CN102823622B - Glyphosate soluble effervescent tablet and preparation method thereof - Google Patents
Glyphosate soluble effervescent tablet and preparation method thereof Download PDFInfo
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- CN102823622B CN102823622B CN2012103558699A CN201210355869A CN102823622B CN 102823622 B CN102823622 B CN 102823622B CN 2012103558699 A CN2012103558699 A CN 2012103558699A CN 201210355869 A CN201210355869 A CN 201210355869A CN 102823622 B CN102823622 B CN 102823622B
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- glyphosate
- effervescent tablet
- tablet
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- binding agent
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Abstract
The invention discloses a glyphosate soluble effervescent tablet which is mainly prepared by the following components of: glyphosate, a gas generating source, a surfactant, a filling material, a binding agent, a flow aid agent, an inert filler and the like. The invention further discloses a preparation method thereof. The preparation method comprises the following steps of: mixing and crushing the glyphosate, the filling material and the binding agent to be in above 150-mesh state, performing extruding, granulating, size stabilizing and screening, and further tabletting with the gas generating source and the flow aid agent so as to obtain the glyphosate soluble effervescent tablet. The glyphosate soluble effervescent tablet disclosed by the invention has the advantages of specific shape, accurate single-tablet weight, no flying of dust, as well as the properties of being boiling during foaming and fast in disintegration and dissolution, thereby being an environment-friendly new pesticide formulation. Furthermore, the production process is simple, the use is convenient, the glyphosate soluble effervescent tablets can be directly thrown and sprayed in paddy fields so as to automatically disintegrate and diffuse, and can also be put into a sprayer to be spayed and applied on crop targets after disintegration and diffusion.
Description
Technical field
The present invention relates to a kind of weed killer herbicide that is applied to farmland, be specifically related to a kind of soluble glyphosate effervescent tablet and preparation method thereof.
Background technology
The basic principle of effervescent table as agricultural chemical is to contain acidic materials (acid source) and the material of the getting angry (source of getting angry in tablet, be generally the basic salt containing carbonate, as carbonic hydroammonium, sodium carbonate etc.), after tablet is met water, neutralization reaction occurs with the source of getting angry in acid source, discharge carbonic acid gas, thereby reach foaming boiling, quickly disintegrated effect, effervescent table as agricultural chemical can directly be shed disintegration diffusion voluntarily in paddy field in use, also can drop into disintegration in sprayer and spray in the crop target after disperseing.
At present China's glyphosate formulation is mainly aqua, pulvis and granule, due to glyphosate and salt solvability in water lower, the general content of aqua product is lower, becomes progressively delisting kind; Pulvis flies upward drift because it is serious, and the user is had to grievous injury; Granule is more advanced formulation, but defects such as comparing with soluble effervescent tablet of the present invention and have that disintegration time is long, the relative difficulty of metering, packing cost are high, and the soluble effervescent tablet due to have given configuration, accurately monolithic weight, without dust wave, easy to use, have again foaming boiling, disintegration fast, rapidly-soluble characteristic, be a kind of environmentally friendly pesticides new formulation simultaneously.
Effervescent table as agricultural chemical generally is comprised of pesticide original medicine, acid source, carbon dioxide source, surfactant, free-flow agent, binding agent, inert filler etc.Because the glyphosate agricultural chemicals itself is exactly a ternary acid, so can be used as acid source uses, after effervescent tablet is met water, the glyphosate salt that neutralization reaction is converted into solubility occurs with the source of getting angry in glyphosate, discharge carbonic acid gas simultaneously, thereby reach foaming boiling, disintegration fast, rapidly-soluble effect, can directly shed in use disintegration diffusion voluntarily in paddy field, also can drop into disintegration in sprayer and spray in the crop target after disperseing.
Summary of the invention
Goal of the invention: for the shortcoming that overcomes the existing preparation of glyphosate is studied successful a kind of environmentally friendly soluble glyphosate effervescent tablet novel agrochemical.
Another object of the present invention has been to provide the preparation method of this soluble glyphosate effervescent tablet.
