Abstract: A process can be used for preparing polyether-modified polybutadienes. The process involves reacting at least one polybutadiene (A) with at least one epoxidizing reagent (B) to give at least one epoxy-functional polybutadiene (C). The at least one epoxy-functional polybutadiene (C) is then reacted with at least one hydroxy-functional compound (D) to give at least one hydroxy-functional polybutadiene (E). The at least one hydroxy-functional polybutadiene (E) is finally reacted with at least one epoxy-functional compound (F) to give at least one polyether-modified polybutadiene (G).

Abstract: The present invention provides specific alkoxylation products, a process for preparing them, compositions comprising these alkoxylation products, and their use. In particular the present invention provides an alkoxylation product comprising at least one non-terminal alkoxysilyl group, formed from monomers of at least one alkylene oxide and at least one epoxide bearing alkoxysilyl groups, wherein at least 30% of all the free OH groups on the chain end of the alkoxylation product have been converted to acetoacetate groups.