JIANCHAO CHEN; YAQING LIU; HONGFANG JIU; PEIHUA ZHAO; FUTIAN ZHU
(HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2012-06-20)
a novel slow-release nitrogen fertilizer poly(carbonyl urea)oligomer (PCUO) was prepared by the condensation polymerization of urea and dipropyl carbonate (DPrC) at normal pressure, in which anhydrous potassium carbonate ...