CN109006860A - 草铵膦和麦草畏组分的油悬浮除草剂及其制备方法 - Google Patents
草铵膦和麦草畏组分的油悬浮除草剂及其制备方法 Download PDFInfo
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Abstract
本发明提出了一种除草剂草铵膦和麦草畏组分的油悬浮剂及其制备方法。含有草铵膦原药1%~30%、麦草畏原药0.5%~10%、流变剂1%~5%、表面活性剂1%~30%、油性物质1%~50%。本发明解决草铵膦在低温地区使用药效差,见效慢的解决方案。本发明包括,按百分比计,含有草铵膦原药1%~30%、麦草畏原药0.5%~10%、表面活性剂1%~30%、油性物质1%~50%。本发明所述的制剂配方中含有润湿、渗透剂、扩散剂等表面活性剂及植物源改性油酯,可在低温干旱的条件下刺激杂草叶片气孔的开启,促进杂草增加对草铵膦药剂的吸收,明显改善单用草铵膦在低温地区药效表现差,死草慢,除草效果差的弊端,同时草铵膦和麦草畏复配可以起到扩大杀草谱,节本增效的目的。
Description
技术领域
本发明属于农药技术领域,具体涉及解决明显改善单用草铵膦原药在低温地区药效表现差,死草慢,除草效果差的弊端,同时草铵膦和麦草畏复配可以起到扩大杀草谱,节本增效的目的。
背景技术
草铵膦是目前世界上大吨位除草剂品种之一,与草甘膦相比,草铵膦对部分多年生恶性杂草的去除效果更好,在高经济价值作物领域更有市场竞争力,是草甘膦唯一替代品,草铵膦除草效果主要受三方面因素影响,即:湿度、温度、光照。湿度的影响:气候干旱,植物为了减少蒸腾作用,关闭气孔、叶片卷曲、叶皮增厚,不利于草铵膦的吸收,影响药效;空气湿润,植物叶片表面蜡层保持湿润状态,气孔开放,提高了植物对草铵膦的吸收,利于药效的发挥。温度:在低温条件下,草铵膦通过角质层和细胞膜的能力降低,从而影响除草效果。草铵膦随着温度的上升,杀草效果随之提高,建议使用温度15摄氏度以上,低温效果不好。光照:光照条件好的情况下,植物的蒸腾作用强,利于草铵膦药效的发挥。目前低温地区使用的草甘膦产品普遍存在药效表现差,见效慢、死草不彻底,易复活等问题。
发明内容
本发明的目的是为了解决上述技术问题,扩大草铵膦产品的使用区域,解决其在低温地区使用药效表现差,死草慢,除草效果差的问题,同时草铵膦和麦草畏复配可以起到扩大杀草谱,节本增效的目的。
为此本发明采用的技术方案是:一种草铵膦和麦草畏组合的油悬浮除草剂,含有草铵膦原药1%~30%、麦草畏原药0.5%~10%、1%~5%流变剂、表面活性剂1%~30%、油性物质1%~50%。
优选地 ,本发明所述的一种草铵膦和麦草畏组合的油悬浮除草剂,按比例计算,草铵膦原药与麦草畏原药的两者的最佳比例为3:1~6:1之间。
优选地,所述表面活性剂为:磺化琥珀酸二辛酯钠盐(快速渗透剂T),脂肪醇聚氧乙烯醚(AEO)、十二烷基苯磺酸钙、环氧乙烷环氧丙烷嵌段基醚、烷基酚聚氧乙烯醚、辛基酚聚氧乙烯醚、山梨醇聚氧乙烯醚、蓖麻油聚氧乙烯醚(EL)中的一种或几种。
优选地,所述的油性物质选自大豆油、菜籽油、棕榈油、甲酯化大豆油、甲酯化菜籽油、油酸甲酯、甲酯化棕榈油、蓖麻油、棉籽油、肉豆蔻酸异丙酯、月桂酸异丙酯、松子基植物油中的一种或几种
优选地,所述的流变剂物质选自无机硅酸镁铝、有机硅酸镁铝,有机膨润土,凹凸棒土,羧甲基纤维素、羟丙基纤维素、气相法白炭黑,沉降法白炭黑中的一种或几种。
本发明提供一种除草剂草铵膦和麦草畏组分的油悬浮剂剂制备方法,包含以下步骤:
步骤(1),将1%~30%所述的草铵膦原药与0.5%~10%的麦草畏原药、1%~30%的表面活性剂和1%~5%的流变剂溶解分散在1%~50%的油性物质中,经低速搅拌形成粒径分布在100~2000微米左右的悬浊液。
步骤(2),将步骤(1)所得到的悬浊液经过高速剪切,胶体磨粗研磨,得到粒子粒径分布在10~100微米左右的粗分散油悬浮液,然后将此粗分散油悬浮液采用卧式湿法砂磨的方式反复砂磨至粒径达到1~3微米为止,得到最终的均匀的粘稠草铵膦.麦草畏油悬浮剂产品。
