Double metal cyanide catalysts for producing polyether polyols

摘要

Double metal cyanide catalysts containing, in addition to (a) double metal cyanides and (b) organic ligands, (c) 2 or more complex-formers other than (b) comprising functionalized polymers such as polyethers or polyacrylamide (26 types listed) or compounds such as glycidyl ethers, cyclodextrins, gallic acid or phosphorus compounds (11 types listed). Double metal cyanide (DMC) catalyst containing (a) DMC compound(s), (b) organic complex ligand(s) other than (c), (c) two or more complex-forming components (other than b) comprising functionalized polymers selected from polyethers, polyesters, polycarbonates, polyalkylene glycol sorbitan esters, polyalkylene glycol glycidyl ethers, polyacrylamide, acrylamide-acrylic acid copolymers, polyacrylic acid, acrylic acid-maleic acid copolymers, polyacrylonitrile, poly(meth)acrylates, poly-vinyl methyl ether, poly-vinyl ethyl ether, polyvnyl acetate, polyvinyl alcohol, poly-(N-vinylpyrrolidone), N-vinylpyrrolidone-acrylic acid copolymers, poly-vinyl methyl ketone, poly-(4-vinylphenol), acrylic acid-styrene copolymers, oxazoline polymers, polyalkylene-imines, maleic acid or anhydride copolymers, hydroxyethylcellulose and polyacetals, or glycidyl ethers, glycosides, carboxylate esters of polyhydric alcohols, gallic acids and their salts, esters or amides, cyclodextrins, phosphorus compounds, alpha,beta-unsaturated carboxylate esters and ionic surface-active or interfacially active compounds. Independent claims are also included for: (i) production of DMC catalysts by (1) reacting (A) metal salts and metal cyanide salts in aqueous solution with (B) complex ligands selected from functionalized polymers, glycidyl ethers, glycosides, carboxylate esters of polyhydric alcohols, gallic acids or their salts, esters or amides, cyclodextrins, phosphorus compounds, alpha,beta-unsaturated carboxylic acid esters or ionic surface- or interfacially-active compounds and (C) 2 or more complex-formers (c) as above and then (2) isolating, washing and drying the catalyst; (ii) production of polyether-polyols by reaction of alkylene oxides with H-functional starter compounds in presence of DMC catalysts as above; and (iii) polyether-polyols obtained by this process.