ore than 20 % of the total number of ring-closed and ring-opened benzoxazme structures [ 0020 ] Using different combinations of polyamines and/or polyphenols, the properties, such as glass transition temperature, viscosity and solubility of the thermoplastic curable benzoxazme macromonomers can be varied in a wide range Therefore the benzoxazme macromonomers of the present invention can be fluid t