Method for preparing a neodymium alkyl phosphate solution

Abstract

The present invention relates to a method for producing a neodymium (III) alkyl phosphate solution, said method comprising the steps of: (a) reacting neodymium (III) compound with an organophosphorous acid in a solvent in the presence of a promoter thereby obtaining a neodymium (III) alkyl phosphate solution; (b) adding an anti-gelling agent to the neodymium (III) alkyl phosphate solution obtained in step (a); and (c) removing water formed and/or added during step (a) from the obtained neodymium (III) alkyl phosphate solution, thereby obtaining a solution comprising neodymium (III) alkyl phosphate. The invention relates also to a neodymium (III) alkyl phosphate solution obtained by the above-described method as well as use of this solution as a catalyst precursor for diene polymerization.

Dependencies are inferred from the claim text.