RU2233085C1 - Herbicide composition - Google Patents

Abstract

FIELD: organic chemistry, herbicides, agriculture.

SUBSTANCE: invention relates to chemical agents used for eradication of weeds and protection of cultural plants. Invention proposes a composition comprising simultaneously N-phosphonomethylglycine (C₁₂H₂₅-C₁₄H₂₉)-alkyldimethylamine salt (I) , 2,4-dichlorophenoxyacetic acid 2-ethylhexyl ester (II) in the ratio of active substances (I) and (II) = (1.2-1.3):1, glycerol as a solvent and, additionally, ethylene glycol, or butyl alcohol as a co-solvent. The prepared herbicide composition can be used for eradication of weeds in fallow, power electric transmission lines, in shoulder of roads, railways and pipelines.

EFFECT: valuable properties of composition.

2 tbl, 13 ex

Description

The invention relates to chemical plant protection products and can be used to combat unwanted vegetation.

Known herbicidal compositions based on salts of N-phosphonomethylglycine (M-FMH, glyphosate) (RU 2190329; 2192131).

Known herbicide composition based on 2,4-D esters, which is an emulsifiable concentrate with an active ingredient content of 71 to 80 wt.% [RU 2163759]. The composition affects a wide range of weeds, but does not affect many resistant species: pikulnik, highlanders, chamomiles, cereal weeds.

Known herbicidal composition of glyphene, 25% aqueous solution of tetramethylmethylenediamine salts of 2,4-dichlorophenoxyacetic acid (2,4-D) and N-phosphonomethylglycine - prototype [RU 1665561]. Glyphene at consumption rates of 4-8 l / ha well destroys perennial and annual weeds.

The disadvantages of glyphene are relatively high consumption rates of the herbicide, low concentration of active substances.

The objective of the invention is to develop a stable preparation based on glyphosate and 2,4-D with higher herbicidal properties.

The problem is solved due to the fact that compositions have been developed that simultaneously contain (C ₁₂ H ₂₅ -C ₁₄ H ₂₉ ) glyphosate (I) alkyl dimethylamine salt and 2,4-D (II) 2-ethylhexyl ether with an active substance ratio of I: II as (1.2-1.3): 1 with the following content of components, wt.%:

Alkyl dimethylamine salt of glyphosate 49.9-57.8

2,4-D 2-ethylhexyl ether 21-22,4

Solvent 4-12

Co-solvent The rest

As a solvent, glycerin is used; a co-solvent is either ethylene glycol or propanol or butanol.

Received herbicidal compositions represent 30% (by AI) ke They do not require the addition of surfactants, as The function of the emulsifier is performed by glycosate alkyldimethylamine salt, which has surface-active properties.

The invention is illustrated by the following examples.

Example 1. In a reactor with a stirrer and filled with 5 g of glycerol and 20.9 g of ethylene glycol, 53.1 g of DMAA glyphosate salt are obtained. The reaction mass is stirred for 1.5-2 hours at 50-55 ° C. To the resulting salt was added 21 g of 2,4-D 2-ethylhexyl ether and stirred for another 30 minutes. As a result of mixing, a uniform liquid is obtained. According to GOST 16291-79, a 2% working solution is prepared and kept in a sump for 4 hours. The working solution is stable.

Example 2. Analogously to example 1 receive a composition of the following composition, wt.%:

DMAA glyphosate salt 53.1

2,4-D 21-ethylhexyl ether

Glycerin 8

Ethylene Glycol 17.9

Example 3. Analogously to example 1 receive a composition of the following composition, wt.%:

DMAA glyphosate salt 54.2

2,4-D 21-ethylhexyl ether

Glycerin 7

Ethylene glycol 17.8

Example 4. Analogously to example 1 receive a composition of the following composition, wt.%:

DMAA glyphosate salt 55.4

2,4-D 2-ethylhexyl ether 21.7

Glycerin 5

Ethylene Glycol 17.9

Example 5. Analogously to example 1 receive a composition of the following composition, wt.%:

DMAA glyphosate salt 57.8

2,4-D 2-ethylhexyl ether 21.7

Glycerin 4

Ethylene glycol 16.5

Example 6. Analogously to example 1 receive a composition of the following composition, wt.%:

DMAA glyphosate salt 52.2

2,4-D 21-ethylhexyl ether

Glycerin 12

Propanol 14.8

Example 7. Analogously to example 1 receive a composition of the following composition, wt.%:

DMAA glyphosate salt 53.1

2,4-D 21-ethylhexyl ether

Glycerin 10

Propanol 15.9

Example 8. Analogously to example 1 receive a composition of the following composition, wt.%:

DMAA glyphosate salt 55.4

2,4-D 21-ethylhexyl ether

Glycerin 10

Propanol 13.6

Example 9. Analogously to example 1 receive a composition of the following composition, wt.%:

DMAA glyphosate salt 53.1

2,4-D 2-ethylhexyl ether 22.4

Glycerin 10

Butanol 14.5

Example 10. Analogously to example 1 receive a composition of the following composition, wt.%:

DMAA glyphosate salt 49.9

2,4-D 2-ethylhexyl ether 21.9

Glycerin 10

Butanol 18.2

Example 11 (beyond). Analogously to example 1 receive a composition of the following composition, wt.%:

DMAA glyphosate salt 55.4

2,4-D 2-ethylhexyl ether 19.3

Glycerin 10

Propanol 15.3

The composition obtained at a ratio of AI 1.5: 1. After repeated freezing and thawing, it does not pass the stability test.

Example 12 (beyond). Analogously to example 1 receive a composition of the following composition, wt.%:

DMAA glyphosate salt 44.7

2,4-D 2-ethylhexyl ether 25.9

Glycerin 8

Butanol 21.4

Example 13 is a prototype. Analogously to example 1 receive a composition of the following composition, wt.%:

Tetramethylmethylenediamine

glyphosate salt 14

Tetramethylmethylenediamine

salt 2,4-D 19

Tetramethylmethylenediaminoxalate

monoethanolamine 30

Alkyl Sulfate Salt 10

Water 27

The composition and properties of the herbicide formulations are presented in table 1. As you can see, all formulations after stability tests (multiple hardening and thawing) are stable, with the exception of example 11 (the ratio of the active substances of glyphosate and 2,4-D as 1.5: 1).

The results of field experiments presented in Table 2 indicate that the composition with the ratio of AI 1: 1 (example 12) is comparable in herbicidal activity with glyphene. The proposed herbicidal compositions (examples 1-10) with a ratio of d. glyphosate and 2,4-D as (1,2-1,3): 1 in terms of herbicidal activity significantly surpass glyphene, providing at a consumption rate of 3 kg / ha almost complete destruction of both annual and perennial weeds. The data obtained convincingly confirm the real possibility of introducing the proposed compounds in agricultural practice and in non-agricultural areas (roadsides, power lines, railways, pipelines, etc.).

Claims (1)

A herbicidal composition comprising an amine salt of N-phosphonomethylglycine, a derivative of 2,4-dichlorophenoxyacetic acid and a solvent, characterized in that it contains (C ₁₂ H ₂₅ -C ₁₄ H ₂₉ ) -alkyl dimethylamine salt (I ), and as a derivative of 2,4-dichlorophenoxyacetic acid - 2-ethylhexyl ester of 2,4-dichlorophenoxyacetic acid (II) with the ratio of active substances I: II as (1.2-1.3): 1, and as a solvent - glycerin and additionally a co-solvent - ethylene glycol, or propyl alcohol, or butyl new alcohol in the following components, wt.%: (C ₁₂ H ₂₅ -C ₁₄ H ₂₉ ) -alkyldimethylamine salt N- phosphonomethylglycine 49.9-57.8 2,4-Dichlorophenoxyacetic 2-ethylhexyl ester acid 21-22,4 Glycerin 4-12 Ethylene glycol, or propyl alcohol, or butyl alcohol The rest is up to 100

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