| 摘要 |
<p>The invention concerns a monofunctional or multifunctional acrylated or methacrylated urethane oligomer in which said urethane bond is obtained without using isocyanate and by means of the carbonate-amine reaction between a cyclic carbonate and a monoamine or polyamine, followed by the conversion of theβ-hydroxyls of the urethane bond into ester-acids, by means of a reaction with a cyclic anhydride, said reaction being followed by the conversion of said acid functions into acrylated or methacrylated end groups by means of a reaction with a polyepoxide compound in the presence of acrylic or methacrylic acid. The invention also concerns a preparation method. Said oligomer is used as a crosslinkable binder having a functionality of at least 2, in coating, moulding, sealing agent or sealant compositions or, if monofunctional, as a macromonomer in polymerisable compositions for obtaining graft polymers.</p> |
