RU2203547C2 - Composition with controlled gradual isolation of active ingredient for delivering agricultural chemical to plants, methods for its delivery to plants and method for obtaining this composition - Google Patents

Composition with controlled gradual isolation of active ingredient for delivering agricultural chemical to plants, methods for its delivery to plants and method for obtaining this composition Download PDF

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RU2203547C2
RU2203547C2 RU2000102350/04A RU2000102350A RU2203547C2 RU 2203547 C2 RU2203547 C2 RU 2203547C2 RU 2000102350/04 A RU2000102350/04 A RU 2000102350/04A RU 2000102350 A RU2000102350 A RU 2000102350A RU 2203547 C2 RU2203547 C2 RU 2203547C2
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Russia
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agricultural chemical
microparticles
polymer
composition according
plants
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RU2000102350/04A
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Russian (ru)
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RU2000102350A (en
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М. Фрэнсис БОТТС (US)
М. Фрэнсис БОТТС
Фрэнк К. КОН (US)
Фрэнк К. КОН
Мари Л. МИЛЛЕР (US)
Мария Л. МИЛЛЕР
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Монсанто Компани
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Abstract

FIELD: agriculture. SUBSTANCE: the suggested composition contains microparticles at average diameter ranged 0.2-200 micron, moreover, each of them includes polymeric matrix and matrix-distributed agricultural chemical chosen out of ciproconasol, epoxyconasol and thebuconasol, moreover, microparticles should be included from 1% to 50% against weight of agricultural chemical and from 50% to 99% against the weight of polymeric matrix mentioned and consisting of polymer chosen out of the group including polymethylmethacrylate, lactic acid polymer, copolymers of lactic and glycolic acids, cellulose acetatebutyrate, polystyrene, copolymers of oxybutyric and oxyvaleric acids, copolymers of styrene and maleic anhydride, extraction colophony, acryl polymer and copolymer of vinylpyrrolidone and vinylacetate and their combination. There are, also, described method for delivering the above-mentioned composition onto plants, so, to apply about 1-10 g chemical/ha, and method for covering seeds with the above-mentioned composition, so, to apply about 1-500 g chemical/100 kg seeds. It is described the method to obtain such a composition including a) dissolving agricultural chemical and polymer in organic solvent to form hydrophobic solution, b) mixing it and aqueous medium at shift rate and for the period of time sufficient to obtain emulsion with drops of hydrophobic solution dispersed in aqueous medium, c) evaporation of organic solvent out of emulsion. Microparticles release agricultural chemical at the rate being sufficiently low to avoid phytotoxicity, but at the rate being sufficiently high to provide its efficient quantity during the whole vegetative period in plants. EFFECT: higher efficiency. 12 cl, 23 dwg, 2 tbl

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Текст описания в факсимильном виде (см. графическую часть). Ти Description text in facsimile form (see graphic part). T

Claims (12)

