Method for preparing polyether polyols
AssigneeBASF SE
InventorsGeorg Heinrich Grosch, Harald Larbig, Reinhard Lorenz, Dieter Junge, Kathrin Harre
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Abstract
The present invention relates to a process for the preparation of polyether polyols by catalytic reaction of H-functional initiators with lower alkylene oxides, wherein the catalysts used are multimetal cyanide compounds and the H-functional initiators used are butane-1,4-diol, α-hydroxy-ω-hydroxypoly(oxybutane-1,4-diyl), pentane-1,5-diol, decane-1,10-diol or mixtures of at least two of these compounds.
Claims6
A process for the preparation of a polyether polyol comprising catalytic reaction of an H-functional initiator with a lower alkylene oxide in the presence of a catalyst, wherein the catalyst comprises a multimetal cyanide compound and the H-functional initiator comprises a mixture of butane-1,4diol and another H-functional initiator, a mixture of α-hydroxy-ω-hydroxypoly(oxybutane-1,4-diyl) and another H-functional initiator, a mixture of pentane-1,5-diol and another H-functional initiator, a mixture of decane-1,10-diol and another H-functional initiator, a mixture of butane1,4-diol, of α-hydroxy-ω-hydroxypoly(oxybutane-1,4-diyl), pentane-1,5-diol, and/or decane-1,10-diol and another H-functional initiator, wherein said another H-functional initiator is glycerol and/or trimethylol propane.
Dependencies are inferred from the claim text.