宋玉泉 新杀虫剂研究进展
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聚羧酸盐分散剂在50%氟啶虫酰胺干悬浮剂中的应用本文将聚羧酸盐类分散剂应用于50%氟啶虫酰胺干悬浮剂配方的制备,探索了加工工艺路线以及配方组分,得到了最佳工艺路线为:先经过湿法粉碎再经过喷雾干燥完成造粒。
造粒条件为:喷雾干燥进风口温度:135℃,出风口温度为:72℃,进料流量:21.2mL/min,雾化器压力为:12×104kPa。
最佳配方配比为:氟啶虫酰胺50%,WS-03 3%,DF-89 8%,NN0 16%,硫酸钠6%,GYX-60 1%,高岭土补足至100%。
该制剂的各项性能指标均符合干悬浮剂加工要求。
标签:干悬浮剂;氟啶虫酰胺;聚羧酸盐分散剂;空心颗粒前言氟啶虫酰胺(flonicamid),化学名称为氰甲基-4-(三氟甲基)烟酰胺,是由日本石原产业株式会社开发的一种新型低毒吡啶酰胺类昆虫生长调节剂类杀虫剂[1-2]。
氟啶虫酰胺作用机理比较新颖,具有触杀和胃毒作用,还具有很好的神经毒性和快速拒食作用,对刺吸式口器害虫有较好的防治效果[3-5]。
目前市场上登记的剂型品种有单剂:10%氟啶虫酰胺WDG、20%%氟啶虫酰胺SC等;复配制剂:23%阿维菌素·氟啶SC、46%氟啶·啶虫脒WDG以及53%氟啶·异丙威WP 等[6]。
自2017年3月24日起,氟啶虫酰胺原药将正式过专利保护期,国内多家农药生产企业竞相合成不同含量的氟啶虫酰胺原药,以提高市场竞争力。
据此优势,并响应国家环保部门的要求,制备出了50%氟啶虫酰胺干悬浮剂并将以下配方作为分析探讨,探究出影响氟啶虫酰胺干悬浮剂制备的影响因素,为农药干悬浮剂的加工制备提供参考。
近年来,水溶性高分子分散剂成为了农药制剂研发的关注热点,特别是新型聚羧酸鹽类分散剂,这些羧酸盐一般为大分子的共聚物,比如:丙烯酸与顺丁烯二酸共聚物、马来酸与丙烯酸共聚物钠盐等[7]它们能够提供多个位点与农药粒子表面结合,强烈地吸附在粒子表面,形成静电斥力或空间位阻,使其不易脱落或共聚,能够有效的增加制剂的贮存稳定性。
杀虫剂最新研制方法(新型介离子类杀虫剂研究进展)据联合国2023年世界粮食安全和营养状况报告称,当今世界上仍有近6.9亿人处于饥饿状态,世界粮食产量仍不能满足人类的需求。
有预测显示,到2050年全球粮食产量需提高60%才能够养活不断增长的世界人口,如何提升粮食的产量与质量成为日益突显的关键问题。
众所周知,在粮食生产中合理使用农药,可以有效地防治病虫草害,从而大幅减少粮食的损失。
目前世界常用农药有600多种,然而,这些已有的品种并不代表可以一直使用下去。
随着对食品安全和环境安全的要求不断提高,农药研发也始终在向着高效、绿色、环保的方向不断提升。
同时,病虫草害对农药所产生的抗药性也呈现出逐年递增的趋势,因此不断研发具有新颖结构以及全新作用机理的绿色农药品种成为目前的迫切需求。
杀虫剂从诞生就始终伴随着毒性问题,新烟碱类等老牌杀虫剂的长期、大量使用,导致其对非靶标生物的毒性蓄积和生态环境问题越来越突出,尤其是部分重要害虫对常用杀虫剂的抗性明显增强。
如对噻虫嗪(thiamethoxam)和烯啶虫胺(nitenpyram)敏感的褐飞虱,田间种群在经过连续30代室内抗性筛选后,抗性上升几十倍(烯啶虫胺)甚至数百倍(噻虫嗪)。
据报道,2023年全球杀虫剂市场规模约为151.46亿美元,因新品种销售市场增长乏力,导致规模和增速均不及除草剂和杀菌剂,增长动力明显不足,市场规模已被杀菌剂超越。
市场亟需要补充全新结构、全新机理的绿色安全杀虫剂,以满足不断增长的实际需求和应对越发严峻的抗性挑战。
1介离子杀虫剂的创制经纬与合成1.1 三氟苯嘧啶(triflumezopyrim)和二氯噻吡嘧啶(dicloromezotiaz)三氟苯嘧啶是杜邦公司(现科迪华)专为亚太地区开发的具有全新化学结构和作用机理的介离子类杀虫剂,可用于水稻、棉花、玉米和大豆等作物,对鳞翅目、同翅目等多种害虫均具有很好的防效。
科迪华首先将该产品开发用于水稻,防治水稻飞虱、叶蝉等,特别是防治褐飞虱。
四氯虫酰胺的合成及其杀虫活性李斌;杨辉斌;王军锋;宋玉泉【摘要】四氯虫酰胺(SYP-9080)是沈阳化工研究院有限公司创制的杀虫剂,对哺乳动物低毒,对鳞翅目害虫防效优异,具有应用前景和开发价值。
