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Smart release nitrogen-containing fertilizer granules

A technology of fertilizer granules and nitrogen fertilizers, applied in nitrogen fertilizers, inorganic fertilizers, organic fertilizers, etc., can solve problems such as unsuitability for use and urea granules sticking together.

Active Publication Date: 2020-10-30
瑞南科技私人有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, these urea granules tend to stick together, which makes them unsuitable for use with fertilizer applicators

Method used

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  • Smart release nitrogen-containing fertilizer granules

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0471] Example 1 - Water-swellable copolymer nanoparticles POLY-001

[0472] Synthesis of copolymer nanoparticles POLY-001 (as an aqueous suspension) was accomplished by mixing a prepolymer solution comprising 236 Kg of deionized water, 39.6 Kg styrene, 39.6Kg n-butyl acrylate, 0.82Kg acrylic acid, 2.48Kg triethoxyvinylsilane, 0.82Kg ammonium bicarbonate and 0.82Kg n-octanol. In a separate small tank, a solution of ammonium persulfate free radical initiator was prepared by dissolving 0.42 Kg of ammonium persulfate in 10 Kg of deionized water.

[0473] One hundred and sixty kilograms of prepolymer solution was charged to the reactor. The temperature was slowly raised to 80°C and the remaining prepolymer solution was added to the reactor at a rate of 32.0 Kg per hour using a metering pump. At the same time, ammonium persulfate solution was also fed into the reactor using a metering pump at a rate of 2.00 Kg per hour.

[0474] After the two solutions were completely added to t...

example 2

[0480] Example 2 - Water insoluble copolymer nanoparticles POLY-004

[0481] Synthesis of copolymer nanoparticles POLY-004 (as an aqueous suspension) was accomplished by mixing a prepolymer solution comprising 236 Kg of deionized water, 50.0 Kg styrene, 50.0Kg butyl methacrylate, 0.82Kg ammonium bicarbonate and 0.82Kg n-octanol. In a separate small tank, a solution of ammonium persulfate free radical initiator was prepared by dissolving 0.42 Kg of ammonium persulfate in 10 Kg of deionized water.

[0482] One hundred and sixty kilograms of prepolymer solution was charged to the reactor. The temperature was slowly raised to 80°C and the remaining prepolymer solution was added to the reactor at a rate of 32.0 Kg per hour using a metering pump. At the same time, ammonium persulfate solution was also fed into the reactor using a metering pump at a rate of 2.00 Kg per hour.

[0483] After the two solutions were completely added to the reactor, the polymerization was continued at ...

example 3

[0489] Example 3 - Water insoluble copolymer nanoparticles POLY-005

[0490] Synthesis of copolymer nanoparticles POLY-005 (as an aqueous suspension) was accomplished by mixing a prepolymer solution comprising 236 Kg of deionized water, 47.0 Kg styrene, 50.0Kg butyl methacrylate, 3.00Kg N,N-dimethylaminoethyl methacrylate, 0.82Kg ammonium bicarbonate and 0.82Kg n-octanol. In a separate small tank, a solution of ammonium persulfate free radical initiator was prepared by dissolving 0.42 Kg of ammonium persulfate in 10 Kg of deionized water.

[0491] One hundred and sixty kilograms of prepolymer solution was charged to the reactor. The temperature was slowly raised to 80°C and the remaining prepolymer solution was added to the reactor at a rate of 32.0 Kg per hour using a metering pump. At the same time, ammonium persulfate solution was also fed into the reactor using a metering pump at a rate of 2.00 Kg per hour.

[0492] After the two solutions were completely added to the r...

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Abstract

There is provided a nitrogen fertilizer granule in which the nitrogen release can be timed and the nitrogen release rate can be controlled according to the needs of the plants to be fertilized. The smart release nitrogen-containing fertilizer granule comprises a nitrogen-containing fertilizer core; an organic functional layer covering the core, wherein the organic functional layer comprises at least one functional organic compound that is an enzyme inhibitor, a microbial suppressor, a phosphorus solubilizer, and / or a plant hormone; a controlled release layer covering the organic functional 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.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of U.S. Provisional Application Serial No. 62 / 628,646, filed February 9, 2018, under 35 U.S.C. §119(e). technical field [0003] The invention relates to intelligent release type nitrogenous fertilizer granules. More specifically, the present invention relates to nitrogen fertilizer granules wherein the release of nitrogen can be timed and the rate of nitrogen release can be controlled according to the needs of the plants to be fertilized. Background technique [0004] Nitrogen-containing fertilizers such as urea, ammonium sulfate, monoammonium phosphate, and diammonium phosphate are widely used in agriculture, especially in rice cultivation in Asia. However, more than 50% of the nitrogen applied through conventional fertilizers is lost due to leaching, water loss, soil immobilization, and volatilization of ammonia and nitrous oxide gases. Indeed, nitrogen fertilizers added to soi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/30C05G3/40C05G3/60C05G3/90C05G5/30A01N33/22A01N37/04A01N37/10A01N37/36A01N37/40A01N39/04A01N43/38A01N43/90A01P21/00
CPCC05C3/00A01N25/12C05G5/30C05G5/37Y02P60/21A01N37/10A01N37/36A01N37/40A01N37/48A01N39/04A01N43/12A01N43/38A01N43/40A01N45/00C05C9/005C05D1/00C05D9/02C05F11/08C05F11/10C05G3/90C05G5/12C05B7/00C05D1/005C05D1/02A01N25/10C05G3/30B82Y5/00B82Y30/00
Inventor M·T·阮H·V·德兰M·M·李V·T·金姆N·H·乐N·撒奇S·T·沃V·Q·阮
Owner 瑞南科技私人有限公司
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