The synthesis of omega-hydroxyalkyl-urethanes, and of alfa-omega-diurethanes is reported which includes the reaction of diols with urea in presence of catalysts based on Ce at temperatures between 125 and 170°C over 4-8 h reaction time. A process for the production of oligomers of omega-hydroxyalkyl-urethanes is also reported based on the reaction of urea with diols in presence of Ce or Zr catalysts or Ce mixed oxides at 125-170°C over 4-20 h.
                            报道了合成ω-羟基烷基
脲和α-ω-二
脲的方法,其中包括二醇与
尿素在Ce基催化剂存在下在125至170°C温度下反应4-8小时。还报道了一种基于
尿素与二醇在Ce或Zr催化剂或Ce混合氧化物存在下在125-170°C温度下反应4-20小时的方法,用于生产ω-羟基烷基
脲的寡聚体。