研究了丙烯酸十八酯 (OA)在 Nd(P2 0 4 ) 3 - Al(i- Bu) 3 催化剂体系中的聚合反应 ,反应的最佳条件是 :以苯为溶剂 ,[Al]/[Nd]=9(摩尔比 ) ,[OA]/[Nd]=16 2 (摩尔比 ) ,6 0℃反应 6 h,聚合转化率大于 90 % ,所得聚合物的分子量为 1.0× 10 5～ 1.5× 10 5。聚合反应速率与单体浓度、催化剂浓度均呈一级关系 ,聚合反应的表观活化能为 32 .5k J/mol The polymerization of octadecyl acrylate (OA) in Nd (P2 0 4) 3 - Al (i-Bu) 3 catalyst system was studied. The optimal reaction conditions were as follows: benzene as solvent, [Al] ] = 9 (molar ratio), [OA] / [Nd] = 162 (molar ratio) and reacted at 60 DEG C for 6 hours to obtain a polymer conversion of more than 90%. The molecular weight of the obtained polymer was 1.0 x 105 to 1.5 x 10 5. The polymerization rate and monomer concentration, catalyst concentration showed a first-order relationship, the apparent activation energy of polymerization was 32.5kJ / mol