Patent ID: 6919293
Filing Date: 2005-07-19
Classification: B01J,C08G

Abstract:
1. A double metal cyanide catalyst comprising: a) at least one double metal cyanide compound; b) at least one organic complexing ligand; c) at least two complexing components chosen from polyether, polyester; polycarbonate; polyalkylene glycol sorbitan ester; polyalkylene glycol glycidyl ether; polyacrylamide; poly(acrylamide-co-acrylic acid); polyacrylic acid; poly(acrylic acid-co-maleic acid); polyacrylonitrile; polyalkyl acrylate; polyalkyl methacrylate; polyvinyl methyl ether; polyvinyl ethyl ether; polyvinyl acetate; polyvinyl alcohol; poly-N-vinylpyrrolidone; poly(N-vinylpyrrolidone-co-acrylic acid); polyvinyl methyl ketone; poly(4-vinylphenol); poly(acrylic acid-co-styrene); oxazoline polymer; polyalkyleneimine; maleic acid and maleic anhydride copolymers; hydroxyethylcellulose; polyacetal; glycidyl ether; glycoside; carboxylic acid esters of polyhydric alcohol; bile acid or its salt, ester or amide thereof; cyclodextrins; phosphorus compounds; α,β-unsaturated carboxylic acid esters; or ionic surface- or interface-active compounds, wherein complexing components c) are not the same as organic complexing ligand b).