CN116636544A - 一种增效助剂及茚虫威•虱螨脲液体制剂 - Google Patents
一种增效助剂及茚虫威•虱螨脲液体制剂 Download PDFInfo
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Abstract
本发明属于农药技术领域,具体涉及一种增效助剂及茚虫威·虱螨脲液体制剂,该增效助剂包括香茅油、矿物油、异构醇聚氧乙烯醚,香茅油、矿物油、异构醇聚氧乙烯醚的重量比为2‑6:6‑10:3‑8,将该增效助剂用于茚虫威·虱螨脲液体制剂中,可明显降低药剂的表面张力、增加药剂的渗透性及粘附力,从而起到增效的作用。
Description
技术领域
本发明属于农药技术领域,具体涉及一种增效助剂及茚虫威·虱螨脲液体制剂。
背景技术
在作物种植过程中,基本已离不开农药,化学农药防治见效快,可快速控制病虫害的发生,保障了作物的丰产。茚虫威属于噁二嗪类杀虫剂,具有独特的作用机理,其在昆虫体内被迅速转化为N-去甲氧羰基代谢物后不可逆地阻断钠通道,进而发挥杀虫活性,1998年茚虫威开始登记和使用。虱螨脲属于苯甲酰脲类杀虫剂,是几丁质合成抑制剂,1993年,先正达在法国首先上市了虱螨脲。
专利CN 101485329 B于2009年申请了茚虫威和虱螨脲的杀虫农药组合物,与单剂对比,提高了防治效果、降低了用药量、扩大了防治谱。抗药性是任何杀虫剂使用后面临的问题,茚虫威和虱螨脲也不例外,随着茚虫威和虱螨脲长时间不科学的使用,许多害虫对其产生了不同程度的抗药性,这就导致为了达到理想的防治效果,随意加大农药使用量,增加了用药成本并造成了环境的污染。常规茚虫威和虱螨脲农药杀虫剂,使用时由于药液表面张力较大,雾滴不能在靶标叶面上有效润湿、铺展、附着导致药液流失较多,导致药效较差。
发明内容
为了提高茚虫威和虱螨脲液体制剂的防治效果,延缓抗药性,减少用药量,保护生态环境,本发明提供了一种增效助剂及茚虫威·虱螨脲液体制剂,通过香茅油、矿物油、异构醇聚氧乙烯醚的复配获得茚虫威和虱螨脲液体制剂的增效助剂,可明显降低茚虫威和虱螨脲药液的表面张力、增加药剂的渗透性,并快速穿透虫体,从而起到增效的作用。
本发明的技术方案如下:
一种茚虫威·虱螨脲液体制剂增效助剂,包括香茅油、矿物油、异构醇聚氧乙烯醚,香茅油、矿物油、异构醇聚氧乙烯醚的重量比为2-6:6-10:3-8。
作为一种具体实施方式,所述异构醇聚氧乙烯醚中异构醇碳原子个数为C9-C12,EO个数为6-8个。
由于异构醇聚氧乙烯醚中烷基链的长度及EO聚合度的大小,会影响异构醇聚氧乙烯醚降低表面张力的能力,异构醇聚氧乙烯醚中异构醇碳原子个数为C9-C12,EO个数为6-8个。
一种茚虫威·虱螨脲液体制剂,包含有效成分和助剂,助剂包括分散剂、润湿剂、乳化剂、防冻剂、增稠剂、消泡剂中的一种或多种以及增效助剂,增效助剂包括香茅油、矿物油、异构醇聚氧乙烯醚,香茅油、矿物油、异构醇聚氧乙烯醚的重量比为2-6:6-10:3-8。
一种茚虫威·虱螨脲液体制剂,包含有效成分和助剂,助剂包括分散剂、润湿剂、乳化剂、防冻剂、增稠剂、消泡剂一种或多种以及增效助剂,增效助剂包括香茅油、矿物油、异构醇聚氧乙烯醚,香茅油、矿物油、异构醇聚氧乙烯醚的重量比为2-6:6-10:3-8;所述异构醇聚氧乙烯醚中异构醇碳原子个数为C9-C12,EO个数为6-8个。
作为一种具体实施方式,所述增效助剂的含量为5-8%。
