Synthesis and characterization of green urethane non-isocyanate from oleic acid for wood composite application by Ghozali, Muhammad, Bakhri, Samsul, Triwulandari, Evi, Restu, Witta Kartika, Meliana, Yenny, Haryono, Agus, Septiyanti, Melati, Solihat, Nissa Nurfajrin, Lee, Seng Hua, Fatriasari, Widya, Antov, Petar