WO2004077948A1 - Oil/Water液中乾燥法による農薬マイクロカプセル製剤及びその製造方法 - Google Patents
Oil/Water液中乾燥法による農薬マイクロカプセル製剤及びその製造方法 Download PDFInfo
- Publication number
- WO2004077948A1 WO2004077948A1 PCT/JP2003/016351 JP0316351W WO2004077948A1 WO 2004077948 A1 WO2004077948 A1 WO 2004077948A1 JP 0316351 W JP0316351 W JP 0316351W WO 2004077948 A1 WO2004077948 A1 WO 2004077948A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- water
- solvent
- polylactic acid
- active ingredient
- agricultural
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/26—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests in coated particulate form
- A01N25/28—Microcapsules or nanocapsules
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
- B01J13/02—Making microcapsules or microballoons
Definitions
- the present invention relates to a microcapsule preparation of an agrochemical active ingredient, in particular, a cyclohexanedione herbicide or an azole bactericide, and a method for producing the same.
- Non-Patent Document 1 Many methods are already known for microencapsulation techniques for pharmaceuticals, pesticides, and the like. (See, for example, Non-Patent Document 1).
- Patent Document 1 See Patent Document 1 and Patent Document 2
- microcapsule preparations which has a high production efficiency of the hexoxanedione herbicide or lysole fungicide and has a high concentration of the pesticide active ingredient in the microcapsule preparation.
- Non-Patent Document 1 “Basic Granulation and Engineering of Granulation”, “Granulation Handbook” (1991), edited by Japan Powder Industry Technical Association, Ohmsha Co., Ltd., 60-64 pages Patent Document 1: See Japanese Patent Application Laid-Open No. 6-65-064
- Patent Document 2 Japanese Unexamined Patent Application Publication No. 2000-30013 Disclosure of the Invention
- An object of the present invention is to provide a microcapsule preparation in which a large amount of a pesticidal active ingredient is incorporated into microcapsules and which can be easily produced, and a method for producing the same.
- the present invention relates to a method for producing a microforce capsule comprising the following steps, and a microcapsule preparation obtained by the method.
- the method of the present invention can be applied to a method wherein the pesticidal active ingredient is a cyclohexanedione herbicide or an azole fungicide; particularly, cyclohexandione herbicide is setoxydim; and azole is a triflumizole.
- a biodegradable polymer such as polyepsilon force prolactam, polylactic acid, or a copolymer of polylactic acid and glycolic acid may be used as the film-forming polymer.
- acetic acid Use ethyl BEST MODE FOR CARRYING OUT THE INVENTION
- the pesticidal active ingredient which can be used in the present invention is a solid pesticide having a high solubility in a non-polar solvent or a pesticide which is liquid at ordinary temperature and which is hardly soluble in water, preferably having a solubility in water of 10,000 ppm or less.
- a solid pesticide having a high solubility in a non-polar solvent or a pesticide which is liquid at ordinary temperature and which is hardly soluble in water, preferably having a solubility in water of 10,000 ppm or less.
- two or more kinds may be used in combination.
- azole fungicides such as triflum izole, and xanthone dichloride such as setoxy dim
- herbicides, etc. and it is also possible to use one kind or a mixture of two or more kinds.
- water-insoluble solvent used in the present invention examples include hexane, chloroform, dichloromethane, dichloroethane, isooctane, octane, nonane, ethynole acetate, and tonolen, and one or more of these are used. They can be used in combination.
- the film-forming polymer used in the present invention is a substance encapsulating the pesticidal active ingredient, and a styrene-divinylbenzene copolymer, polyepsilon-based prolatatam, polylactic acid, a copolymer of polylactic acid and glycolic acid, and a molecular weight and a structure.
- the high oil-absorbing ability, inorganic substance or organic substance that can be used in the present invention is not particularly limited as long as it can be impregnated with a liquid pesticidal active ingredient.
- inorganic substances include silicon dioxide, bentonite, activated carbon, and silica gel. Examples include starch, cell ⁇ -source, and the like, and one or a mixture of two or more of these may be used.
- the emulsifying and dispersing agent for the solvent that can be used in the present invention is not particularly limited as long as the solvent in which the agricultural chemical active ingredient and the film-forming polymer are dissolved can be emulsified and dispersed, and is added to a water-insoluble solvent or water. Can be.
