METHOD FOR CONTROLLED RELEASE OF CARBAMIDE-BASED PRODUCTS Russian patent published in 2004 - IPC

FIELD: agriculture, in particular, carbamide-based products released for predetermined controlled time period, may be used for producing of plant feeds and feed additives for animals.

SUBSTANCE: product includes particles or granules composed totally or prevailingly from carbamide or comprising carbamide in the vicinity or on outer surfaces of particles or granules, and moisture-impermeable coating defined by mutually permeable netted substance applied onto particles or granules. Coating is composed of product of reaction between carbamide and isocyanate reacting with carbamide, and products of reaction of excessive isocyanate with respect to amount thereof reacted with carbamide, alkyd resin and oil, having at least one double binder. Description of the invention also includes another version of said product, method of processing said particles for obtaining said product, method of feeding plants and method of feeding ruminant animals, involving stages of application of product into soil for prolonged period of time, for example, for 30-120 days, and introducing of product into animal rumen for time interval of 20-24 hours.

EFFECT: improved quality of product owing to constant speed of release of said product into soil for prolonged period of time and of introducing said product into animal rumen.

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