The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 21, 2005
Filed:
Aug. 31, 2000
David Z. Becher, Creve Coeur, MO (US);
AL S. Wideman, St. Louis, MO (US);
James C. Forbes, Glenview, IL (US);
David Z. Becher, Creve Coeur, MO (US);
Al S. Wideman, St. Louis, MO (US);
James C. Forbes, Glenview, IL (US);
Monsanto Company, St. Louis, MO (US);
Abstract
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 Clinear or branched, saturated or unsaturated hydrocarbyl group, and the second surfactant has the formulaR—CO—NR'—(CR′)—COOMwhere R is a Clinear 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, Calkyl or a group —(CH)—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 —(CH)—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.