WO2009086739A1 - 溴虫腈水可溶性粒剂及其制备方法 - Google Patents

溴虫腈水可溶性粒剂及其制备方法 Download PDF

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WO2009086739A1
WO2009086739A1 PCT/CN2008/070059 CN2008070059W WO2009086739A1 WO 2009086739 A1 WO2009086739 A1 WO 2009086739A1 CN 2008070059 W CN2008070059 W CN 2008070059W WO 2009086739 A1 WO2009086739 A1 WO 2009086739A1
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chlorfenapyr
water
soluble granule
group
span
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PCT/CN2008/070059
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English (en)
French (fr)
Inventor
Guishu Luan
Zhixiang Wang
Yunying Chi
Haixu Li
Changchun Liu
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Guishu Luan
Zhixiang Wang
Yunying Chi
Haixu Li
Changchun Liu
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Application filed by Guishu Luan, Zhixiang Wang, Yunying Chi, Haixu Li, Changchun Liu filed Critical Guishu Luan
Priority to PCT/CN2008/070059 priority Critical patent/WO2009086739A1/zh
Priority to CNA2008800000748A priority patent/CN101568256A/zh
Publication of WO2009086739A1 publication Critical patent/WO2009086739A1/zh

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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION 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
    • A01N43/00Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/34Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom
    • A01N43/36Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom five-membered rings

Definitions

  • the present invention relates to a novel dosage form of the insecticide, and more particularly to a water-soluble granule containing chlorfenapyr and a process for the preparation thereof. Background technique
  • Bipropiononitrile is a pyrrole insecticide and acaricide developed by American Cyanamide Company. Its chemical name is 4-bromo-2-(4-chlorophenyl)-1-ethoxymethyl-5-trifluoromethylpyrrole. 3-nitrile, also known as depletion, insect nitrile, pyrrolamine, AC303630, etc.
  • the drug has the functions of contact and stomach toxicity, and its action mechanism is unique. It has a long-lasting effect and has good control effect on various pests and pests on vegetables, cotton, fruits, soybeans, etc., and has low toxicity to humans and animals. Years of field efficacy tests have proven that chlorfenapyr is a good variety with popularized application value and development prospects.
  • Water emulsion (EW), microemulsion (ME), aqueous suspension (SC), water-soluble liquid (SL), etc. are representative new forms of water-based preparations.
  • the common feature is that water replaces a large amount of organic solvents and reduces solvents. Waste and pollution, reduce the toxicity of the preparation, improve safety, is a new dosage form to replace emulsifiable concentrate. 2.
  • the solid preparation is granulated.
  • the powder preparation is granulated to avoid dust pollution, and packaging is also the direction of dosage form research.
  • Water dispersible granules (WDG) are representative granules.
  • the dosage form has a granular appearance and is rapidly disintegrated and dispersed in water when used, thereby forming a highly suspended dispersion system for use in spray application.
  • the preparation content and suspension rate are much higher than wettable granules, good fluidity, no dust pollution, convenient packaging, storage and transportation. It is a new dosage form integrating the advantages of wettable powder, suspoemulsion and granules. However, these dosage forms do not combine the advantages of both, but also manifest. Summary of the invention
  • the object of the present invention is to overcome the disadvantages of the prior art described above and to provide a substitute for a large amount of organic solvent with water. It reduces the waste and pollution of the solvent, reduces the toxicity of the preparation, improves the safety, and has a granular appearance.
  • the water-soluble granules (WSG) containing chlorfenapyr and the preparation method thereof are rapidly disintegrated and dispersed in water when used.
  • a water-soluble granule of chlorfenapyr mainly made up of the following weight percentages:
  • Emulsifier 1 ⁇ 30%
  • Dispersing agent 1 ⁇ 10%
  • wetting agent 1 ⁇ 5 %
  • Binder 2 ⁇ 4% ;
  • Stabilizer 1 ⁇ 3 %
  • the balance is a filler.
  • the chlorfenapyr water-soluble granule of the present invention wherein the emulsifier is selected from the group consisting of alkylphenol ethoxylates, benzylphenol ethoxylates and the like, fatty alcohol ethoxylates and the like or sorbitol fatty acids One or a mixture of esters and their ethylene oxide adducts.
  • the chlorfenapyr water-soluble granule of the present invention wherein the dispersing agent is selected from the group consisting of alkylnaphthalene sulfonate, bisnaphthalenesulfonate formaldehyde condensate or sodium lignosulfonate.