- Tween surfactants such as tri- or distyryl ether added with polyoxyethylene, alcohol ether added with boroxoxyethylene, sorbitan oleate added with polyoxyethylene, and sorbitan oleate
- Spun surfactants such as ethate, sodium alkylnaphthalenesulfonate, sodium lauryl sulfate, sodium dodecyl sulfate, sodium V-guanine sulfonate, formaldehyde condensate of sodium alkylnaphthalenesulfonate, formaldehyde condensate of sodium phenolsulfonate,
- Polyglycenol condensed ricino such as copolymers of isobutylene-maleic anhydride and sodium polycarboxylate, sodium alkylnaphthalenesulfonate and sodium alkylbenzenesulfonate
- Organic substances such as phosphates, monola decaglycerin
- a silicon-based surfactant in order to reduce foaming during the production of microcapsule preparations, a silicon-based surfactant, a sodium salt or a calcium salt or a mixture of higher fatty acids, an acetylene-based surfactant, or the like is added. You can also.
- the amount of each component used in the production of the microcapsule preparation of the present invention varies depending on the kind of the pesticidal active ingredient.
- the amount of the pesticidal active ingredient is 0.01 to 60% by weight based on the final preparation amount. , preferably 0. 0 1-4 0% by weight, 0 the film-forming polymers for enveloping the agrochemical active ingredient. 0 0 5-8 0 weight 0/0, preferably 0. 0 0 5-5 0% by weight
- the solvent for dissolving the pesticidal active ingredient and the film-forming polymer is 0.05 to 80% by weight, preferably 0.01 to 50% by weight, and an inorganic or organic substance having oil absorbing ability.
- emulsifying / dispersing surfactant is 0 to 30% by weight, preferably 0 to 20% by weight, and defoamer is 0 to 10%.
- % Preferably 0 to 5% by weight.
- a mixture of two or more kinds of film-forming polymers is dissolved in a solvent that is incompatible with water, and if necessary, impregnated with an oil-absorbing inorganic or organic substance (first step)
- Agrochemical active ingredient Emulsify and disperse the solvent in which the polymer and the polymer are dissolved, or the impregnated material thereof in water using a homomixer or homogenizer as fine particles (second step), emulsify in the solution and heat the solvent in the emulsified particles dispersed.
- the ethyl acetate is completely evaporated by drying under reduced pressure for 3 hours with g, and encapsulation of sethoxydim with polyepsilon force prolactam. From the suspension, only the solid component was taken out by decantation to produce a microphone-mouth capsule preparation having a sethoxydim content of about 20%.
- composition of this micro force capsule is 5 g of sethoxydim, 20 g of polylactic acid, It is 1 g of deglycerol dephosphoric acid and the content of sethoxydim is about 20%.
- Example 2 The composition of this micro force capsule is 5 g of sethoxydim, 20 g of polylactic acid, It is 1 g of deglycerol dephosphoric acid and the content of sethoxydim is about 20%.
- an aqueous phase is prepared by dissolving 4 g of polybutyl alcohol and 1 g of deglycolic acid monolaurate in 500 g of water. Add the organic phase to the aqueous phase, emulsify with a homogenizer for 5 minutes (liquid temperature 40 ° C, homogenizer rotation speed 500 rpm), set the homogenizer rotation speed to 5000 rpm, and dry under reduced pressure at 40 ° C and 700 mmHg for 5 hours.
- the triflumizole is encapsulated in polyepsilon force prolatam. From the suspension, only the solid component was taken out by decantation to produce a microforce capsule having a triflumizole content of about 12%.
- the composition of this micro force capsule is 3 g of triflumizole, 20 g of polyepsin mouth caprolatum, 1 g of polyglyceryl condensed ricinoleate, and the content of triflumizole is about 12%.
- Emulsified for 5 minutes in a homogenizer organic phase was added to the aqueous phase (solution temperature 40 ° C, homogenizer speed 5 00 rpm), homogenizer
- the scratch rotational speed in the 5000 r pm 40 ° C, 700 mmH g for 5 hours under reduced pressure Drying completely evaporates the ethyl acetate and encapsulates the trifmin with polyepsilon force prolactam. Only the solid component was removed from this suspension by decantation to produce a micro-forced capsule having a trifmin content of about 20%.
- composition of this microforce capsule is 10 g of triflumizole, 40 g of polyepsiloncaprolactam, and 1 g of polyglyceryl-condensed ricinoleate, and the content of triflumizole is about 20%.
- the organic phase was added to the aqueous phase, and the mixture was emulsified with a homogenizer for 5 minutes (liquid temperature: 40 ° C, homogenizer rotation speed: 500 rpm), and the homogenizer rotation speed was set to 500 rpm to 40 ° C, 700 mmH.
