HIGH-ACTIVITY DOUBLE METAL CYANIDE CATALYSTS Russian patent published in 2002 - IPC

Abstract RU 2177828 C2

FIELD: polymerization catalysts. SUBSTANCE: invention discloses catalysts containing double metal cyanide complex, organic complexing agent and 5 to 80% (based on the total weight of catalyst) polyether with average number molecular weight below 500. If metal is cobalt, catalyst polymerizes propylene oxide at 105 C with rate higher than 1 kg propylene oxide per 1 g cobalt and per 1 min. Resulting polyether-polyols are characterized by exceptionally low degrees of unsaturation. EFFECT: simplified catalyst preparation procedure. 14 cl, 1 dwg, 2 tbl, 10 ex

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RU 2 177 828 C2

Authors

Le-Kkhak Bi

Dates

2002-01-10—Published

1997-04-11—Filed