  • the alkylnaphthalenesulfonate may be a pull-off powder BX, a pull-up powder AC or the like; and the bisnaphthalenesulfonate formaldehyde condensate may be a dispersant N, a dispersant NN0 or the like.
  • the chlorfenapyr water-soluble granule of the present invention wherein the wetting agent is selected from the group consisting of alkyl benzene sulfonate, fatty amide N-methyl sulfonate, alkyl aryl oxyethylene ether sulfate or Two mixtures.
  • the chlorfenapyr water-soluble granule of the present invention wherein the binder is one or a mixture of two selected from the group consisting of ⁇ -cyclodextrin, polyvinyl alcohol, and methyl cellulose.
  • the chlorfenapyr water-soluble granule of the present invention wherein the stabilizer is selected from the group consisting of sodium benzoate and glucose.
  • the chlorfenapyr water-soluble granule of the present invention wherein the filler is selected from the group consisting of hydrogencarbonate, anhydrous citric acid, maltose, and anhydrous One or two mixtures of sodium sulfate.
  • the preparation method of the chlorfenapyr water-soluble granule of the invention is as follows: the substance is homogenized, kneaded and extruded granulated according to the ratio, dried under vacuum at 65 to 75 ° C for 1 to 2 hours, sieved, sieved The product is packaged after testing; the product that cannot pass through the sieve repeats the above steps.
  • the specific preparation method comprises the following steps:
  • the water-soluble granules of the invention meet the requirements of the current development trend of pesticides by replacing the organic solvents such as xylene, methanol and toluene with the aqueous solvent, the solid granulation or tableting of the drug form, the high content of the pesticide and the functionalization.
  • the adhesive is embedded in the original drug and the stability and anti-oxidation effect of the stabilizer, so that the anti-radiation and illumination ability of the original drug is improved, and the shelf life of the drug is prolonged; the bicarbonate and citric acid in the filler can effervescent The role of the agent to promote the dissolution of the granules.
  • the water-soluble granule of the invention can be quickly dissolved in water, has high dispersing rate, has no floating and sinking phenomenon, has a large amount of organic solvent replaced by water, reduces solvent waste and pollution, reduces preparation toxicity, improves safety, and has appearance as granules. It has the characteristics of rapid disintegration and dispersion in water, convenient transportation and storage, and long shelf life.
  • the preparation method is simple, easy to operate and control.
  • the invention contains no or only a small amount of toxic and flammable aromatic hydrocarbon solvents, thereby avoiding flammable and explosive phenomena during production, storage and transportation.
  • This dosage form has no unpleasant toxic odor, is less irritating to the eyes, reduces environmental pollution, and greatly improves the safety of production, storage, transportation and users. Therefore, after industrialization, not only the economic benefits are obvious, but also the development of high-tech green pesticide technology is promoted. It has obvious social benefits for promoting environmental protection and is the research direction of sustainable development. detailed description
  • ⁇ -cyclodextrin 1%
  • Dispersing agent ⁇ 4%;
  • nonylphenol ethoxylate is thermally dissolved, it is mixed with the dispersing agent NO, sodium benzoate, sodium hydrogencarbonate, anhydrous citric acid and the composite parent drug at a temperature of 45 ° C, and then at a pressure of 6 kg / cm 2 Stirring and kneading uniformly to obtain a bolus;
  • the columnar particles are vacuum dried at 70 ° C for 1 hour, and then sieved.
  • the sieved product is packaged after testing; the product that cannot pass through the sieve is repeated after the above process is tested and qualified.
  • the preparation process is the same as in Example 1.
  • the raw material formula used is:
  • Methyl cellulose 2%; Sodium benzoate: 1%;
  • Anhydrous citric acid 35%.
  • This preparation used 46g per acre to control the cruciferous vegetable pest beet armyworm and diamondback moth, and the control effect was good.
  • the control effect is shown in Table 2:
  • the preparation process is the same as in Example 1.
  • the raw material formula used is:
  • Dispersant N 4%;
  • Alkyl aryl polyoxyethylene ether sulfate 4%;
  • Polyvinyl alcohol 2%;
  • Anhydrous citric acid 20%.
  • This preparation used 14g per acre to control the cruciferous vegetable pest beet armyworm, Plutella xylostella, and the control effect was good.
