RADIATION CURABLE ACRYLATE-TERMINATED POLYMERS HAVING POLYCARBONATE REPEATING UNITS

摘要

Polymer having repeating polycarbonate moieties of the formula (I)wherein(Acr)y(A) is the residue of hydroxyalkyl acrylate or hydroxyalkyl methacrylate having an alkyl moiety, A, and where said alkyl, A, has 2 to 5 carbon atoms and wherein Acr is an acrylate or methacrylate moiety;Q is the residue of one or more organic polyisocyantes which are connected with A via a urethane linkage;PC is the residue of an alkylene diol polycarbonate of the formula (II)R is one or more (C2 to C10) alkylene or one or more (C6 to C12) aromatic group;y is an integer from 1 to 5;x is from 1 to 20;PC and Q are connected via a urethane group.The acrylate terminate polymers are useful for radiation cured coatings which have superior adhesion and reverse impact strength, especially when applied to plastic substrates.