Invention Grant
- Patent Title: Method of improving the properties of urea granules
- Patent Title (中): 改善尿素颗粒性能的方法
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Application No.: US10574784Application Date: 2003-10-06
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Publication No.: US08343891B2Publication Date: 2013-01-01
- Inventor: Erik Alexander Bijpost , Luc Vanmarcke , Jacobus Gerardus Korver , Ruud van Belzen
- Applicant: Erik Alexander Bijpost , Luc Vanmarcke , Jacobus Gerardus Korver , Ruud van Belzen
- Applicant Address: NO Oslo
- Assignee: Yara International ASA
- Current Assignee: Yara International ASA
- Current Assignee Address: NO Oslo
- Agency: Wenderoth, Lind & Ponack, L.L.P.
- International Application: PCT/EP03/11069 WO 20031006
- International Announcement: WO2005/040072 WO 20050506
- Main IPC: A01N59/00
- IPC: A01N59/00 ; A01N25/00 ; C05C9/00

Abstract:
A method of improving the properties of urea granulates, more especially the caking tendency, the dust formation and the foaming tendency in aqueous media, by the addition of an additive to the urea, wherein the additive comprises a carboxylic acid compound with the general formula XY—(Z)—COOH, in which Z is a saturated or unsaturated hydrocarbon with 1-25 carbon atoms and X and Y are selected from the group consisting of a hydrogen atom or a polar organic functional group, and in that the additive is added as a solution in a polar solvent to the urea granulates, which are subsequently dried.
Public/Granted literature
- US20070125142A1 Method of improving the properties of urea granules Public/Granted day:2007-06-07
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