C - Chemistry – Metallurgy – 05 – C
Patent
C - Chemistry, Metallurgy
05
C
C05C 9/00 (2006.01) C05G 3/00 (2006.01)
Patent
CA 2593283
Colourfast urea composition having reduced compressibility, cake formation and tendency of re-crystallization of the urea granulate, wherein the granulate further contains at least two different biodegradable polymers, of which at least one polymer is preferably a polyalkenyl amine compound. The other polymer is preferably polyaspartic acid or polyvinyl alcohol. The invention further relates to a process for the preparation of such a urea composition.
La présente invention concerne une composition d~urée à couleur soutenue qui présente des propriétés réduites de compressibilité, de formation de gâteau et de tendance à la recristallisation du granulé d~urée, où le granulé comprend en outre au moins deux polymères biodégradables différents, dont au moins un polymère est de préférence un composé de polyalcénylamine. L~autre polymère est de préférence de l~acide polyaspartique ou de l~alcool polyvinylique. La présente invention concerne en outre un procédé de préparation d~une telle composition d~urée.
Bijpost Erik Alexander
Van Belzen Ruud
Van Der Hoeven John
Vanmarcke Luc Albert
Fetherstonhaugh & Co.
Yara International Asa
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