Technical scheme: a kind of soluble glyphosate effervescent tablet comprises the component of following mass percent: glyphosate 10～68%, the source 5～30% of getting angry, and surfactant 1～8%, binding agent 0.5～3%, free-flow agent 1～5%, surplus is inserts.
As optimization, the described source of getting angry is one or more in sodium bicarbonate or carbonic hydroammonium or sodium carbonate or potash.
As optimization, described surfactant is one or more in penetrating agent BX or sodium lignin sulfonate or lauryl sodium sulfate or PO-EO block polyether or acrylate homopolymer sodium salt or dispersant N or maleic acid-acrylic acid copolymer sodium salt or phenolsulfonic acid condensation product sodium salt or naphthalene sulfonic acid condensate sodium salt or alkylphenol ethoxylate.
As optimization, described binding agent is one or more in water soluble starch or sodium carboxymethyl starch or polyethylene glycol PEG4000 or polyethylene glycol PEG6000.
As optimization, described free-flow agent is one or more in white carbon or dolomol or talcum powder.
As optimization, described inserts is the inertia filler, selects one or more in sucrose or glucose or sodium sulphate or ammonium sulfate.
The preparation method of described soluble glyphosate effervescent tablet, its step is as follows:
(1) prepare master batch: glyphosate technicals, surfactant, inert filler that accurate-metering is good mix in mixer, more than it is crushed to 150 orders, powder is collected in another mixer, add 5～15% aqueous solution that are dissolved with binding agent to mediate, obtain wet granular through extruder grain, dry to moisture content and be less than 1%, more whole grain sieves, get 30～60 order particles, stand-by;
(2) compressing tablet: master batch, the source of getting angry, free-flow agent that by accurate-metering prepared by good above-mentioned steps (1) mix in mixer, be pressed into the tablet of given configuration in tablet press machine, diameter can be selected between 5～40mm, thickness can be selected between 3～15mm, and monolithic weight is at 0.5～20g.
The invention has the advantages that: having given configuration, accurate monolithic weight, wave without dust, having again the characteristic of foaming boiling, quick disintegration dissolving simultaneously, is a kind of environmentally friendly pesticides new formulation.And production technology is simple, easy to use, can directly shed disintegration diffusion voluntarily in paddy field, also can drop into disintegration in sprayer and spray in the crop target after disperseing.
Embodiment
Embodiment 1
The preparation of the soluble glyphosate effervescent tablet that glyphosate content is 10%.
(1) prepare 50% glyphosate master batch: the good 95% glyphosate technicals 52.6kg by accurate-metering, surfactant---sodium lignin sulfonate 2kg, naphthalene sulfonic acid condensate sodium salt 6kg, inert filler---glucose 10kg, ammonium sulfate 28.5kg mixes in mixer, more than it is crushed to 150 orders, powder is collected in another mixer, adding 9kg to be dissolved with binding agent---the aqueous solution of 10% PEG6000 is mediated, obtain the column wet granular through extruder grain, dry to moisture content and be less than 1%, by the whole grain of pelletizing machine vibratory sieve, sieved again, get 30～60 order particles, stand-by.
(2) compressing tablet: by accurate-metering prepared by good above-mentioned (1), and master batch 50kg, potash 48kg, free-flow agent---sodium sulphate 2kg mixes in mixer, in tablet press machine, routine is pressed into circular tablet, diameter 12mm, thickness 3.5mm, monolithic weight is in the 1.0g left and right.
(3) performance test: active ingredient: 10.20%; Disintegration time: 81s; PH value: the 4.7(1% aqueous solution).Percentage composition in the present embodiment is mass percent.
Embodiment 2
The preparation of the soluble glyphosate effervescent tablet that glyphosate content is 68%.
(1) prepare 89.5% glyphosate master batch: ammonium sulfate 1.9kg mixes in mixer for 95% glyphosate technicals 94.2kg, surfactant---maleic acid-acrylic acid copolymer sodium salt 3kg, inert filler---that accurate-metering is good; more than it is crushed to 150 orders; powder is collected in another mixer; adding 9kg to be dissolved with binding agent---the aqueous solution of 10% water soluble starch is mediated; obtain the column wet granular through extruder grain; dry to moisture content and be less than 1%; by the whole grain of pelletizing machine vibratory sieve, sieved again; get 30～60 order particles, stand-by.