作为一种具体实施方式,有效成分茚虫威和虱螨脲的含量为12-22%。
作为一种具体实施方式,所述液体制剂为悬浮剂或微乳剂。
作为一种具体实施方式,所述分散剂为聚羧酸盐类分散剂、高分子双亲型阴非离子表面活性剂中的一种或几种。
作为一种具体实施方式,所述润湿剂为改性烷基酚聚氧乙烯醚类润湿剂。
作为一种具体实施方式,所述消泡剂为聚硅氧烷类消泡剂;所述增稠剂为黄原胶、白炭黑中的一种或两种,防冻剂为乙二醇。
作为一种具体实施方式,所述乳化剂为脂肪醇聚氧乙烯醚磷酸酯、聚氧丙烯聚氧乙烯嵌段聚合物中的一种或几种
茚虫威和虱螨脲具有触杀和胃毒作用,只有通过降低药剂的表面张力,减少药剂的流失,降低茚虫威和虱螨脲药液的表面张力和提高药剂的渗透性,使药剂快速接触害虫并进入体内,才能有效的防治害虫。发明人经过反复的试验,最终得到一种适配于茚虫威·虱螨脲液体制剂的增效助剂,其中矿物油可提高药剂的渗透性,异构醇聚氧乙烯醚可降低药剂的表面张力,香茅油可以溶解害虫体壁,使药剂快速进入昆虫体内;三种不同作用机理的增效助剂组合,可明显降低药剂的表面张力,提高药剂的渗透性,并快速穿过昆虫体壁,提高药剂防治效果。
本发明提供的增效助剂,茚虫威·虱螨脲液体制剂中加入该增效助剂,可以增加茚虫威·虱螨脲液体制剂的润湿渗透性以及对害虫体壁的溶解能力,同时降低药液的表面张力,显著提高了茚虫威·虱螨脲液体制剂的防治效果,降低药剂使用量,有利于延长药剂生命周期。
具体实施方式
下面将对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
下述实施例及对比例中所使用的实验方法如无特殊说明,均为常规方法,下述百分数为重量百分数。
下述实施例及对比例中所用的材料、试剂等,如无特殊说明,均可从商业途径得到。
下述实施例及对比例中所以采用的SP-27001、SP-SC29购自江苏擎宇化工科技有限公司;GY-D07购自北京广源益农化学有限责任公司;860P购自SOLVAY;Sag 1522购自迈图高新材料集团;其它原材料均为市场上可容易购得的产品。
实施例1:12%茚虫威·虱螨脲悬浮剂
茚虫威,8%;虱螨脲,4%;分散剂SP-SC29,2%;GY-D07,3%;润湿剂860P,1%;乳化剂,AEO-7P,2%、1601,4%;消泡剂Sag 1522,0.3%;防冻剂乙二醇,4%;增稠剂黄原胶,0.1%、白炭黑,1.5%;增效助剂:香茅油1%、矿物油3%、异构醇聚氧乙烯醚(C9\EO8)3%;去离子水63.1%。
实施例2:12%茚虫威·虱螨脲悬浮剂
茚虫威,8%;虱螨脲,4%;分散剂SP-SC29,2%、GY-D07,3%;润湿剂860P,1%;乳化剂,AEO-7P,2%、1601,4%;消泡剂Sag 1522,0.3%;防冻剂乙二醇,4%;增稠剂黄原胶,0.1%、白炭黑,1.5%;增效助剂:香茅油1%、矿物油4%、异构醇聚氧乙烯醚(C11\EO7)3%;去离子水62.1%。
实施例3:12%茚虫威·虱螨脲悬浮剂
茚虫威,8%;虱螨脲,4%;分散剂SP-SC29,2%、SP-27001,3%;润湿剂860P,1%;乳化剂,AEO-7P,4%、1601,2%;消泡剂Sag 1522,0.3%;防冻剂乙二醇,4%;增稠剂黄原胶,0.1%、白炭黑,1.5%;增效助剂:香茅油1.5%、矿物油4.5%、异构醇聚氧乙烯醚(C8\EO6)2%;去离子水,62.1%。
