The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 01, 2013
Filed:
Oct. 06, 2003
Erik Alexander Bijpost, Nieuwegein, NL;
Luc Vanmarcke, Lembeke, BE;
Jacobus Gerardus Korver, Wormer, NL;
Ruud Van Belzen, Middelburg, NL;
Erik Alexander Bijpost, Nieuwegein, NL;
Luc Vanmarcke, Lembeke, BE;
Jacobus Gerardus Korver, Wormer, NL;
Ruud van Belzen, Middelburg, NL;
Yara International ASA, Oslo, NO;
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.