本发明的有益效果是:制剂的加工剂型为油悬浮剂,采用植物源溶剂油作为稀释剂,与普通的草铵膦水剂或麦草畏水剂或部分以矿物源溶剂油作为稀释剂的剂型相比,油属于非极性溶剂,与杂草表面的亲和度要比极性溶剂的水大得多得多,与普通芳烃矿物源溶剂油成分相比,因植物源溶剂油来源于植物自身,植物源溶剂油与杂草等植物的亲和度比矿物源溶剂油更高,更易被杂草植物吸收,而且植物源溶剂油的沸点比普通芳烃矿物源溶剂油的沸点更高,在空气中的挥发速度比矿物源溶剂油慢,可使杂草表面长时间保持湿润状态,延长杂草对除草剂草铵膦和麦草畏药物的吸收时间,增加吸收量,从而保证杂草能吸收到足够致死量的除草剂有效成分,克服现在市场上普遍因低温湿度低,空气干燥导致药液喷洒到杂草叶片上后快速挥发,原药有效成分很快成固体结晶析出,导致杂草对有效成分的吸收大幅度减少而导致除草效果很差,杂草死后又复活的情况发生。可以使草铵膦和麦草畏有效成分在喷洒到杂草叶面后能较长时间的保持液态,延加杂草吸收除草剂的时间,从而保证杂草能够吸收到足够致死剂量的除草剂,克服现有市场上的产品在低温条件下使用效果很差的行业难题。
制剂配方中含有的表面活性剂具有很强的润湿渗透性,可以快速的溶解掉杂草叶片的蜡质层,使药物更容易透过叶片表面进而渗透吸收进入杂草体内发挥作用。杂草在低温条件干燥的条件下,出于自身的保护机制,会增加杂草叶片的蜡质层厚度,减少叶片气孔的开合度与数量,减少与外界的水汽交换频率,从而减少自身水分的蒸腾与流失,而这种保护机制也同时阻碍了杂草叶片对除草剂的吸收量,导致在相同剂量的使用量下,北方低温地区效果要远差于南方高温地区。加入润湿渗透剂等表面活性剂后,这些表面活性剂可以快速的溶解掉杂草叶片的疏水性蜡质层,促进杂草叶片气孔的重新部分开放,加快水汽交换的频率,从而可以促进草铵膦和麦草畏在杂草叶片的渗透和吸收。
制剂配方中含有的麦草畏原药,与草铵膦复配后具有良好的协同、增效作用,能够有效用于多年生耐性植物、大龄杂草等防治,有效提高草铵膦、麦草畏的防治范围,显著延长持效期,减缓单用草铵膦导致杂草抗性的快速上升。同时该组合物制备方法简便易行,加工设备易得,成本低,具有明显的市场推广价值和经济效益。
具体实施方式
为了加深对本发明的理解,下面结合实施例对本发明作进一步详述,这些实施例仅用于解释本发明,并不构成对本发明保护范围的限定。
实施例1:步骤(1),将9.0%所述的草铵膦原药1.0%的麦草畏原药、5%磺化琥珀酸二辛酯钠盐(快速渗透剂T),6%十二烷基苯磺酸钙、12%脂肪醇聚氧乙烯醚(AEO-5)、8%蓖麻油聚氧乙烯醚(EL-10)表面活性剂和2%有机机硅酸镁铝溶解分散在6%大豆油、菜籽油、8%棕榈油、12%油酸甲酯、18%肉豆蔻酸异丙酯、13%松子基植物油中经低度搅拌形成粒径分布在100~2000微米左右的悬浊液。
步骤(2),将步骤(1)所得到的悬浊液经过高速剪切,胶体磨粗研磨,得到粒子粒径分布在10~100微米左右的粗分散油悬浮剂液,然后将此粗悬浮液采用卧式湿法砂磨的方式反复砂磨至粒径达到1~3微米为止,得到最终的均匀的粘稠的 10%草铵膦.麦草畏油悬浮剂产品。
实施例2:步骤(1),将14%所述的草铵膦原药2.0%的麦草畏原药、5%磺化琥珀酸二辛酯钠盐(快速渗透剂T),7%十二烷基苯磺酸钙、10%脂肪醇聚氧乙烯醚(AEO-5)、8%蓖麻油聚氧乙烯醚(EL-10)表面活性剂和1%无机硅酸镁铝、1%气相白炭黑溶解分散在6%菜籽油、8%甲酯化棕榈油、10%油酸甲酯、16%肉豆蔻酸异丙酯、12%棉籽油中经低度搅拌形成粒径分布在100~2000微米左右的悬浊液。
步骤(2),将步骤(1)所得到的悬浊液经过高速剪切,胶体磨粗研磨,得到粒子粒径分布在10~100微米左右的粗分散油悬浮剂液,然后将此粗悬浮液采用卧式湿法砂磨的方式反复砂磨至粒径达到1~3微米为止,得到最终的均匀的粘稠的 16%草铵膦.麦草畏油悬浮剂产品。
实施例3:
步骤(1),将18%所述的草铵膦原药3.0%的麦草畏原药、5%磺化琥珀酸二辛酯钠盐(快速渗透剂T),8%十二烷基苯磺酸钙、10%脂肪醇聚氧乙烯醚(AEO-5)、6%蓖麻油聚氧乙烯醚(EL-10)表面活性剂和1%有机硅酸镁铝、1%水合白炭黑溶解分散在6%大豆油、8%月桂酸异丙酯、10%油酸甲酯、15%肉豆蔻酸异丙酯、9%松子基植物油中经低度搅拌形成粒径分布在100~2000微米左右的悬浊液。
步骤(2),将步骤(1)所得到的悬浊液经过高速剪切,胶体磨粗研磨,得到粒子粒径分布在10~100微米左右的粗分散油悬浮剂液,然后将此粗悬浮液采用卧式湿法砂磨的方式反复砂磨至粒径达到1~3微米为止,得到最终的均匀的粘稠的 21%草铵膦.麦草畏油悬浮剂产品。
实施例4:步骤(1),将22%所述的草铵膦原药4.0%的麦草畏原药、5%辛基酚聚氧乙烯醚,8%十二烷基苯磺酸钙、10%脂肪醇聚氧乙烯醚(AEO-5)、7%蓖麻油聚氧乙烯醚(EL-10)表面活性剂和2.0%凹凸棒土,1.0%羧甲基纤维素溶解分散在5%菜籽油、8%月桂酸异丙酯、10%油酸甲酯、14%棉籽油、4%松子基植物油中经低度搅拌形成粒径分布在100~2000微米左右的悬浊液。
步骤(2),将步骤(1)所得到的悬浊液经过高速剪切,胶体磨粗研磨,得到粒子粒径分布在10~100微米左右的粗分散油悬浮剂液,然后将此粗悬浮液采用卧式湿法砂磨的方式反复砂磨至粒径达到1~3微米为止,得到最终的均匀的粘稠的 26%草铵膦.麦草畏油悬浮剂产品。
实施例5:步骤(1),将25%所述的草铵膦原药5.0%的麦草畏原药、5%辛基酚聚氧乙烯醚,8%十二烷基苯磺酸钙、10%脂肪醇聚氧乙烯醚(AEO-5)、7%蓖麻油聚氧乙烯醚(EL-10)表面活性剂和1%凹凸棒土、1%羟丙基纤维素,溶解分散在6%蓖麻油、8%月桂酸异丙酯、10%油酸甲酯、7%肉豆蔻酸异丙酯、7%棉籽油中经低度搅拌形成粒径分布在100~2000微米左右的悬浊液。
步骤(2),将步骤(1)所得到的悬浊液经过高速剪切,胶体磨粗研磨,得到粒子粒径分布在10~100微米左右的粗分散油悬浮剂液,然后将此粗悬浮液采用卧式湿法砂磨的方式反复砂磨至粒径达到1~3微米为止,得到最终的均匀的粘稠的 30%草铵膦.麦草畏油悬浮剂产品。
Claims (5)
1.一种草铵膦和麦草畏组分的油悬浮除草剂,其特征在于,按重量百分比计:含有草铵膦原药1%~30%、麦草畏原药0.5%~10%、流变剂1%~5%、表面活性剂1%~30%、油性物质1%~50%。
2.根据权利要求1所述的草铵膦和麦草畏组分的油悬浮除草剂,其特征在于,所述表面活性剂为:磺化琥珀酸二辛酯钠盐(快速渗透剂T),脂肪醇聚氧乙烯醚(AEO系类)、十二烷基苯磺酸钙、环氧乙烷环氧丙烷嵌段基醚、烷基酚聚氧乙烯醚、辛基酚聚氧乙烯醚、山梨醇聚氧乙烯醚、蓖麻油聚氧乙烯醚(EL系类)中的一种或几种。
3.根据权利要求1所述的草铵膦和麦草畏组分的油悬浮除草剂,其特征在于,所述的油性物质选自大豆油、菜籽油、棕榈油、甲酯化大豆油、甲酯化菜籽油、油酸甲酯、甲酯化棕榈油、蓖麻油、棉籽油、肉豆蔻酸异丙酯、月桂酸异丙酯、松子基植物油中的一种或几种。
4.根据权利要求1所述的草铵膦和麦草畏组分的油悬浮除草剂,其特征在于,所述的流变剂物质选自无机硅酸镁铝、有机硅酸镁铝,有机膨润土,凹凸棒土,羧甲基纤维素、羟丙基纤维素、气相法白炭黑,沉降法白炭黑中的一种或几种。
5.草铵膦和麦草畏组分的油悬浮除草剂的制备方法,其特征在于,包括以下步骤:
(1)1%~30%所述的草铵膦原药与0.5%~10%的麦草畏原药、1%~30%的表面活性剂和1%~5%的流变剂溶解分散在1%~50%的油性物质中,经低速搅拌形成粒径分布在100~2000微米左右的悬浊液;
(2)将此悬浊液经过高速剪切,胶体磨粗研磨,得到粒子粒径分布在10~100微米左右的粗分散油悬浮剂液,然后将此粗分散油悬浮液采用卧式湿法砂磨的方式反复砂磨至粒径达到1~3微米为止,得到最终的均匀的粘稠草甘膦,麦草畏油悬浮剂产品。
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