The invention relates to an improved method of producing double metal cyanide (DMC) catalysts for the production of polyether polyols by polyaddition of alkylene oxides to starter compounds containing active hydrogen atoms. The process of claim 9, wherein the at least one organic complexing ligand is selected from the group consisting of polyethers, polyesters, polycarbonates, glycidyl ethers, glycosides, polyhydric alcohol carboxylates, polyalkylene glycol sorbitan esters bile acids or salts, esters or amides thereof, cyclodextrins, organic phosphates, phosphites, phosphonates, phosphonites, phosphinates or phosphinites, ionic surface- or interface-active compounds and α,β-unsaturated carboxylic acid esters. The process of claim 9, wherein the at least one organic complexing ligand is added after redispersion of the DMC catalyst.ġ4. The process of claim 9, wherein the organic complexing ligand comprises tert-butanol.ġ3. The process of claim 9, wherein the at least one organic complexing ligand is added during preparation of the DMC catalyst.ġ2. The process of claim 9 in which the DMC catalyst comprises zinc hexacyanocobaltate(III).ġ1. A process for preparing a double-metal cyanide (DMC) catalyst comprising the steps of: forming a DMC catalyst dispersion by combining, with a jet disperser, at least one solution of at least one water soluble salt of Zn(II), Fe(II), Ni(II), Mn(II), Co(II), Sn(II), Pb(II), Fe(III), Mo(IV), Mo(VI), Al(III), V(V), V(IV), Sr(II), W(IV), W(VI), Cu(II) or Cr(III) at least one solution of at least one water-soluble metal cyanide salt or at least one alkali or alkaline-earth metal cyanide acid of Fe(II), Fe(III), Co(II), Co(III), Cr(II), Cr(III), Mn(II), Mn(III), Ir(III), Ni(II), Rh(III), Ru(II), V(IV) or V(V) adding at least one organic complexing ligand isolating the DMC catalyst from the dispersion redispersing the DMC catalyst in a solution of aqueous or anhydrous ligand with a jet disperser, wherein the aqueous or anhydrous ligand may be the same as the at least one organic complexing ligand and isolating the DMC catalyst from the solution.ġ0. The process of claim 1, wherein the at least one organic complexing ligand is selected from the group consisting of polyethers, polyesters, polycarbonates, glycidyl ethers, glycosides, polyhydric alcohol carboxylates, polyalkylene glycol sorbitan esters bile acids or salts, esters or amides thereof, cyclodextrins, organic phosphates, phosphites, phosphonates, phosphonites, phosphinates or phosphinites, ionic surface- or interface-active compounds and α,β-unsaturated carboxylic acid esters.ĩ. The process of claim 2, wherein the at least one organic complexing ligand is added after redispersion of the DMC catalyst.Ĩ. The process of claim 1, wherein the organic complexing ligand comprises tert-butanol.ħ.

The process of claim 1, wherein the at least one organic complexing ligand is added during preparation of the DMC catalyst.Ħ. The process of claim 1 in which the DMC catalyst comprises zinc hexacyanocobaltate(III).ĥ. The process of claim 2, further comprising the step of: isolating the DMC catalyst from the solution.Ĥ. The process of claim 1 further comprising the steps of: isolating the DMC catalyst from the dispersion and redispersing the DMC catalyst in a solution of aqueous or anhydrous ligand with a jet disperser, wherein the aqueous or anhydrous ligand may be the same as the at least one organic complexing ligand.ģ. A process for preparing a double-metal cyanide (DMC) catalyst comprising the steps of: forming a DMC catalyst dispersion by combining, with a jet disperser, at least one solution of at least one water soluble salt of Zn(II), Fe(II), Ni(II), Mn(II), Co(II), Sn(II), Pb(II), Fe(III), Mo(IV), Mo(VI), Al(III), V(V), V(IV), Sr(II), W(IV), W(VI), Cu(II) or Cr(III) at least one solution of at least one water-soluble metal cyanide salt or at least one alkali or alkaline-earth metal cyanide acid of Fe(II), Fe(III), Co(II), Co(III), Cr(II), Cr(III), Mn(II), Mn(III), Ir(III), Ni(II), Rh(III), Ru(II), V(IV) or V(V) and adding at least one organic complexing ligand.Ģ. Production of polyether diols using water as a telogenġ. Polyethers and method for making the same Process for the enhanced separation of impurities from coal and coal products produced therefrom Process for preparing metal cyanide complex catalyst Polyether-containing double metal cyanide catalysts Highly active double metal cyanide catalystsĬyanide complex catalyst manufacturing processĭouble metal cyanide catalysts containing functionalized polymers Crystalline double metal cyanide catalysts for producing polyether polyols

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