abstract |
Polyols are produced by oxyalkylation of a polyhydric alcohol selected from glycerol, pentaerythritol, sucrose, sorbitol, a glucoside or 1, 2, 6 - hexane triol with an alkylene oxide (e.g. oxide ethylene or propylene oxide) in a heterocyclic solvent containing nitrogen (eg NMP) in the presence of a basic catalyst (eg KOH). |