C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 273/14 (2006.01) C05C 9/00 (2006.01)
Patent
CA 2569715
The invention relates to a method of improving the crushing strength and reducing the dust formation and the caking tendency of urea particles by the addition of an organic compound to the molten urea, where at least one carbohydrate and optionally a polyvinyl compound is added to the urea. The invention also relates to a composition to be used as a urea additive.
L'invention concerne un procédé d'amélioration de la résistance à l'écrasement et de réduction de la formation de poussières et de la tendance à la sédimentation des particules d'urée, qui consiste à ajouter un composé organique à l'urée fondue, au moins un glucide et éventuellement un composé polyvinylique étant également ajoutés à l'urée. Par ailleurs, l'invention concerne une composition utilisée comme additif d'urée.
Van Belzen Ruud
Vanmarcke Luc
Fetherstonhaugh & Co.
Yara International Asa
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