana)
InventorsGlen R. Hoff, Peter Fotis
Life of this patent
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Abstract
Method for preparing metal salts of phosphorus acid esters comprising reacting metal salts of organic acids with phosphorus acid esters. By-product removal is facilitated such that high purity products are produced. Products are particularly useful as support materials in the preparation of highly active alpha-olefin polymerization catalyst components.
Claims8
A process for the preparation of metal salts of phosphorus acid esters useful in the preparation of alpha-olefin polymerization catalyst components comprising reacting, under substantially anhydrous conditions, (1) at least one anhydrous divalent magnesium, calcium, manganese or iron salt of a monocarboxylic acid selected from the group consisting of aliphatic acids of 2 to about 20 carbon atoms, aromatic acids of 7 to about 12 carbon atoms, and aliphatically-substituted aromatic acids and aryl-substituted aliphatic acids of 8 to about 20 carbon atoms;
- and (2) at least one trialkyl orthophosphate having 1 to about 6 carbon atoms per alkyl radical in amounts such that a phosphorus acid ester salt having at least one phosphorus acid ester group bonded to metal through oxygen is formed, and at a temperature such that the divalent metal salt of a monocarboxylic acid and the trialkyl orthophosphate will react without substantial decomposition of the trialkyl orthophosphate.
Dependencies are inferred from the claim text.