Emulsionable herbicides

A technology of emulsifiable concentrates and dosage forms, which can be used in biocides, animal repellants, plant growth regulators, etc., and can solve problems such as unpopularity and environmental damage

Inactive Publication Date: 2002-08-14
BASF AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These surfactants are potentially damaging to the environment due to the generation of toxic metabolites, and their use is frowned upon due to suspected estrogenic activity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 4～6

[0091] Component

[0092] The performance of emulsifiable concentrates is evaluated according to the following CIPAC or OECD methods:

[0093] (C) The pH value of 1% water emulsion (CIPAC MT 75)

[0094] The pH value of the formulation diluted with 1% demineralized water was measured at 20°C with a pH meter and a glass electrode.

[0095] (D) Density (OECD Guide 109)

[0096] The density of the corresponding emulsifiable concentrate is measured with a swing densitometer at 20°C.

[0097] The properties of the emulsifiable concentrate formulations of Examples 4 to 6 obtained by the method described above are shown in Table II below.

[0098] Performance

[0099] The foaming of all emulsifiable concentrates was evaluated according to CIPAC method MT 47. A 100ml graduated cylinder filled with 100ml of water was inverted 30 times, and the lasting foam to the water diluent (1-2%) was less than 20ml.

Embodiment 7～9

[0101] Component

[0102] The properties of the emulsifiable concentrate formulations of Examples 7-9 obtained by the method described above are shown in Table III below.

[0103] Performance

[0104] Despite the presence of water-miscible substances (N-methylpyrrolidone, γ-butyrolactone), the spray dilutions (emulsions) of Examples 7-9 are still stable. The active ingredients have good environmental compatibility. All foaming experiments of emulsifiable concentrates were evaluated according to CIPAC method MT 47. A 100ml graduated cylinder filled with 100ml of water was inverted 30 times, and the lasting foam to the water diluent (1-2%) was less than 20ml.

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PUM

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Abstract

The invention relates to a non-aqueous, emulsifiable concentrate formulation for herbicidal crop protection active compounds and application of the same as herbicidal emulsifiable concentration. The emulsifiable concentration consists essentially of(a) 25 to 150 g/L of at least one fluorinated herbicidal compound,(b) 400 to 900 g/L of one or more herbicidal alkyl phenoxyalkanoates,(c) 10 to 100 g/L of at least one non-ionic surfactant,(d) 10 to 100 g/L of at least one benzene sulfonate,(e) 50 to 600 g/L of one or more solvent selected from the group consisting of aliphatic or aromatic hydrocarbons, methylated plant oils and water-miscible polar aprotic organic solvents, and(f) optionally, up to 5 g/L of at least one defoamer,and to the use of such a emulsifiable concentrate as a herbicide.

Description

Background of the invention [0001] Emulsifiable concentrate (EC) dosage form is a popular liquid delivery system for agricultural active compounds. Generally, conventional emulsifiable concentrates include active ingredients, one or more surfactants that are diluted with water to emulsify the emulsifiable concentrate, and a solvent that is immiscible with water. Typical solvents used in conventional emulsifiable concentrates are aliphatic or aromatic hydrocarbons, such as xylene, Shellsol A or Solvesso 200. These solvents have very low solubility in water, but can dissolve a wide range of effective ingredients. [0002] Due to the presence of solvents, many pesticides formulated into emulsifiable concentrates have higher systemicity and comprehensive activity than the same pesticides formulated into wettable powder (WP), water dispersible granules (WG) or suspending concentrate (SC) and are more affected. Favor. [0003] The concentrate is easy to store and transport. In order to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/30A01N39/04A01N43/40
CPCA01N43/40A01N39/04A01N39/02A01N25/30A01N25/02A01N2300/00
Inventor F·施密德特
Owner BASF AG
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