SMART RELEASE POTASH FERTILIZER GRANULES

• Main Authors: VO, Sony T, NGUYEN, Vinh Q, KIM, Van T, LE, Nhien H, TRAN, Hoa V, NGUYEN, My T, LY, Man M, THACH, Na
• Format: Patent
• Language: English; French
• Published: 15.08.2019
• Subjects: AGRICULTURE; ANIMAL HUSBANDRY; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES, AS HERBICIDES; CHEMISTRY; COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM; FERTILISERS; FERTILISERS CHARACTERISED BY THEIR FORM; FISHING; FORESTRY; HUMAN NECESSITIES; HUNTING; INORGANIC CHEMISTRY; MANUFACTURE THEREOF; METALLURGY; MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENTSUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVINGA SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES,SOIL-CONDITIONERS, WETTING AGENTS; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS; PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTSTHEREOF; TRAPPING

There is provided a smart release potash fertilizer granule comprising a potash core; an extended release layer covering the potash core, wherein the extended release layer comprises water-swellable copolymeric nanoparticles and at least one water-soluble organic acid or water-soluble organic carboxylate salt; a controlled release layer covering the extended release layer, wherein the controlled release layer comprises water-swellable copolymeric nanoparticles; and an anticaking layer covering the controlled release layer, wherein the anticaking layer comprises water-insoluble copolymeric nanoparticles. L'invention concerne un granulé d'engrais potassique à libération intelligente comprenant un noyau de potasse ; une couche de libération prolongée recouvrant le noyau de potasse, la couche de libération prolongée comprenant des nanoparticules copolymères gonflables dans l'eau et au moins un acide organique soluble dans l'eau ou un sel de carboxylate organique soluble dans l'eau ; une couche à libération contrôlée recouvrant la couche de libération prolongée, la couche à libération contrôlée comprenant des nanoparticules copolymères gonflables dans l'eau ; et une couche anti-agglomérante recouvrant la couche à libération contrôlée, la couche anti-agglomérante comprenant des nanoparticules copolymères insolubles dans l'eau.