重点对四氯虫酰胺的合成方法、生物活性等方面进行了简要介绍。
四氯虫酰胺以2,3,5-三氯吡啶为起始原料经7步制得,对甜菜夜蛾、小菜蛾、黏虫、二化螟及稻纵卷叶螟等鳞翅目害虫具有优异的防效。
%Si lv chong xian’an (SYP-9080) was discovered by Shenyang Research Institute of Chemical Industry Co., Ltd. It had low toxicity to mammals, high levels of insecticidal activity on abroad range of Lepidoptera, and showed a good application future and development value. In this paper, the synthesis and insecticidal activity of Si lv chong xian'an were described. Si lv chong xian’an was prepared from 2,3,5-trichloropyridine through seven steps. It had excellent activity against beet armyworm, diamond back moth, armyworm, striped rice borer, rice leaf roller, etc.【期刊名称】《现代农药》【年(卷),期】2014(000)003【总页数】5页(P17-20,40)【关键词】四氯虫酰胺;合成;生物活性【作者】李斌;杨辉斌;王军锋;宋玉泉【作者单位】沈阳化工研究院有限公司,新农药创制与开发国家重点实验室,沈阳110021;沈阳化工研究院有限公司,新农药创制与开发国家重点实验室,沈阳110021;沈阳化工研究院有限公司,新农药创制与开发国家重点实验室,沈阳110021;沈阳化工研究院有限公司,新农药创制与开发国家重点实验室,沈阳110021【正文语种】中文【中图分类】TQ450.2+1;TQ453.2+992000年代开发的双酰胺类杀虫剂,对水稻等作物上的害虫具有优异的防效,并对非靶标生物安全。
灭蟑饵剂研发进展姚志牛1高业成2(1.南通功成精细化工有限公司,江苏南通 226406(2.武汉大学生命科学学院,湖北武汉 430072)蟑螂是多种病原体携带者和过敏与哮喘的重要诱发因子,也是卫生害虫防治的重要目标。
早期蟑螂防治大量采用触杀药剂滞留喷洒,在防治蟑螂同时可能引起室内化学农药污染。
颗粒毒饵、胶饵、膏剂等胃毒饵剂利用蟑螂主动取食行为定点施药,效率高、对环境影响小,逐渐成为蟑螂防治的主要手段。
据中国农药信息网统计,截至2008年9月在中国有效登记、标称可以灭蟑螂的卫生杀虫剂品种274个,其中饵剂品种64个(有效成分12种),占灭蟑品种的23.4%。
灭蟑饵剂市场的快速扩展也带来了产品剂型设计欠佳、质量不稳、施用不科学等问题。
2008年因到期未续展而失效的54个灭蟑螂卫生杀虫剂品种中,饵剂有24个,占44.4%,显著高于其他品种。
本文拟对灭蟑饵剂研发进行综述,总结灭蟑饵剂研发进展。
1.胃毒灭蟑新化合物研究作为饵剂杀虫有效成分的胃毒化合物除需要满足卫生杀虫剂一般标准外,尚需对蟑螂无驱避性、中毒症状缓和、有适当的潜伏期、可以克服日益严重的杀虫剂抗性等条件。
近年来筛选的灭蟑饵剂用新化合物有多氟脲(Noviflumuron)、氰氟虫腙(Metaflumizone)、茚虫威(indoxacarb)、氟虫脲(flufenoxuron)等,此类新化合物共同特点是杀虫机制与拟除虫菊酯类、有机磷类等神经毒剂不同,多为昆虫生长调节因子(IGR)。
多氟脲属于苯甲酰基脲类杀虫剂(benzoylphenyl ureas),由陶氏农业科学研发,是一种昆虫生长调节因子,可以抑制昆虫几丁质合成,因而扰乱昆虫蜕皮和胚胎发育。
蟑螂若虫取食多氟脲后在蜕皮前或过程中死亡,成虫取食多氟脲后不能产出具有生殖能力的卵而导致种群消亡。
以0.001-0.5%剂量有选择实验喂食实验室和野生品系的德国小蠊,分别在11天和19天达到90%的杀灭率。
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