Method of producing glyoxylated hydroxypropyl guar and...

Details Method of producing glyoxylated hydroxypropyl guar and... Method of producing glyoxylated hydroxypropyl guar and...

A - Human Necessities

01

N

71/41

A01N 25/00 (2006.01) C05G 3/00 (2006.01) C08B 37/00 (2006.01)

Patent

CA 2002507

A liquid fertilizer composition having a substantial ability to retard leaching of constituent plant nutrients is prepared by dispersing glyoxylated hydroxypropyl guar in an aqueous mixture containing a fertilizer chemical in a preferred concentration of 0.4-1.5% by weight. Similarly, a liquid herbicide, fungicide, insecticide, fire retardant or other liquid plant treatment composition having the ability to adhere to applied surfaces to resist washing is prepared by dispersing glyoxylated hydroxypropyl guar in an aqueous mixture of such a plant treatment chemical in a corresponding concentration. A method is disclosed for producing glyoxylated hydroxypropyl guar by reacting guar gum with propylene oxide and the reaction product thereof with glyoxal in the absence of alcohol or any solvent.

Une composition fertilisante liquide possédant une grande capacité de lixiviation-retard des constituants nutritifs pour les plantes est préparée par dispersion d'un guar hydroxypropylique glyoxylé dans un mélange aqueux renfermant un engrais chimique, de préférence à une concentration de 0,4-1,5 % en poids. De même, une composition liquide, herbicide, fongicide, insecticide, ignifugeante, ou autre composition pour traitement des plantes, possédant la capacité d'adhérer aux surfaces d'application de façon à résister au lavage, est préparée par dispersion d'un guar hydroxypropylique glyoxylé dans un mélange aqueux renfermant ce type de composé pour traitement des plantes, à la concentration correspondante. On divulgue une méthode pour la production de guar hydroxypropylique glyoxylé par réaction de gomme guar avec de l'oxyde de propylène, puis du produit de la réaction avec le glyoxal en l'absence d'alcool ou de tout autre solvant.

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