  • the control effect is shown in Table 3:
  • Example 4 The preparation process is the same as in Example 1, and the raw material formula used is:
  • Sorbitol fatty acid ester 12%;
  • Polyvinyl alcohol 2%;
  • Anhydrous citric acid 12%.
  • This preparation used 9g per acre to control the cruciferous vegetable pest beet armyworm, Plutella xylostella, and the control effect was good.
  • the control effect is shown in Table 4:
  • the invention contains no or only a small amount of toxic and flammable aromatic hydrocarbon solvents, thereby avoiding flammable and explosive phenomena during production, storage and transportation.
  • This dosage form has no unpleasant toxic odor, is less irritating to the eyes, reduces environmental pollution, and greatly improves the safety of production, storage, transportation and users. Therefore, after industrialization, not only the economic benefits are obvious, but also the development of high-tech green pesticide technology is promoted. It has obvious social benefits for promoting environmental protection and is the research direction of sustainable development. Notes on the application documents: Unless otherwise stated, the percentages referred to in this application are percentages by weight.

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  • Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Pest Control & Pesticides (AREA)
  • Plant Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
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  • Environmental Sciences (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Description

溴虫腈水可溶性粒剂及其制备方法 技术领域
本发明涉及一种新剂型的杀虫剂, 尤其涉及一种含有溴虫腈的水可溶性粒剂及其制备方 法。 背景技术
随着人们对环境保护意识的提高, 以及各国政府对生态环境的重视, 人们对适合防治作 物病虫害和无公害生产需要的高效、 低毒、 低残留、 无污染的环保型生物农药和化学农药的 需求越来越大。