- the dichloroethane is completely evaporated by drying under reduced pressure for 3 hours at g, and triflumizole is encapsulated with polylactic acid. From the suspension, only the solid component was removed by decantation to produce a microforce capsule having a triflumizole content of about 30%.
- composition of this micro force capsule is 10 g of triflumizole, 20 g of polylactic acid, 3 g of POE tristyrylphenyl ether, and the triflumizole content is about 30%.
- composition of this micro force capsule is 5 g of sethoxydim, 20 g of polylactic acid, and 1 g of deglycerol monophosphate, resulting in a cetoxydim content of about 20%.
- an aqueous phase is produced by dissolving 4 g of polybutyl alcohol and 1 g of deglycolic acid monolaurate in 500 g of water.
- the organic phase was added to the aqueous phase, and the mixture was emulsified with a homogenizer for 5 minutes (liquid temperature: 40 ° C, homogenizer rotation speed: 500 rpm).
- the obtained suspension was spray-dried (Okawara Kakoki Co., Ltd. Drying temperature using mold) It was spray-dried at a temperature of 100 ° C. to produce a solid preparation in which triflumizole was made into a forcepsel with polyepsilon force prolactam.
- the composition of the Mike mouth capsule preparation is 3 g of triflumizole, 20 g of polypsin mouth prolactam, 1 g of polyglyceryl condensed ricinoleate, and the content of triflumizole is about 12%.
- the yield was calculated from the charged amount (A) when 100% was recovered in the production of microcapsule preparations and the amount (B) recovered in actual production.
- Test Example 2 Measurement of pesticide active ingredient content in micro force capsule
- a mixture of ligninsulfonic acid Na10 g, alkylnaphthalenesulfonic acid Na salt formaldehyde condensate 5 g, alkylnaphthalenesulfonic acid Na2 g2 and clay 73 g was milled with a jet mill to a powder diameter of about 7 microns.
- Manufactures wettable powder base A wettable powder is manufactured by mixing 10 g of the microencapsulated solid preparations produced in Examples and Comparative Examples with 90 g of a wettable powder base in a mortar. This wettable powder was diluted 100 fold with tap water and diluted physical properties (measurement items; self-dispersibility, initial dispersibility, suspension stability, foaming property) were measured.
- Suspension stability The amount of sedimentation (ml) after 30 inversions of the measuring cylinder.
- the concentration of the pesticide active ingredient in a microcapsule is high, and the microencapsulated preparation of the pesticide with good diluent properties can be efficiently produced.
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Toxicology (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Plant Pathology (AREA)
- Dispersion Chemistry (AREA)
- Agronomy & Crop Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004569117A JP4723864B2 (ja) | 2002-12-19 | 2003-12-19 | Oil/Water液中乾燥法による農薬マイクロカプセル製剤及びその製造方法 |
| AU2003289444A AU2003289444A1 (en) | 2002-12-19 | 2003-12-19 | Agricultural-chemical microcapsule preparation made by oil/water liquid drying and process for producing the same |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002367725 | 2002-12-19 | ||
| JP2002-367725 | 2002-12-19 | ||
| JP2002-367726 | 2002-12-19 | ||
| JP2002367726 | 2002-12-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2004077948A1 true WO2004077948A1 (ja) | 2004-09-16 |
Family
ID=32964543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2003/016351 Ceased WO2004077948A1 (ja) | 2002-12-19 | 2003-12-19 | Oil/Water液中乾燥法による農薬マイクロカプセル製剤及びその製造方法 |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4723864B2 (ja) |
| AU (1) | AU2003289444A1 (ja) |