以上实施例1-3,12%茚虫威·虱螨脲悬浮剂的制备方法具体包括以下步骤:
(1)将水、分散剂、润湿剂、乳化剂、增效助剂、消泡剂、防冻剂按配比加入反应釜中,搅拌使其混匀;
(2)按配比将茚虫威原药、虱螨脲原药、增稠剂加入反应釜中,搅拌、剪切使其混合均匀,得到混合液;
(3)将步骤(2)得到的混合液加入砂磨机中进行研磨,至粒径D90=5um,研磨完成即得12%茚虫威·虱螨脲悬浮剂。
对比例1:12%茚虫威·虱螨脲悬浮剂
茚虫威,8%;虱螨脲,4%;分散剂SP-SC29,2%;GY-D07,3%;润湿剂860P,1%;乳化剂,AEO-7P,2%、1601,4%;消泡剂Sag 1522,0.3%;防冻剂乙二醇,4%;增稠剂黄原胶,0.1%、白炭黑,1.5%;去离子水70.1%。
与实施例1相比,对比例1中未添加香茅油、矿物油、异构醇聚氧乙烯醚。对比例2:12%茚虫威·虱螨脲悬浮剂
对比例2按照专利CN101485329B提供方法配制12%茚虫威·虱螨脲悬浮剂,具体配方如下:
茚虫威,8%;虱螨脲,4%;甲基萘磺酸钠甲醛缩合物,10%;黄原胶,1%;膨润土,1%;丙三醇,5%;去离子水,71%。
将活性成分、分散剂、润湿剂和水等各组分按配方得比例混合均匀,经研磨后得12%茚虫威·虱螨脲悬浮剂。
与实施例1相比,对比例2未添加香茅油、矿物油、异构醇聚氧乙烯醚增效助剂,助剂不同。
对比例3:12%茚虫威·虱螨脲悬浮剂
茚虫威,8%;虱螨脲,4%;分散剂SP-SC29,2%、GY-D07,3%;润湿剂860P,1%;乳化剂,AEO-7P,2%、1601,4%;消泡剂Sag 1522,0.3%;防冻剂乙二醇,4%;增稠剂黄原胶,0.1%、白炭黑,1.5%;增效助剂香茅油1%、矿物油3%;去离子水,66.1%。
与实施例1相比,对比例3未添加异构醇聚氧乙烯醚。
对比例4:12%茚虫威·虱螨脲悬浮剂
茚虫威,8%;虱螨脲,4%;分散剂SP-SC29,2%、GY-D07,3%;润湿剂860P,1%;乳化剂,AEO-7P,2%、1601,4%;消泡剂Sag 1522,0.3%;防冻剂乙二醇,4%;增稠剂黄原胶,0.1%、白炭黑,1.5%;增效助剂香茅油1%、异构醇聚氧乙烯醚(C9\EO8)3%;去离子水,66.1%。
与实施例1相比,对比例4未添加矿物油。
对比例5:12%茚虫威·虱螨脲悬浮剂
茚虫威,8%;虱螨脲,4%;分散剂SP-SC29,2%、GY-D07,3%;润湿剂860P,1%;乳化剂,AEO-7P,2%、1601,4%;消泡剂Sag 1522,0.3%;防冻剂乙二醇,4%;增稠剂黄原胶,0.1%、白炭黑,1.5%;增效助剂矿物油3%、异构醇聚氧乙烯醚(C9\EO8)3%;去离子水,64.1%。
与实施例1相比,对比例5未添加香茅油。
对比例6:12%虫螨腈悬浮剂
虫螨腈,12%;分散剂SP-SC29,2%、GY-D07,3%;润湿剂860P,1%;乳化剂,AEO-7P,2%、1601,4%;消泡剂Sag 1522,0.3%;防冻剂乙二醇,4%;增稠剂黄原胶,0.1%、白炭黑,1.5%;增效助剂香茅油1%、矿物油3%、异构醇聚氧乙烯醚(C9\EO8)3%;去离子水,63.1%。
与实施例1相比,对比例6为不同有效成分虫螨腈悬浮剂。
对比例7:12%虫螨腈悬浮剂
