PRODUCTION OF TRANSITION METAL CARBOXYLATES Russian patent published in 2017 - IPC C07C2/32 C07C51/02 C07C53/126 C08K5/98 C07F11/00 C07F13/00 B01J31/04 B01J37/08 

FIELD: chemistry.

SUBSTANCE: method is proposed for producing transition metal carboxylate compounds by combining a transition metal precursor compound and a group 1 or a group 2 metal carboxylate in a polar aprotic first solvent in essentially acid-free and substantially anhydrous conditions to form a mixture comprising a transition metal carboxylate composition. The invention also relates to a transition metal carboxylate composition for use as a component of a catalyst system for the oligomerization of olefins produced by a process that comprises contacting in substantially anhydrous and substantially acid-free conditions: 1) a transition metal precursor compound having the formula (M^B) _y1X_x1L_t, where M^B is Cr of oxidation state +x, where x is an integer from+1 to +6, each X is independently an anionic ligand with charge y, and each X is independently halide, nitrate, sulfate or phosphate; each L independently represents C₂-C₄₀ ether, C₂-C₄₀thioether, C₂-C₂₀ nitrile, C₁-C₆₀ amine or C₃-C₆₀phosphine; ℓ is an integer from 0 to 7; and x*y1=|y*x1|; 2) C₃-C₂₅ carboxylate of the group 1 or the group 2 metal, and 3) the first solvent comprising C₂-C₄₀ ether, C₂-C₄₀ thioether, C₂-C₂₀ nitrile, C₁-C₆₀ amine, C₃-C₆₀ phosphine, or any combination of these compounds, to obtain the transition metal carboxylate. If desired, the transition metal carboxylate composition can be purified, for example, by substantially complete removing the first solvent to produce a residue containing the transition metal carboxylate composition, and also optionally by further extracting the transition metal carboxylate composition from the residue using a noncoordinating second solvent to produce an extract containing a transition metal carboxylate composition.

EFFECT: improving the productivity and selectivity of catalytic systems and reducing their cost.

35 cl, 21 dwg, 8 tbl, 7 ex