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Glyphosate dry suspension and preparation method and application thereof
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A dry suspension agent, glyphosate technology, applied in the field of its preparation, glyphosate dry suspension agent, can solve problems such as poor stability and disintegration
Active Publication Date: 2015-09-09
SHANDONG WEIFANG RAINBOW CHEM
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[0004] In the prior art, glyphosate herbicides mainly include liquid preparation water and solid preparation soluble granules, however, these glyphosate herbicides in the prior art have poor stability and disintegration
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[0035] The present invention also provides a kind of preparation method of glyphosate dry suspension concentrate as described in above-mentioned technical scheme, comprises the following steps:
[0036] mixing glyphosate, wetting agent, dispersant, defoamer, binder, disintegrant, carrier and water to obtain a slurry;
[0037] The slurry is dried and granulated to obtain a glyphosate dry suspension.
[0038] The invention mixes glyphosate, wetting agent, dispersant, defoamer, binding agent, disintegrating agent, carrier and water to obtain slurry.
[0039] In the present invention, the type, dosage and source of the glyphosate, wetting agent, dispersant, defoamer, binding agent, disintegrant and carrier are the same as those of glyphosate, wetting agent described in the above technical scheme , dispersant, defoamer, binder, disintegrant and carrier are the same in type, amount and source, and will not repeat them here.
[0040] In the present invention, the solid content of t...
[0075] Add 200kg of water, 32kg of glyphosate technical material with a content of 95%, 2kg of sodium lauryl sulfate, 4kg of polycarboxylate, 2kg of sodium lignosulfonate, 0.5kg of organic silicone, and sulfuric acid in a 500L mixing kettle. 5kg of sodium, 5kg of sodium carboxymethylcellulose, 4.8kg of gelatin, and 46.7kg of kaolin were mixed to obtain a slurry;
[0076] The uniformly mixed slurry is sanded by a sand mill until the particle size is qualified, and then the suspoemulsion slurry is pumped into a pressure spray dryer for drying and granulation. The spray pressure is controlled at 4MPa, and the drying gas inlet temperature is 140°C. The air outlet temperature is 75°C, and the granulated material is sieved to obtain 80-120 mesh glyphosate dry suspension concentrate.
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[0077]The present invention adopts the test method described in the above technical scheme to test the disintegration time, suspension rate and sieving of glyphosate dry suspension.
[0078] The performance test results of the prepared glyphosate dry suspension concentrate.
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Abstract
The invention provides a glyphosate dry suspension and a preparation method and application thereof. The glyphosate dry suspension is prepared by using the following components in percentage by mass: 30-85 percent of glyphosate, 2-20 percent of wetting agent, 1-20 percent of dispersing agent, 0.1-5 percent of defoaming agent, 1-5 percent of bonding agent, 1-10 percent of disintegrating agent and balance of carrier, wherein the disintegrating agent comprises one or a plurality of urea, sodiumchloride, sulfate, carbonate and sodium carboxymethylcellulose. The glyphosate dry suspension provided by the invention has relatively excellent stability and disintegrating property through the proportioning of the components with the contents; the content of effective components is higher; the control efficiency is higher; according to experimental results, after 14-day heated storage, no particles occur in more than 60 percent of the glyphosate dry suspension after screening; the suspension rate highly reaches 96.4 percent; the disintegrating time is 29-124s; the control efficiency is 88-99.05 percent after 14 days after application; the control efficiency is 88-99.72 percent after 28 days after application.
Description
technical field [0001] The invention belongs to the technical field of herbicides, in particular to a glyphosate dry suspension, its preparation method and application. Background technique [0002] Glyphosate is also known as Zhencao Ning, Roundup, Glyphosate, and Phosphonic Acid. The pure product of glyphosate is a non-volatile white solid with a specific gravity of 1.705, which melts at about 230°C and is accompanied by decomposition. Its solubility in water at 25°C is 1.2%, insoluble in common organic solvents, and its isopropylamine salt is completely soluble in water. Glyphosate is non-flammable, non-explosive, and stable at room temperature; it has a corrosive effect on medium-carbon steel and tin-plated iron. [0003] Glyphosate is a non-selective, non-residue herbicide developed by Monsanto Company of the United States. Glyphosate is a systemic chronic broad-spectrum herbicide that mainly inhibits enolacetonyl shikimelin phosphate synthase in the body, thereby in...
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