虫螨腈,12%;分散剂SP-SC29,2%、GY-D07,3%;润湿剂860P,1%;乳化剂,AEO-7P,2%、1601,4%;消泡剂Sag 1522,0.3%;防冻剂乙二醇,4%;增稠剂黄原胶,0.1%、白炭黑,1.5%;去离子水,70.1%。
与实施例1相比,对比例6为不同有效成分虫螨腈悬浮剂并且未添加增效助剂。
上述对比例1以及对比例3-7的杀虫农药组合物是根据实施例的制备方法制备得到相应的剂型。
试验
将上述实施例1-3和对比例1-7所制备样品放置冷储0±2℃14天,热储54℃14天,样品流动性均正常,无结底、无絮凝现象,稳定性合格。
药液界面特性测定:表面张力、润湿渗透性测定。
渗透性测定采用纯棉帆布片润湿沉降法进行测定:①配制使用浓度的药剂150ml于200ml烧杯中,搅拌均匀,调节温度为(25±1)℃;②将帆布片放在洗净的铁丝圈上,小心移置于烧杯叶面上,同时开启秒表计时,至帆布圈完成润湿时记录时间,继续至帆布圈刚刚持续沉降时,记下时间;③每浓度的试样平行测定3次;表面张力采用表面张力仪进行测定,表面张力用清水先校正,具体数据如下:
表1各个药剂界面测定参数
由以上实施例和对比例可知:
(1)实施例1、实施例2、实施例3、对比例4、对比例5和对比例6的表面张力较低,而对比例1、对比例3、对比例7的表面张力较大,这也说明了异构醇聚氧乙烯醚的添加可以显著降低药液的表面张力。
(2)由实施例1和对比例1药液的表面张力和润湿渗透性结果可知,茚虫威·除虫脲制剂中添加本发明的增效助剂,显著的降低了药液的表面张力,显著增强了药液的润湿渗透性。
(3)由实施例1和对比例3药液的表面张力和润湿渗透性结果可知,本发明的增效助剂中增加异构醇聚氧乙烯醚,表面张力显著降低,同时润湿渗透性也显著降低,这也验证了药液的表面张力对润湿渗透性性能也有显著影响。
(4)由实施例1和对比例4药液的表面张力和润湿渗透性结果可知,本发明的增效助剂中增加矿物油,显著增强了药液的渗透性,同时一定程度上降低了表面张力。
(5)由实施例1和对比例5药液的表面张力和润湿渗透性结果可知,本发明的增效助剂中增加香茅油,可一定程度上增加药液的渗透性,降低表面张力。
(6)由对比例6和对比例7药液的表面张力和润湿渗透性结果可知,虫螨腈制剂中添加本发明的增效助剂,显著的降低了药液的表面张力,显著增强了药液的润湿渗透性。
田间试验
防治棉铃虫药效试验
试验药剂:实施例1-3、对比例1-7和清水。
试验方法:试验于7月份在新疆一农场进行,试验地土壤质地为沙壤土,肥力中等,在棉铃虫卵孵化高峰期至低龄幼虫始盛期进行试验。每个实验小区面积50m2,每个处理4次重复;采用定点定株调查法,每小区定点调查25株棉花上的幼虫数。施药前调查虫口基数,药后7d、15d分别调查棉花上残留的活虫数,以虫口减退率计算各处理的防治效果。
计算公式为:
虫口减退率=(药前虫口基数-药后虫口基数)÷药前虫口基数×100%
校正防效=(处理组虫口减退率-对照组虫口减退率)÷(1-对照组虫口减退率)×100%
表2不同实施例对棉铃虫的田间防治结果
由表2可以看出,施药后实施例1-3的茚虫威·虱螨脲,在15天时对棉铃虫的防效均在94%以上,在相同亩用药量的情况下,加入增效助剂的实施例1-3药效要好于对比例1-7的对棉铃虫的防治效果。由实施例1和对比例1可知,本发明的增效助剂非常显著的增加了茚虫威·虱螨脲对棉铃虫的防效。由对比例6和对比例7可知,本发明的增效助剂也可以比较明显的增加虫螨腈对棉铃虫的防效。本发明的增效助剂对茚虫威虱螨脲的增效更加明显。
防治甘蓝甜菜夜蛾田间试验
