| abstract |
The invention relates to new double metal cyanide (DMC) catalysts for the productionnof polyether polyols by polyaddition of alkylene oxides to active onesnStarter compounds containing hydrogen atoms, the catalyst a)nDouble metal cyanide compounds, b) organic complex ligands and two ornseveral complex-forming components from the compound classes c) of the polyethernand d) the polyester, polycarbonates, polyalkylene glycol sorbitan esters, polyalkylene glycol glycidyl ether,nGlycidyl ethers, glycosides, carboxylic acid esters more polyvalentnAlcohols, cyclodextrins, phosphorus compounds, α, β-unsaturated carboxylic estersnor contains ionic surface or surface-active compounds.nThe catalysts of the invention have in polyether polyol productionna greatly increased activity. |