DOUBLE METAL CYANIDE CATALYSTS FOR PRODUCTION OF POLYETHERPOLYOLS Russian patent published in 2004 - IPC

FIELD: organic synthesis catalysts.

SUBSTANCE: invention relates to novel double metal cyanide catalysts and to a method for production of polyetherpolyols by polyaddition of alkylene oxides to substrates with active hydrogen atoms. Catalyst contains (a) double metal cyanide compounds of general formula (III): M_x[M'_x'(CN)_y]_z (III), where M is selected from ions: 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), and Cr(III); M' is selected from ions: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), and V(V); x, x', y, and z are integers selected such that double metal cyanide compounds were electrically neutral; (b) bile acids or their salts, esters, or amides; and (c) organic complex ligands. Catalyst preparation procedure includes following stages: (i) interaction, in aqueous solution, of (α) metal salts with metal cyanide salts, (β) organic complex ligands other than bile acids or their salts, esters, or amides, and (γ) bile acids or their salts, esters, or amides; and (ii) isolation, washing, and drying of catalyst obtained in stage (i).

EFFECT: increased catalytic activity.

9 cl, 4 ex