溴虫腈是美国氰胺公司开发的吡咯类杀虫杀螨剂, 化学名称为 4-溴 -2- (4-氯苯基 ) -1-乙 氧基甲基 -5-三氟甲基吡咯 -3-腈, 又名除尽、 虫螨腈、 吡咯胺、 AC303630等。 该药具有触杀、 胃毒作用, 其作用机制独特, 持效期长, 对蔬菜、 棉花、 水果、 大豆等作物上的多种害虫、 害螨有较好的防效, 对人畜毒性低, 经过多年的田间药效试验证明, 溴虫腈是具有推广应用 价值和发展前景的好品种。
植物保护用的杀虫剂的种类很多, 各国目前使用最多的剂型是乳油、 悬浮剂、 可湿性粉 剂、 粉剂、 粒剂、 水剂、 毒饵、 母液、 母粉等十余种剂型。 众所周知, 乳油中含有大量有机 溶剂, 易于挥发着火、 对人体和植物有毒害, 污染环境, 运输也不方便; 可湿性粉剂在生产、 使用中有大量粉尘, 污染环境, 影响操作人员的健康。 现阶段农药剂型的发展动向主要是提 倡开发环保型新剂型,如: 1.液态制剂趋向水性化。水乳剂 (EW)、微乳剂 (ME),水悬剂(SC)、 水可溶性液剂 (SL) 等是具代表性的水性化新剂型, 其共同特点是以水代替大量有机溶剂, 减少溶剂的浪费和污染, 降低制剂毒性, 提高安全性, 是取代乳油的新剂型。 2. 固态制剂粒 状化。将粉状制剂粒状化,避免粉尘污染,便于包装也是剂型研究的方向。水分散性粒剂(WDG) 是具代表性的粒状剂。 该剂型, 外观为颗粒状, 使用时投入水中迅速崩解分散, 形成高悬浮 的分散体系, 以利喷雾使用。 制剂含量及悬浮率都大大超过可湿性粒剂, 流动性好, 无粉尘 污染, 包装、 贮运方便, 是集可湿性粉剂、 悬乳剂、 颗粒剂的优点为一体的新剂型。 但是这 些剂型都没有将两者的优势结合起来, 同时体现。 发明内容
本发明的目的就是为了克服上述现有技术存在的缺点,提供一种以水代替大量有机溶剂, 减少溶剂的浪费和污染, 降低制剂毒性, 提高安全性, 外观为颗粒状, 使用时投入水中迅速 崩解分散的含有溴虫腈的水可溶性粒剂 (WSG) 及其制备方法。
为解决上述技术问题, 本发明通过以下技术方案实现的:
一种溴虫腈水可溶性粒剂, 主要由如下重量百分比的物质制成:
溴虫腈: 0. 5〜50 %;
乳化剂: 1〜30 %;
分散剂: 1〜10 %;
润湿剂: 1〜5 %;
粘结剂: 2〜4 % ;
稳定剂: 1〜3 %;
余量是填料。
本发明溴虫腈水可溶性粒剂, 其中所述乳化剂选自烷基酚聚氧乙烯醚、 苄基酚聚氧乙烯 醚及类似物、 脂肪醇聚氧乙烯醚及类似物或者山梨醇脂肪酸酯及其环氧乙烷加成物中的一种 或两种混合物。
所述烷基酚聚氧乙烯醚可以为壬基酚聚氧乙烯醚、 辛基酚聚氧乙烯醚等; 所述苄基酚聚 氧乙烯醚及类似物可以为苄基酚聚氧乙烯醚、 苄基烷基酚聚氧乙烯醚等; 所述脂肪醇聚氧乙 烯醚及类似物可以为以月桂醇为主成分的产品 CnH2n+10 (E0) mH, 其中 n=12〜16, m=15〜30; 所 述山梨醇脂肪酸酯及其环氧乙烷加成物可以为 Span-20、 Span-40、 Span-60、 Span-65、 Span-80、 Span-85或 Tween20、 Tween21 Tween40、 Tween60、 Tween61、 Tween65、 Tween80、 Tween81 Tween85等。
本发明溴虫腈水可溶性粒剂, 其中所述分散剂选自烷基萘磺酸盐、 双萘磺酸盐甲醛缩合 物或木质素磺酸钠。
所述烷基萘磺酸盐可以为拉开粉 BX、 拉开粉 AC等; 所述双萘磺酸盐甲醛缩合物可以为 分散剂 N、 分散剂 NN0等。
本发明溴虫腈水可溶性粒剂, 其中所述润湿剂选自烷基苯磺酸盐、 脂肪酰胺 N-甲基磺酸 盐、 烷基芳基聚氧乙烯醚硫酸盐中的一种或两种混合物。
本发明溴虫腈水可溶性粒剂, 其中所述粘结剂选自 β _环糊精、聚乙烯醇、 甲基纤维素中 的一种或两种混合物。
本发明溴虫腈水可溶性粒剂, 其中所述稳定剂选自苯甲酸钠、 葡萄糖中的一种。
本发明溴虫腈水可溶性粒剂, 其中所述填料选自碳酸氢盐、 无水柠檬酸、 麦芽糖、 无水 硫酸钠中的一种或两种混合物。
本发明溴虫腈水可溶性粒剂的制备方法为: 将所述物质按照比例进行均质、 捏合和挤压 造粒, 65〜75°C下真空干燥 1〜2小时后筛分, 过筛的产品经检测后包装; 过不了筛的产品重 复以上步骤即成。
其具体的制备方法包括以下步骤:
