Economic recovery method of the starting material to be used and how to reduce the concentration of inorganic by-products and organometallic by-products in the preparation of metallocene

摘要

An organic transition metal compound of one kind of inorganic by-products and organometallic by-products from a mixture containing the inorganic by-products and at least one organometallic by-products of at least one as a by-product, at least as a product A method of separating, The following steps: Step was mixed with a mixture of water and organic polar extractant at least one, a mixture comprising A) product, and inorganic by-products and organometallic by-products, separating the undissolved residue, Step of washing with a mixture containing an organic polar aprotic solvent of one, and step C) and at least an organic non-polar extractant at least one organic or non-polar extractant, the residue from step B) A) washed with B), comprising the step of drying the residue containing the organic transition metal compound and.