1. Состав с контролируемым постепенным выделением активного ингредиента для доставки к растениям сельскохозяйственного химиката, содержащий микрочастицы, имеющие средний диаметр от 0,2 до 200 мкм, каждая из которых включает полимерную матрицу и распределенный в полимерной матрице сельскохозяйственный химикат, выбранный из ципроконазола, эпоксиконазола и тебуконазола, причем микрочастицы включают от 1 до 50% по весу сельскохозяйственного химиката и от 50 до 99% по весу указанной полимерной матрицы, состоящей из полимера, выбранного из группы, включающей полиметилметакрилат, полимер молочной кислоты, сополимеры молочной и гликолевой кислот, ацетатбутират целлюлозы, полистирол, сополимеры оксимасляной кислоты и оксивалериановой кислоты, сополимеры стирола и малеинового ангидрида, сополимеры метилвинилового эфира и малеиновой кислоты, экстракционную канифоль, акриловый полимер и сополимер винилпирролидона и винилацетата и их комбинации. 1. A composition with controlled gradual release of the active ingredient for delivering an agricultural chemical to plants, containing microparticles having an average diameter of 0.2 to 200 microns, each of which includes a polymer matrix and an agricultural chemical distributed in a polymer matrix selected from cyproconazole, epoxyconazole and tebuconazole, wherein the microparticles comprise from 1 to 50% by weight of an agricultural chemical and from 50 to 99% by weight of said polymer matrix consisting of a polymer selected from the group including polymethylmethacrylate, a lactic acid polymer, copolymers of lactic and glycolic acids, cellulose acetate butyrate, polystyrene, copolymers of hydroxybutyric acid and hydroxyvaleric acid, copolymers of styrene and maleic anhydride, copolymers of methyl vinyl ether and maleic acid, vinyl vinyl ester and isopolymer and resin combinations. 2. Состав по п. 1, в котором микрочастицы включают от 15 до 50% по весу сельскохозяйственного химиката. 2. The composition according to p. 1, in which the microparticles include from 15 to 50% by weight of the agricultural chemical. 3. Состав по п. 1 или 2, в котором микрочастицы включают от 50 до 85% по весу полимерной матрицы. 3. The composition according to p. 1 or 2, in which the microparticles include from 50 to 85% by weight of the polymer matrix. 4. Состав по любому из пп. 1-3, в котором микрочастицы имеют средний диаметр от 1 до 50 мкм, предпочтительно от 3 до 50 мкм. 4. The composition according to any one of paragraphs. 1-3, in which the microparticles have an average diameter of from 1 to 50 microns, preferably from 3 to 50 microns. 5. Состав по любому из пп. 1-4, выбранный из группы, состоящей из суспензии микрочастиц в водной среде, смачивающегося порошка, смачивающихся гранул, сухих гранул и составов для покрытия семян. 5. The composition according to any one of paragraphs. 1-4, selected from the group consisting of a suspension of microparticles in an aqueous medium, wettable powder, wettable granules, dry granules and seed coating compositions. 6. Состав по любому из пп. 1-5, включающий такое количество сельскохозяйственного химиката и выделяющий его с такой скоростью, чтобы состав обеспечивал доставку к растению сельскохозяйственно-активного количества химиката в течение периода, равного, по меньшей мере, от двух недель до двенадцати недель. 6. The composition according to any one of paragraphs. 1-5, including such an amount of agricultural chemical and releasing it with such a speed that the composition ensures the delivery to the plant of an agriculturally active amount of chemical for a period of at least two weeks to twelve weeks. 7. Состав по пп. 1-6, в котором полимер выбирают из группы, состоящей из полиметилметакрилата, полистирола, сополимера стирола и малеинового ангидрида, полимера молочной кислоты, комбинаций полимера молочной кислоты с полистиролом и ацетатбутирата целлюлозы. 7. The composition according to paragraphs. 1-6, in which the polymer is selected from the group consisting of polymethyl methacrylate, polystyrene, a copolymer of styrene and maleic anhydride, a polymer of lactic acid, combinations of a polymer of lactic acid with polystyrene and cellulose acetate butyrate. 8. Состав по любому из пп. 1-7, дополнительно содержащий диспергатор, который предпочтительно выбирают из группы, состоящей из метилцеллюлозы, поливинилового спирта, лецитина. 8. The composition according to any one of paragraphs. 1-7, further containing a dispersant, which is preferably selected from the group consisting of methyl cellulose, polyvinyl alcohol, lecithin. 9. Способ доставки сельскохозяйственного химиката к растениям, включающий нанесение количества состава по любому из пп. 1-8 на растения таким образом, чтобы было внесено от около 1 г до около 10 кг сельскохозяйственного химиката на гектар. 9. A method for delivering an agricultural chemical to plants, comprising applying an amount of a composition according to any one of claims. 1-8 per plant so that about 1 g to about 10 kg of agricultural chemical per hectare is applied. 10. Способ доставки сельскохозяйственного химиката к растениям, включающий покрытие семян количеством состава по п. 1, так чтобы было нанесено от около 1 г до около 500 г сельскохозяйственного химиката на 100 кг семян. 10. A method of delivering an agricultural chemical to plants, comprising coating the seeds with an amount of a composition according to claim 1, so that from about 1 g to about 500 g of the agricultural chemical per 100 kg of seeds is applied. 11. Способ получения состава по любому из пп. 1-8, включающего микрочастицы для постепенного выделения сельскохозяйственного химиката, включающий стадии (а) растворения сельскохозяйственного химиката, выбранного из ципроконазола, эпоксиназола или тебуконазола и полимера в органическом растворителе с образованием гидрофобного раствора; (b) смешивания гидрофобного раствора и водной среды со скоростью сдвига и в течение периода времени, достаточных для получения эмульсии, имеющей диспергированные в водной среде капельки гидрофобного раствора; (с) выпаривания из эмульсии органического растворителя с получением множества микрочастиц, имеющих средний диаметр от 0,2 до 200 мкм и включающих сельскохозяйственный химикат, распределенный в полимерной матрице. 11. A method of obtaining a composition according to any one of paragraphs. 1-8, comprising microparticles for the gradual isolation of an agricultural chemical, comprising the steps of (a) dissolving an agricultural chemical selected from cyproconazole, epoxinazole or tebuconazole and a polymer in an organic solvent to form a hydrophobic solution; (b) mixing the hydrophobic solution and the aqueous medium at a shear rate and for a period of time sufficient to obtain an emulsion having droplets of the hydrophobic solution dispersed in the aqueous medium; (c) evaporating from the emulsion an organic solvent to obtain a plurality of microparticles having an average diameter of from 0.2 to 200 microns and including an agricultural chemical distributed in a polymer matrix. 12. Способ по п. 11, включающий растворение сельскохозяйственного химиката с тем, чтобы микрочастицы включали от 15 до 50% по весу сельскохозяйственного химиката. 12. The method according to claim 11, comprising dissolving the agricultural chemical so that the microparticles comprise from 15 to 50% by weight of the agricultural chemical.
RU2000102350/04A 1997-06-30 1998-06-26 Composition with controlled gradual isolation of active ingredient for delivering agricultural chemical to plants, methods for its delivery to plants and method for obtaining this composition RU2203547C2 (en)

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US5128597P 1997-06-30 1997-06-30
US60/051,285 1997-06-30
US09/104,565 1998-06-25

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RU2000102350A RU2000102350A (en) 2001-10-27
RU2203547C2 true RU2203547C2 (en) 2003-05-10

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3943470A1 (en) 2020-07-20 2022-01-26 Hybrid Innovation GmbH Composition for soil improvement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3943470A1 (en) 2020-07-20 2022-01-26 Hybrid Innovation GmbH Composition for soil improvement

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BR9803712A (en) 1999-12-21
ZA985674B (en) 1999-01-13
BR9803712B1 (en) 2014-04-01

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