①均质: 将溴虫腈原药与粘结剂、 润湿剂混合于 50〜60°C水中, 在 420〜450公斤 /厘米 2高压下搅拌均质;
②将均质后的上述液体混合物进行喷雾干燥, 制成复合母药;
③捏合: 将乳化剂热溶解后, 与分散剂、 稳定剂、 填料和复合母药在 45〜50°C温度下热 混合, 再在 4〜6公斤 /厘米 2压力下搅拌、 捏合均匀, 得到团剂;
④挤压造粒: 将团剂在 6〜 12公斤 /厘米 2压力下挤制成柱状颗粒;
⑤将柱状颗粒在 70°C下真空干燥 1小时后筛分整形即成。
本发明的水可溶性粒剂符合当前农药发展趋势中的以水溶剂代替二甲苯、 甲醇、 甲苯等 有机溶剂、 药形固体颗粒化或片剂化、 农药高含量化及功能化四个要求, 其中粘结剂的包埋 原药作用和稳定剂的稳定和抗氧化作用, 使原药抗幅射和光照能力提高, 延长了药品保质期; 填料中的碳酸氢盐和柠檬酸, 可以起到泡腾剂的作用, 促进粒剂溶解。 本发明的水可溶性粒 剂可在水中快速溶解, 分散率高, 无上浮和下沉现象, 具有以水代替大量有机溶剂, 减少溶 剂的浪费和污染, 降低制剂毒性, 提高安全性, 外观为颗粒状, 使用时投入水中迅速崩解分 散, 运输及保管方便、 保质期长的特点, 其制备方法简单、 易于操作和控制。
本发明与现有主流杀虫剂剂型相比, 不含或只含少量有毒、 易燃的芳烃类溶剂, 因而可 以避免生产和贮运过程中的易燃易爆现象。 本剂型没有难闻有毒的气味, 对眼睛剌激性小, 减少了对环境的污染, 大大提高了对生产、 贮运和使用者的安全性。 因此形成产业化后, 不 仅经济效益明显, 而且有利于推动高新绿色农药技术的发展, 对推动环境保护, 具有明显的 社会效益, 是可持续发展的研究方向。 具体实施方式
下面结合实施例, 对本发明作进一步说明:
实施例 1
溴虫腈水可溶性粒剂的制备过程:
①备料: 按以下配方准备好原料: 溴虫腈: 1%;
壬基酚聚氧乙烯醚: 3%;
β -环糊精: 1%;
十二烷基苯磺酸钠: 5%;
分散剂 ΝΟ: 4%;
苯甲酸钠: 1%;
碳酸氢钠: 47%;
无水柠檬酸: 38%;
②将溴虫腈原药与 β -环糊精、十二烷基苯磺酸钠混合于 55 °C水中,在 420公斤 /厘米 2高压下 搅拌均质, 将均质后的上述液体混合物进行喷雾干燥, 制成复合母药;
③将壬基酚聚氧乙烯醚热溶解后, 与分散剂 NO、 苯甲酸钠、 碳酸氢钠、 无水柠檬酸和复合 母药在 45 °C温度下热混合, 再在 6公斤 /厘米 2压力下搅拌、 捏合均匀, 得到团剂;
④将团剂在 8公斤 /厘米 2压力下挤制成柱状颗粒;
⑤将柱状颗粒在 70°C下真空干燥 1小时后筛分, 过筛的产品经检测后包装; 过不了筛的产品 再重复以上过程后经检测合格包装即成。
将以上制剂, 每亩使用 460g对十字花科蔬菜害虫甜菜夜蛾、 小菜蛾进行防治试验, 防效 良好, 防治效果见表 1 :
表 1
Figure imgf000005_0001
实施例 2
制备过程同实施例 1, 所用原料配方为:
溴虫腈: 10%;
辛基酚聚氧乙烯醚: 6%;
苄基酚聚氧乙烯醚: 1%;
木质素磺酸钠: 3%;
脂肪酰胺 N-甲基磺酸盐: 5%;
甲基纤维素: 2%; 苯甲酸钠: 1%;
碳酸氢钠: 37%;
无水柠檬酸: 35%。
将此制剂每亩使用 46g对十字花科蔬菜害虫甜菜夜蛾、小菜蛾进行防治试验, 防效良好, 防治效果见表 2:
表 2
Figure imgf000006_0001
实施例 3
制备过程同实施例 1, 所用原料配方为:
溴虫腈: 30%;
辛基酚聚氧乙烯醚: 10%;
脂肪醇聚氧乙烯醚: 2%;
分散剂 N: 4%;
烷基芳基聚氧乙烯醚硫酸盐: 4%;
聚乙烯醇: 2%;
葡萄糖: 1%;
无水硫酸钠: 27%;
无水柠檬酸: 20%。
将此制剂, 每亩使用 14g对十字花科蔬菜害虫甜菜夜蛾、 小菜蛾进行防治试验, 防效良 好, 防治效果见表 3 :
表 3
Figure imgf000006_0002
实施例 4 制备过程同实施例 1, 所用原料配方为:
溴虫腈: 50%;
山梨醇脂肪酸酯: 12%;
拉开粉 AC: 3%;
拉开粉 BX: 1%;
十二烷基萘磺酸钠: 4%;
聚乙烯醇: 2%;
葡萄糖: 1%;
麦芽糖: 15%;
无水柠檬酸: 12%。
