METHOD FOR SYNTHESISING A RARE EARTH ORGANOPHOSPHATE AND USE THEREOF TO PREPARE A "PREFORMED" CATALY

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The invention relates to a method for preparing a rare earth organophosphate in the form of a solution with a very low viscosity or a fluid which can be used as is for the preparation of a "preformed" catalytic system in particular for the stereospecific 1, 4-cis polymerisation of conjugated dienes.