Alkoxysilane-terminated prepolymer based on polyether carbonate polyols for spray foams

Alkoxysilane terminated prepolymer obtained by reacting at least (a) a polyol, (b) a compound having at least two isocyanate groups and (c) an alkoxysilane having at least one isocyanate group and/or an isocyanate-reactive group is claimed. The polyol comprises at least one polyether carbonate polyol, which is obtained by the addition of alkylene oxide and carbon dioxide onto hydrogen-functional starter. Independent claims are also included for: (1) preparing the alkoxysilane terminated prepolymer, comprising reacting the polyol (a) with the compound (b) to form an isocyanate or hydroxy terminated polyurethane prepolymer, and implementing the isocyanate or hydroxy-terminated polyurethane prepolymer with the alkoxysilane (c) to obtain the alkoxysilane terminated prepolymer; (2) a composition, comprising the alkoxysilane terminated prepolymer and at least one further component; (3) multi-component system comprising at least two separate components, where the first component comprises alkoxysilane terminated pre