将此制剂每亩使用 9g对十字花科蔬菜害虫甜菜夜蛾、 小菜蛾进行防治试验, 防效良好, 防治效果见表 4:
表 4
Figure imgf000007_0001
工业实用性
本发明与现有主流杀虫剂剂型相比, 不含或只含少量有毒、 易燃的芳烃类溶剂, 因而可 以避免生产和贮运过程中的易燃易爆现象。 本剂型没有难闻有毒的气味, 对眼睛剌激性小, 减少了对环境的污染, 大大提高了对生产、 贮运和使用者的安全性。 因此形成产业化后, 不 仅经济效益明显, 而且有利于推动高新绿色农药技术的发展, 对推动环境保护, 具有明显的 社会效益, 是可持续发展的研究方向。 对申请文件的说明: 除另有说明外, 本申请文件中涉及的百分比均为重量百分比。

Claims

权 利 要 求
1.一种溴虫腈水可溶性粒剂, 其特征在于: 主要由如下重量百分比的物质制成: 溴虫腈: 0. 5〜50 %;
乳化剂: 1〜30 %;
分散剂: 1〜10 %;
润湿剂: 1〜5 %;
粘结剂: 2〜4 % ;
稳定剂: 1〜3 %;
余量是填料。
2.如权利要求 1所述的溴虫腈水可溶性粒剂, 其特征在于所述乳化剂选自烷基酚聚氧乙 烯醚、 苄基酚聚氧乙烯醚及类似物、 脂肪醇聚氧乙烯醚及类似物或者山梨醇脂肪酸酯及其环 氧乙烷加成物中的一种或两种混合物。
3. 如权利要求 2所述的溴虫腈水可溶性粒剂,其特征在于所述烷基酚聚氧乙烯醚为壬基 酚聚氧乙烯醚、 辛基酚聚氧乙烯醚; 所述苄基酚聚氧乙烯醚及类似物为苄基酚聚氧乙烯醚、 苄基烷基酚聚氧乙烯醚; 所述脂肪醇聚氧乙烯醚及类似物为以月桂醇为主成分的产品 CnH2n+10 (E0) mH,其中 n=12〜16,m=15〜30;所述山梨醇脂肪酸酯及其环氧乙烷加成物为 Span-20、 Span-40、 Span-60、 Span-65、 Span-80、 Span-85或 Tween20、 Tween21、 Tween40、 Tween60、 Tween61 Tween65 Tween80 Tween81 Tween85。
4. 如权利要求 1 所述的溴虫腈水可溶性粒剂, 其特征在于所述分散剂选自烷基萘磺酸 盐、 双萘磺酸盐甲醛缩合物或木质素磺酸钠。
5. 如权利要求 4 所述的溴虫腈水可溶性粒剂, 其特征在于所述烷基萘磺酸盐为拉开粉 BX、 拉开粉 AC; 所述双萘磺酸盐甲醛缩合物为分散剂^ 分散剂 NN0。
6. 如权利要求 1〜5任一项所述的溴虫腈水可溶性粒剂, 其特征在于所述润湿剂选自烷 基苯磺酸盐、 脂肪酰胺 N-甲基磺酸盐、 烷基芳基聚氧乙烯醚硫酸盐中的一种或两种混合物。
7. 如权利要求 6所述的溴虫腈水可溶性粒剂, 其特征在于所述粘结剂选自 β _环糊精、 聚乙烯醇、 甲基纤维素中的一种或两种混合物。
8. 如权利要求 7所述的溴虫腈水可溶性粒剂, 其特征在于所述稳定剂选自苯甲酸钠、 葡 萄糖中的一种。
9. 如权利要求 8所述的溴虫腈水可溶性粒剂, 其特征在于所述填料选自碳酸氢盐、无水 柠檬酸、 麦芽糖、 无水硫酸钠中的一种或两种混合物。
10. 一种溴虫腈水可溶性粒剂的制备方法, 其特征在于: 将所述物质按照比例进行均质、 捏合和挤压造粒, 65〜75°C下真空干燥 1〜2小时后筛分, 过筛的产品经检测后包装; 过不了 筛的产品重复以上步骤即成。
11. 根据权利要求 10所述的溴虫腈水可溶性粒剂的制备方法, 其特征在于: 包括以下步 骤:
①均质: 将溴虫腈原药与粘结剂、 润湿剂混合于 50〜60°C水中, 在 420〜450公斤 /厘米 2高压下搅拌均质;
②将均质后的上述液体混合物进行喷雾干燥, 制成复合母药;
③捏合: 将乳化剂热溶解后, 与分散剂、 稳定剂、 填料和复合母药在 45〜50°C温度下热 混合, 再在 4〜6公斤 /厘米 2压力下搅拌、 捏合均匀, 得到团剂;
④挤压造粒: 将团剂在 6〜 12公斤 /厘米 2压力下挤制成柱状颗粒;
⑤将柱状颗粒在 70°C下真空干燥 1小时后筛分整形即成。
PCT/CN2008/070059 2008-01-09 2008-01-09 溴虫腈水可溶性粒剂及其制备方法 WO2009086739A1 (zh)

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