| 摘要 |
<p>The invention provides processes for preparation of polyether alcohols d) by reaction of a) at least one compound having at least three hydrogen atoms reactive with alkylene oxides and having a molecular weight Mn of not more than 600 g/mol with b) alkylene oxides using c) catalysts, characterised in that the reaction is carried out in the presence of a polyether alcohol d) with a hydroxyl number of 100-800 mg KOH/g and a functionality of 1.5 to 8.</p> |
