Abstract The synthesis of polyurea via the addition of carbon dioxide (CO 2 ) to a diamine of 4,7,10‐trioxa‐1,13‐tridecanediamine (TOTDDA) was investigated by using organic and inorganic base catalysts. It was found that 1,8‐diazabicyclo[5.4.0]undec‐7‐ene (DBU) was the most active among the catalyst...