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Method of making a polyether using a double metal cyanide complex compound

  • US 3,278,458 A
  • Filed: 02/14/1963
  • Issued: 10/11/1966
  • Est. Priority Date: 02/14/1963
  • Status: Expired due to Term
First Claim
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1. THE METHOD FOR MAKING A POLYETHER WHICH COMPRISES MIXING AT LEAST ONE POLYMERIZABLE ORGANIC CYCLIC OXIDE MONOMER HAVING A RING OF FROM 2 TO 3 CARBON ATOMS ANND ONE OXYGEN ATOM WITH A PARTICULATE CATALYST AND POLYMERIZING SAID MONOMER THROUGH ITS CYCLIC OXIDE GROUP TO FORM A POLYETHER IN ADMIXTURE WITH SAID CATALYST, SAID CATALYST BEING USED IN A MINOR AMOUNT BY WEIGHT SUFFICIENT TO POLYMERIZE SAID MONOMER TO FORM SAID POLYMER AND COMPRISING A DOUBLE METAL CYANIDE COMPLEX COMPOUND WHEREIN ONE OF THE METALS OF SAID COMPLEX COMPOUND IS SELECTED FROM THE GROUP CONSISTING OF ZN(II), FE(II), FE(III), CO(II), NI(II), MO(IV), MO(VI), AL(III), V(IV), V(V), SR(II), W(IV), W(VI), MN(II), AND CR(III) AND MIXTURES THEREOF, AND WHEREIN THE OTHER METAL OF SAID COMPLEX COMPOUND IS A METAL SELECTED FROM THE GROUP CONSISTING OF FE(II), FE(III), CO(II), CO(III), CR(II), CR(III), MN(II), MN(III), V(IV), AND V(V) AND MIXTURES THEREOF.

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