试验药剂:实施例1-3、对比例1-7和清水。
试验方法:试验于在山东省博兴县一蔬菜基地进行,试验地土壤质地为壤土,肥力中等,在甘蓝甜菜夜蛾始盛期进行喷药,每个实验小区面积20m2,每个处理4次重复。在有甜菜夜蛾的甘蓝上做好标记,每小区调查5点,每点调查2株,记录活虫数;施药前调查虫口基数,药后7d、15d分别调查试验上残留的活虫数,以虫口减退率计算各处理的防治效果。
计算公式为:
虫口减退率=(药前虫口基数-药后虫口基数)÷药前虫口基数×100%
校正防效=(处理组虫口减退率-对照组虫口减退率)÷(1-对照组虫口减退率)×100%
表3不同实施例对甜菜夜蛾的田间防治结果
由表3可以看出,施药后实施例1-3的茚虫威·虱螨脲,在15天时对甘蓝甜菜夜蛾的防效均在95%以上,实施例相对于对比例的防效具有明显的提升;在相同亩用药量的情况下,加入增效助剂的实施例1-3药效要好于对比例1-7的对甘蓝甜菜夜蛾的防治效果。由实施例1和对比例1可知,本发明的增效助剂非常显著的增加了茚虫威·虱螨脲对甘蓝甜菜夜蛾的仿效。由对比例6和对比例7可知,本发明的增效助剂也可以比较明显的增加虫螨腈对甘蓝甜菜夜蛾的仿效。本发明的增效助剂对茚虫·威虱螨脲的增效更加明显。
综上所述,本发明提供的一种增效助剂及茚虫威·虱螨脲液体制剂,该增效助剂采用三种不同作用机理的增效助剂组合,可明显降低药剂的表面张力,提高药剂的渗透性,有效提高药剂防治效果;在茚虫威·虱螨脲液体制剂中加入增效助剂后,明显提升茚虫威·虱螨脲液体制剂的防治效果,该增效助剂可有效的降低大田施药的药量和次数,降低了长期使用药剂导致病虫害抗药性产生的风险,对其田间综合防治具有重要意义。
Claims (10)
1.一种茚虫威·虱螨脲液体制剂增效助剂,其特征在于,包括香茅油、矿物油、异构醇聚氧乙烯醚,香茅油、矿物油、异构醇聚氧乙烯醚的重量比为2-6:6-10:3-8。
2.根据权利要求1所述的茚虫威·虱螨脲液体制剂增效助剂,其特征在于,所述异构醇聚氧乙烯醚中异构醇碳原子个数为C9-C12,EO个数为6-8个。
3.一种茚虫威·虱螨脲液体制剂,包含有效成分和助剂,助剂包括分散剂、润湿剂、乳化剂、防冻剂、增稠剂、消泡剂中的一种或多种,其特征在于,助剂还包括增效助剂,所述增效助剂为权利要求1或2所述的增效助剂。
4.根据权利要求3所述的茚虫威·虱螨脲液体制剂,其特征在于,所述增效助剂的含量为5-8%。
5.根据权利要求3所述的茚虫威·虱螨脲悬液体制剂,其特征在于,有效成分茚虫威和虱螨脲的含量为12-22%。
6.根据权利要求3所述的茚虫威·虱螨脲悬液体制剂,其特征在于,所述液体制剂为悬浮剂或微乳剂。
7.根据权利要求3所述的茚虫威·虱螨脲悬液体制剂,其特征在于,所述分散剂为聚羧酸盐类分散剂、高分子双亲型阴非离子表面活性剂中的一种或几种。
8.根据权利要求3所述的茚虫威·虱螨脲悬液体制剂,其特征在于,所述润湿剂为改性烷基酚聚氧乙烯醚类润湿剂。
9.根据权利要求3所述的茚虫威·虱螨脲悬液体制剂,其特征在于,所述消泡剂为聚硅氧烷类消泡剂;所述增稠剂为黄原胶、白炭黑中的一种或两种,防冻剂为乙二醇。
10.根据权利要求3所述的茚虫威·虱螨脲悬液体制剂,其特征在于,所述乳化剂为脂肪醇聚氧乙烯醚磷酸酯、聚氧丙烯聚氧乙烯嵌段聚合物中的一种或几种。
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