Patent ID: 6953765

Claim:
A double-metal cyanide catalyst comprising: a) at least one double-metal cyanide compound; b) at least one organic complex ligand which is not a polyether, a polyester, a polycarbonate, a polyalkylene glycol sorbitan ester, a polyalkylene glycol glycidyl ether, a polyacrylamide, a poly(acrylamide-co-acrylic acid), a polyacrylic acid, a poly(acrylic acid-co-maleic acid), a polyacrylonitrile, a polyalkyl acrylate, a polyalkyl methacrylate, a polyvinyl methyl ether, a polyvinyl ethyl ether, a polyvinyl acetate, a polyvinyl alcohol, a poly-N-vinylpyrrolidone, a poly(N-vinylpyrrolidone-co-acrylic acid), a polyvinyl methyl ketone, a poly(4-vinylphenol), a poly(acrylic acid-co-styrene), an oxazoline polymer, a polyalkyleneimine, a maleic acid copolymer, a maleic anhydride copolymer, a hydroxyethylcellulose, a polyacetal, a glycidyl ether, a glycoside, a carboxylic acid ester of polyhydric alcohol, a bile acid or bile acid salt, a bile acid ester, a bile acid amide, a cyclodextrin, a phosphorus compound, an α,β-unsaturated carboxylic acid ester, or an ionic surface or interface-active compound; and c) two different complexing components, each complexing component independently comprising a polyether, a polyester, a polycarbonate, a polyalkylene glycol sorbitan ester, a polyalkylene glycol glycidyl ether, a polyacrylamide, a poly(acrylamide-co-acrylic acid), a polyacrylic acid, a poly(acrylic acid-co-maleic acid), a polyacrylonitrile, a polyalkyl acrylate, a polyalkyl methacrylate, a polyvinyl methyl ether, a polyvinyl ethyl ether, a polyvinyl acetate, a polyvinyl alcohol, a poly-N-vinylpyrrolidone, a poly(N-vinylpyrrolidone-co-acrylic acid), a polyvinyl methyl ketone, a poly(4-vinylphenol), a poly(acrylic acid-co-styrene), an oxazoline polymer, a polyalkyleneimine, a maleic acid copolymer, a maleic anhydride copolymer, a hydroxyethylcellulose, a polyacetal, a glycidyl ether, a glycoside, a carboxylic acid ester of polyhydric alcohol, a bile acid or bile acid salt, a bile acid ester, a bile acid amide, a cyclodextrin, a phosphorus compound, an α,β-unsaturated carboxylic acid ester, or an ionic surface or interface-active compound.