(2) compressing tablet: master batch 76kg, sodium carbonate 22kg, free-flow agent that by accurate-metering prepared by good above-mentioned (1)---dolomol 1kg, white carbon 1kg mix in mixer, in tablet press machine, routine is pressed into circular tablet, diameter 24mm, thickness 8mm, monolithic weight is in the 12.5g left and right.
(3) performance test: active ingredient: 68.08%; Disintegration time: 77s; PH value: the 4.8(1% aqueous solution).Percentage composition in the present embodiment is mass percent.
Embodiment 3
The preparation of the soluble glyphosate effervescent tablet that glyphosate content is 30%.
(1) prepare 32.6% glyphosate master batch: 95% glyphosate technicals 34.3kg, surfactant---alkylphenol ethoxylate 4kg, inert filler---sucrose 33kg, sodium sulphate 27.6kg that accurate-metering is good mix in mixer; more than it is crushed to 150 orders; powder is collected in another mixer; adding 9kg to be dissolved with binding agent---the aqueous solution of 12% sodium carboxymethyl starch is mediated; obtain the column wet granular through extruder grain; dry to moisture content and be less than 1%; by the whole grain of pelletizing machine vibratory sieve, sieved again; get 30～60 order particles, stand-by.
(2) compressing tablet: by accurate-metering prepared by good above-mentioned (1), and master batch 92kg, sodium bicarbonate 17kg, free-flow agent---talcum powder 1kg mixes in mixer, in tablet press machine, routine is pressed into circular tablet, diameter 16mm, thickness 6mm, monolithic weight is in the 6g left and right.
(3) performance test: active ingredient: 30.12%; Disintegration time: 80s; PH value: the 4.2(1% aqueous solution).Percentage composition in the present embodiment is mass percent.
The embodiment of the present invention is tested for preventing and kill off the citrus orchard weeds, 30 days total preventive effects of " Invest, Then Investigate ", and result shows consistent with commercially available aqua effect, sees the following form:
Claims (6)
1. a soluble glyphosate effervescent tablet, the component that comprises following mass percent: glyphosate 10～68%, the source 5～30% of getting angry, surfactant 1～8%, binding agent 0.5～3%, free-flow agent 1～5%, surplus is inserts, it is characterized in that: surfactant is one or both in maleic acid-acrylic acid copolymer sodium salt or alkylphenol ethoxylate.
2. a kind of soluble glyphosate effervescent tablet according to claim 1, it is characterized in that: the described source of getting angry is carbon
One or more in acid hydrogen sodium or carbonic hydroammonium or sodium carbonate or potash.
3. a kind of soluble glyphosate effervescent tablet according to claim 1, it is characterized in that: described binding agent is one or more in water soluble starch or sodium carboxymethyl starch or polyethylene glycol PEG4000 or polyethylene glycol PEG6000.
4. a kind of soluble glyphosate effervescent tablet according to claim 1, it is characterized in that: described free-flow agent is one or more in white carbon or dolomol or talcum powder.
5. a kind of soluble glyphosate effervescent tablet according to claim 1, it is characterized in that: described inserts is the inertia filler, selects one or more in sucrose or glucose or sodium sulphate or ammonium sulfate.