| WO (1) | WO2004077948A1 (ja) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007186497A (ja) * | 2005-12-14 | 2007-07-26 | Sumitomo Chemical Co Ltd | 固体農薬活性化合物を含有するマイクロカプセル |
| CN101396018B (zh) * | 2008-09-05 | 2012-05-02 | 河北科技大学 | 除草剂稀禾定的脲醛树脂微胶囊剂及其制备方法 |
| US9060510B2 (en) | 2005-12-14 | 2015-06-23 | Sumitomo Chemical Company, Limited | Microencapsulated pesticide |
| CN110130111A (zh) * | 2019-04-28 | 2019-08-16 | 上海驰纺材料科技有限公司 | 一种全生物基抗紫外型驱蚊微胶囊及其制备方法 |
| JP2021533187A (ja) * | 2018-07-27 | 2021-12-02 | バイエル アクチェンゲゼルシャフトBayer Aktiengesellschaft | 農薬用の制御放出製剤 |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3960757A (en) * | 1973-06-27 | 1976-06-01 | Toyo Jozo Co., Ltd. | Process for encapsulation of medicaments |
| US4389330A (en) * | 1980-10-06 | 1983-06-21 | Stolle Research And Development Corporation | Microencapsulation process |
| WO1996010397A1 (en) * | 1994-09-30 | 1996-04-11 | Takeda Chemical Industries, Ltd. | Oral sustained-release preparation |
| WO1996039134A1 (en) * | 1995-06-05 | 1996-12-12 | Takeda Chemical Industries, Ltd. | Osteogenetic promoting pharmaceutical composition |
| US5665394A (en) * | 1994-02-21 | 1997-09-09 | Takeda Chemical Industries, Ltd. | Matrix for sustained-release preparation |
| JPH1025204A (ja) * | 1996-07-09 | 1998-01-27 | Nippon Soda Co Ltd | 種子消毒用農薬製剤 |
| JPH10203966A (ja) * | 1996-11-21 | 1998-08-04 | Takeda Chem Ind Ltd | 徐放性マイクロカプセルおよびその製造法 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08151322A (ja) * | 1994-09-30 | 1996-06-11 | Takeda Chem Ind Ltd | 経口徐放剤 |
| JP2992677B2 (ja) * | 1995-06-05 | 1999-12-20 | 武田薬品工業株式会社 | 骨形成促進医薬組成物 |
| DE19836673A1 (de) * | 1998-08-13 | 2000-02-17 | Hoechst Schering Agrevo Gmbh | Herbizide Mittel für tolerante oder resistente Zuckerrübenkulturen |
-
2003
- 2003-12-19 AU AU2003289444A patent/AU2003289444A1/en not_active Abandoned
- 2003-12-19 WO PCT/JP2003/016351 patent/WO2004077948A1/ja not_active Ceased
- 2003-12-19 JP JP2004569117A patent/JP4723864B2/ja not_active Expired - Lifetime
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3960757A (en) * | 1973-06-27 | 1976-06-01 | Toyo Jozo Co., Ltd. | Process for encapsulation of medicaments |
| US4389330A (en) * | 1980-10-06 | 1983-06-21 | Stolle Research And Development Corporation | Microencapsulation process |
| US5665394A (en) * | 1994-02-21 | 1997-09-09 | Takeda Chemical Industries, Ltd. | Matrix for sustained-release preparation |
| WO1996010397A1 (en) * | 1994-09-30 | 1996-04-11 | Takeda Chemical Industries, Ltd. | Oral sustained-release preparation |
| WO1996039134A1 (en) * | 1995-06-05 | 1996-12-12 | Takeda Chemical Industries, Ltd. | Osteogenetic promoting pharmaceutical composition |
| JPH1025204A (ja) * | 1996-07-09 | 1998-01-27 | Nippon Soda Co Ltd | 種子消毒用農薬製剤 |
| JPH10203966A (ja) * | 1996-11-21 | 1998-08-04 | Takeda Chem Ind Ltd | 徐放性マイクロカプセルおよびその製造法 |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007186497A (ja) * | 2005-12-14 | 2007-07-26 | Sumitomo Chemical Co Ltd | 固体農薬活性化合物を含有するマイクロカプセル |
| US9060510B2 (en) | 2005-12-14 | 2015-06-23 | Sumitomo Chemical Company, Limited | Microencapsulated pesticide |
| CN101396018B (zh) * | 2008-09-05 | 2012-05-02 | 河北科技大学 | 除草剂稀禾定的脲醛树脂微胶囊剂及其制备方法 |
| JP2021533187A (ja) * | 2018-07-27 | 2021-12-02 | バイエル アクチェンゲゼルシャフトBayer Aktiengesellschaft | 農薬用の制御放出製剤 |
| JP2024037963A (ja) * | 2018-07-27 | 2024-03-19 | バイエル アクチェンゲゼルシャフト | 農薬用の制御放出製剤 |
| CN110130111A (zh) * | 2019-04-28 | 2019-08-16 | 上海驰纺材料科技有限公司 | 一种全生物基抗紫外型驱蚊微胶囊及其制备方法 |
| CN110130111B (zh) * | 2019-04-28 | 2021-10-26 | 上海驰纺材料科技有限公司 | 一种全生物基抗紫外型驱蚊微胶囊及其制备方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2003289444A1 (en) | 2004-09-28 |
| JP4723864B2 (ja) | 2011-07-13 |
| JPWO2004077948A1 (ja) | 2006-06-08 |
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