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    • 5. 发明授权
    • Enhanced method of killing weeds with glyphosate herbicide
    • 用草甘膦除草剂杀死杂草的增强方法
    • US06908882B1
    • 2005-06-21
    • US09652771
    • 2000-08-31
    • David Z. BecherAl S. WidemanJames C. Forbes
    • David Z. BecherAl S. WidemanJames C. Forbes
    • A01N25/00A01N25/30A01N37/20A01N57/20A01N3/02A01N57/00
    • A01N57/20A01N25/30A01N2300/00
    • A method is provided of enhancing the herbicidal activity of a glyphosate herbicide, comprising adding to the glyphosate herbicide a mixture of a first surfactant and a second surfactant at a weight ratio of total surfactant to glyphosate of about 1:30 to about 2:1, wherein the first surfactant has a chemical structure comprising a cationic or protonatable amino group and a C8-24 linear or branched, saturated or unsaturated hydrocarbyl group, and the second surfactant has the formula R—CO—NR′—(CR′2)n—COOM where R is a C7-23 linear or branched, saturated or unsaturated hydrocarbyl group, n is 1 to 4, M is hydrogen or a cationic counterion, and R′ groups are each independently hydrogen, C1-4 alkyl or a group —(CH2)m—COOM where m is 1 to 4 and M is as defined immediately above, with the proviso that no more than one R′ group is such a group —(CH2)m—COOM; the weight ratio of the first to the second surfactant being about 1:10 to about 10:1. Also provided is a herbicidal composition prepared according to the above method. The first and second surfactants exhibit a synergistic interaction in enhancing herbicidal activity of the glyphosate herbicide.
    • 提供了提高草甘膦除草剂除草活性的方法,其包括以总表面活性剂与草甘膦的重量比为1:30至约2:1,向草甘膦除草剂中加入第一表面活性剂和第二表面活性剂的混合物, 其中所述第一表面活性剂具有包含阳离子或可质子化氨基和C 8-24直链或支链饱和或不饱和烃基的化学结构,并且所述第二表面活性剂具有式 -formulae description =“In-line Formulas”end =“lead”?> R-CO-NR' - (CR'2 n)-COOM < line-formula description =“In-line Formulas”end =“tail”?>其中R是直链或支链饱和或不饱和烃基,n为1至4,M 是氢或阳离子抗衡离子,R'基团各自独立地为氢,C 1-4烷基或基团 - (CH 2 CH 2)m > -COOM,其中m为1至4,M如上所定义 iso,不超过一个R'基团是这样的基团 - (CH 2 CH 2)m -COOM; 第一和第二表面活性剂的重量比为约1:10至约10:1。 还提供了根据上述方法制备的除草组合物。 第一和第二表面活性剂在增强草甘膦除草剂的除草活性方面表现出协同相互作用。