Facile Synthesis of Poly (Carbonyl Urea) Oligomer (Pcuo) from   Urea and Dipropyl Carbonate (Dprc) Applied as   Nitrogen Slow-Release Fertilizers

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Title:	Facile Synthesis of Poly (Carbonyl Urea) Oligomer (Pcuo) from Urea and Dipropyl Carbonate (Dprc) Applied as Nitrogen Slow-Release Fertilizers
Authors:	JIANCHAO CHEN YAQING LIU HONGFANG JIU PEIHUA ZHAO FUTIAN ZHU
Issue Date:	20-Jun-2012
Publisher:	HEJ Research Institute of Chemistry, University of Karachi, Karachi.
Citation:	Chen, J., Liu, Y., Jiu, H., Zhao, P., & Zhu, F. (2012). Facile Synthesis of Poly (Carbonyl Urea) Oligomer (Pcuo) from Urea and Dipropyl Carbonate (Dprc) Applied as Nitrogen Slow-Release Fertilizers. Journal of the Chemical Society of Pakistan, 34(3).
Abstract:	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 was as a catalyst. The oligomer was characterized by FT-IR, ¹H-NMR, and ¹³C-NMR spectroscopy, which showed that the average degree of PCUO was 1 to 5. The effects of the molar ratio of urea to DPrC, reaction time as well as the temperature on the yields were investigated and optimized. In addition, the slow-release behaviour of PCUO was evaluated in distilled water, which revealed that the product had good slow-release property.
URI:	http://142.54.178.187:9060/xmlui/handle/123456789/20020
ISSN:	0253-5106
Appears in Collections:	Issue 03

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