6. the preparation method of soluble glyphosate effervescent tablet as claimed in claim 5 is characterized in that:
(1) prepare master batch: glyphosate technicals, surfactant, inertia filler that accurate-metering is good mix in mixer, more than it is crushed to 150 orders, powder is collected in another mixer, add 5～15% aqueous solution that are dissolved with binding agent to mediate, obtain wet granular through extruder grain, dry to moisture content and be less than 1%, more whole grain sieves, get 30～60 order particles, stand-by;
(2) compressing tablet: master batch, the source of getting angry, free-flow agent that by accurate-metering prepared by good above-mentioned steps (1) mix in mixer, be pressed into the tablet of given configuration in tablet press machine, diameter is selected between 5～40mm, thickness is selected between 3～15mm, and monolithic weight is at 0.5～20g.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103558699A CN102823622B (en) | 2012-09-24 | 2012-09-24 | Glyphosate soluble effervescent tablet and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012103558699A CN102823622B (en) | 2012-09-24 | 2012-09-24 | Glyphosate soluble effervescent tablet and preparation method thereof |
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| Publication Number | Publication Date |
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| CN102823622A CN102823622A (en) | 2012-12-19 |
| CN102823622B true CN102823622B (en) | 2013-12-11 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170252295A1 (en) | 2014-09-17 | 2017-09-07 | Steerlife India Private Limited | Effervescent composition and method of making it |
| WO2017098481A1 (en) | 2015-12-12 | 2017-06-15 | Steerlife India Private Limited | Effervescent compositions of metformin and processes for preparation thereof |
| CN108207947A (en) * | 2017-11-21 | 2018-06-29 | 东南大学 | A kind of diquat dibromide soluble effervescent tablet and preparation method thereof |
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| CN1074083A (en) * | 1992-01-06 | 1993-07-14 | 纳幕尔杜邦公司 | The tablet formulation that contains internal desiccant |
| CN1234176A (en) * | 1999-01-15 | 1999-11-10 | 中国科学院生态环境研究中心 | Effervescence farm-chemical composition and production method thereof |
| CN1283388A (en) * | 2000-05-17 | 2001-02-14 | 西北农林科技大学无公害农药研究服务中心 | Effervescent table as agricultural chemical and its preparing process |
| US6475954B2 (en) * | 2000-10-23 | 2002-11-05 | Schirm Ag | Solid glyphosphate-formulation and manufacturing process |
| CN1462582A (en) * | 2002-05-27 | 2003-12-24 | 浙江新安化工集团股份有限公司 | Soluble solid dosage typed salt of glyphosate |
| CN1504093A (en) * | 2002-12-04 | 2004-06-16 | 四川贝尔实业有限责任公司 | Solid soluble glyphosate formulation |
| CN101773143A (en) * | 2010-02-18 | 2010-07-14 | 浙江新安化工集团股份有限公司 | Compounded weed killer of glyphosate and glufosinate |
| CN102177906A (en) * | 2011-03-16 | 2011-09-14 | 广西壮族自治区化工研究院 | Herbicide effervescent tablets and preparation method thereof |
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2012
- 2012-09-24 CN CN2012103558699A patent/CN102823622B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1069850A (en) * | 1991-07-08 | 1993-03-17 | 库米埃化学工业株式会社 | The solid composite of agricultural chemical and its preparation method |
| CN1074083A (en) * | 1992-01-06 | 1993-07-14 | 纳幕尔杜邦公司 | The tablet formulation that contains internal desiccant |
| CN1234176A (en) * | 1999-01-15 | 1999-11-10 | 中国科学院生态环境研究中心 | Effervescence farm-chemical composition and production method thereof |
| CN1283388A (en) * | 2000-05-17 | 2001-02-14 | 西北农林科技大学无公害农药研究服务中心 | Effervescent table as agricultural chemical and its preparing process |
| US6475954B2 (en) * | 2000-10-23 | 2002-11-05 | Schirm Ag | Solid glyphosphate-formulation and manufacturing process |
| CN1462582A (en) * | 2002-05-27 | 2003-12-24 | 浙江新安化工集团股份有限公司 | Soluble solid dosage typed salt of glyphosate |
| CN1504093A (en) * | 2002-12-04 | 2004-06-16 | 四川贝尔实业有限责任公司 | Solid soluble glyphosate formulation |
| CN101773143A (en) * | 2010-02-18 | 2010-07-14 | 浙江新安化工集团股份有限公司 | Compounded weed killer of glyphosate and glufosinate |
| CN102177906A (en) * | 2011-03-16 | 2011-09-14 | 广西壮族自治区化工研究院 | Herbicide effervescent tablets and preparation method thereof |
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| CN102823622A (en) | 2012-12-19 |
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Granted publication date: 20131211 Termination date: 20180924 |