Abstract
The paper presents the synthesis of bis-Mannich polyolic compounds with high aromatic content and thermostable structures. Synthesis of bis-Mannich polyolic bases was performed by the reaction of acidic substrates such as phenols with the Mannich precursor reagent, such as bis-1,3-oxazolidine derivate compound, followed by alkoxylation in the absence of a catalyst. Applications of these polyols are poured and “spray” rigid polyurethane foams synthesis with high thermostability and enhanced flame retardancy properties. Keyword: N,N’-hydroxyethyl-bis-1,3-oxazolidine; bis-Mannich polyether polyols; rigid polyurethane foams