| 摘要 |
The invention relates to amine-epoxy adducts with symmetrical and asymmetrical structures based on one hand on aliphatic, cycloaliphatic, araliphatic or aromatic mono-, di- and triamines, and on the other hand on aliphatic, cycloaliphatic and aromatic, mono-, di- or polyepoxy compounds, having an average molecular mass (Mn) of more than 300, but less than 8000, preferably less than 6000, containing at least one, preferably on an average more than one alcoholic hydroxyl group per molecule which is formed in the course of the epoxy-amine reaction, which contain at least two amino groups per molecule being able to react with isocyanate groups, among those maximum one is primary amine, the adduct molecules are of polymeric character and their viscosity is≰300 mPas at 70° C. The invention also relates to the process for the preparation of these adducts, and to their use for preparing sprayable polyurea and polyurea-polyurethane coatings. |
