RADIATION CURABLE ACRYLATE-TERMINATED POLYMERS HAVING POLYCARBONATE REPEATING UNITS

摘要

Polymer having repeating polycarbonate moieties of Formula (I): (Acr)y(A)(Q)(PC)[(Q)(PC)]x(Q)(A)(Acr)y, 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 polyisocyanates which are connected with A via a urethane linkage; PC is the residue of an alkylene diol polycarbonate of Formula (II): HO(ROCOO)nROH, 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.