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High-strength, low viscosity herbicidal formulations of glyphosate

A high-strength, glyphosate-based technology, applied in biocides, animal repellents, plant growth regulators, etc.

Inactive Publication Date: 2006-08-30
CORTEVA AGRISCIENCE LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared to alkylamine ethoxylate surfactants with a higher degree of ethoxylation (e.g., 15-20 moles of ethylene oxide), alkylamine ethoxylate surfactants with a low degree of ethoxylation High potential for active agent to cause eye irritation

Method used

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  • High-strength, low viscosity herbicidal formulations of glyphosate
  • High-strength, low viscosity herbicidal formulations of glyphosate
  • High-strength, low viscosity herbicidal formulations of glyphosate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Embodiment 1: Preparation of high strength glyphosate DMA salt preparation

[0053] A glyphosate DMA salt concentrate was prepared by reacting 408 grams of glyphosate artificial wet cake with 283 grams of a 40% aqueous solution of dimethylamine in 61 grams of water. This concentrate contains 62% glyphosate DMA salt. The solution has a density of 1.259 g / ml.

[0054] Formulations are prepared by blending the resulting concentrate with appropriate amounts of surfactant and water. The examples given in Table 1 demonstrate the invention.

[0055] Table 1

[0056]

Preparation number

g / l glyphosate equivalent, as DMA

Salt

Surfactant

1

360

Ethomeen C / 15, 100g / l

2

360

Ethoquad C / 12, 100g / l

3

360

Tomah Q-14-2, 100g / l

4

360

PEG-20 Tallow Amine, 100g / l

5

540

PEG-10 tallow amine, 100g / l

6

480

PEG-5 tallow amine, 110g / l

...

Embodiment 2

[0069] Example 2: Efficacy of High Strength Glyphosate DMA Salt Formulations

[0070] Efficacy of glyphosate DMA salt formulations against 5 dicotyledonous plants and 3 monocotyledonous weeds was evaluated in a greenhouse experiment. Formulations applied at 100, 200, 400, 600 and 800gae / ha with RoundupUltra TM Herbicide, Roundup UltraMAX TM and RoundupWeatherMAX TM Herbicide (both Monsanto) was used as standard treatment. The spray volume was 187 liters per hectare (l / ha); at the time of application, the weeds were at the 3-leaf stage. Each treatment was replicated 3 times; evaluation was carried out at 14 days after application by visual inspection of the percentage of control.

[0071] Table 3 shows the percent control of each weed class at an application rate of 600 gae / ha.

[0072] table 3

[0073] preparation

[0074] IPOHE Ipomoea hederacea (Morning glory) Morningglory (Morning glory)

[0075] CHEAL Chenopodium album(Chenopodium) Lambsquarter(White ...

Embodiment 3

[0101] Example 3: Preparation of high strength glyphosate MMA salt preparation

[0102] Glyphosate MMA salt concentrate was prepared by reacting 505 grams of glyphosate artificial wet cake with 238 grams of 41% aqueous methylamine in 121 grams of water. This concentrate contains 62% glyphosate MMA salt. The solution has a density of 1.302 g / ml.

[0103] Formulations are prepared by blending the concentrate with appropriate amounts of surfactant and water. The examples given in Table 7 demonstrate the invention.

[0104] Table 7

[0105]

[0106] * Geronol CF / AS 30 is C 12 -C 14 Alkyl dimethyl betaine

[0107] * Akzo Nobel AG 6202 is an alkyl polydextrose

[0108] * Geronol CF / AR is fatty alcohol ethoxylate phosphate ester

[0109] * Eucarol AGE / EC is Alkyl Polyglucose Citrate

[0110] All formulations formed clear homogeneous liquids. These formulations were stable for 2 weeks at 54°C without phase separation and 2 weeks at -10°C without crystalliza...

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Abstract

This invention relates to a high-strength herbicidal formulation containing high concentrations of glyphosate monomethylamine or dimethylamine salt and one or more surfactants selected to enhance the herbicidal activity of the glyphosate salts. The formulations exhibit significantly lower viscosity at high concentrations.

Description

technical field [0001] The present invention relates to high strength liquid formulations of N-phosphonomethylglycine (glyphosate), and more particularly, to high strength liquid formulations of the monomethylamine (MMA) and dimethylamine (DMA) salts of glyphosate. Background technique [0002] Glyphosate is a known effective herbicide. US Patent 4,405,531 discloses a number of organic ammonium salts of glyphosate useful as herbicides, including methylamine and dimethylamine salts, as examples, monoalkylammonium and dialkylammonium are particularly preferred salts. A variety of formulations are currently marketed, many of which are aqueous solutions that can be used as such or diluted prior to use. Typically, glyphosate is provided in the form of a salt that exhibits sufficiently high water solubility to provide a high strength herbicidal formulation. For example, US Patent 6,277,788 discloses the isopropylamine (IPA) and monoethanolamine (MEA) salts of glyphosate. Additi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N57/20A01N25/30A01N25/04A01N25/16A01N57/00
CPCA01N57/20A01N25/32A01N25/02A01N2300/00
Inventor H·汤克S·巴利耶佩利
Owner CORTEVA AGRISCIENCE LLC
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