KR101367258B1 - Herbicide with rapid action and slow release - Google Patents

Abstract

The present invention relates to a herbicide having both fast-acting and slow-release properties, and more particularly, to a herbicide having both a contact component and a transition component and having both fast-acting and slow-release properties. To this end, the present invention is a herbicide having both fast-acting and sustained-release properties, including a fast-acting contact herbicide component and a fast-acting herbicide component, and a polyoxyethylene cocoamine and a polyoxyethylene cocoamine as a surfactant for the herbicide component. It is a herbicide characterized by including oxyethylene alkyl esters.

Description

Herbicide with both fast and slow action {Herbicide with rapid action and slow release}

The present invention relates to a herbicide having both fast-acting and slow-release properties, and more particularly, to a herbicide having both a contact component and a transition component and having both fast-acting and slow-release properties.

Non-selective herbicides that control weeds non-selectively can be divided into two types. When the drug is sprayed on the weeds because there is a contact component, there is a non-selective herbicide whose main component of the herbicide is to contact the surface of the weed leaves or stems and kill the leaves or stems. It shows the immediate effect. On the other hand, when the drug is sprayed on the weeds because of the transitional component, there are non-selective herbicides whose main components of the herbicide are absorbed through the pore of the leaves of the weeds and then transferred to the roots to show the herbicidal effect. Herbicidal effect Shows sustained effect. Non-selective herbicides, which exhibit fast-acting properties, are mainly composed of paraquadichloride and glufosinate ammonium. Typical non-selective herbicides that exhibit slow-release properties are glyphosate IP and glyphosate ammonium. Are sold separately.

In the case of fast-acting herbicides, the effect of the fast-acting herbicide can be seen immediately after spraying the drug, but the effect of the short-lived herb occurs when the weeds occur again. The duration of drug efficacy is long, but the drug is effective after a long time after spraying the drug, which causes difficulties in tillage. Therefore, in order to reduce these inconveniences, the users of farmers had to purchase fast-acting herbicides and slow-acting herbicides, spraying fast-acting herbicides, and then spraying slow-acting herbicides again.

In addition, in the case of non-selective herbicides, the use of a surfactant to help each of the main components penetrate the leaf surface is essential in order for the main ingredient to maximize the efficacy, and almost all non-selective herbicides add a special surfactant. . In other words, the surfactant that enhances the fast-acting effect and the surfactant that enhances the sustained-release effect are chemically different and each surfactant must be added at the same time to develop a product having two effects. However, when two kinds of surfactants are added at the same time in product development, there is a problem of discord between the surfactants, and a problem of disagreement between the main components of the pesticide and the other's surfactants. And so on. So far, it has been difficult to develop a non-selective herbicide that has both fast and slow-release effects at the same time.

The present invention aims to solve the above problems and to develop a non-selective herbicide mixture having both fast-acting and slow-release effects.

To this end, the present invention is a herbicide having both fast-acting and sustained-release properties, including a fast-acting contact herbicide component and a fast-acting herbicide component, and a polyoxyethylene cocoamine and a polyoxyethylene cocoamine as a surfactant for the herbicide component. It is a herbicide characterized by including oxyethylene alkyl esters. It is preferable to contain 150-400 weight part of polyoxyethylene cocoamine with respect to 100 weight part of said polyoxyethylene alkyl esters, It is preferable that the said polyoxyethylene alkyl ester has C12-C14, The said polyoxyethylene alkyl ester It is preferable that cloud point is 28-38 degreeC, and HLB is 10-14. Moreover, in this invention, it is preferable that the said contacting herbicide component which has fast-acting property is glyphosinate ammonium, and the transitional herbicide component which has slow-release property is glyphosate IPA.

It is very convenient and economical to use because it is possible to save the hassle of separately spraying separate products to achieve fast and sustained effectiveness simultaneously.

The present invention relates to a herbicide having both fast-acting and slow-release properties, and more particularly, to a herbicide having both a contact component and a transition component and having both fast-acting and slow-release properties.

In order to derive the present invention, first, a formulation test was conducted by mixing a predetermined amount with two pesticide ingredients showing fast-acting and sustained-release effects using existing surfactants used in conventional non-selective herbicide products. Among them, biological efficacy tests were conducted on products with stability, but they were insufficient. Thus, it has been found that this is not easy to achieve through a combination of conventional surfactants suitable for conventional slow-release and fast-acting herbicide components.

In this process, the combination of a polyoxyethylene alkyl ester surfactant and a polyoxyethylene cocoamine surfactant, which is one of the polyoxyethylene fatty acid amines that have been used in part for conventional slow-release products, has excellent results in terms of stability and efficacy. Could get In addition, the present invention was completed by performing experiments for determining the optimum mixing ratio.

Non-selective herbicide refers to a herbicide that sprays drugs to kill all weeds non-selectively. Representative non-selective herbicides currently available in Korea are glofosinate ammonium, glyphosate IP, glyphosate ammonium, Glyphosate potassium, paraquadichloride and the like. According to the time when the medicinal effect is exerted, it is divided into fast and sustained release, and the fast-acting components include glofosinate ammonium and paraquadichloride. Potassium and the like.

It is preferable to include 150 to 400 parts by weight of polyoxyethylene cocoamine with respect to 100 parts by weight of the polyoxyethylene alkyl ester, but if too little polyoxyethylene cocoamine is used, there is a problem of poor sustainability, It doesn't work and you don't have to use more than you need. It is preferable that polyoxyethylene alkyl ester is C12-C14, cloud point is 28-38 degreeC, and it is preferable that HLB is 10-14. More preferably, the viscosity of the polyoxyethylene alkyl ester is about 45 to 55, and the HLB (hydrophile-lipophile balance) is about 11 to 13 is appropriate.

Hereinafter, the present invention will be described in more detail based on the following examples. It should be noted, however, that the following examples are for illustrative purposes only and are not intended to limit the scope of the present invention. The present invention is not limited to the following examples. Will be apparent to those skilled in the art to which the present invention pertains.

<Examples 1 to 4>

Among the non-selective herbicides on the market, most of the non-selective herbicides were selected, such as glofosinate ammonium and glyphosate IPA. For fast-acting properties, surfactants of alcohol ethoxylate monoether secondary sulfuric salts (trade name: ZYBIEST; Surfactant A) is added, and in the case of sustained release, a surfactant (trade name: NKD20A; surfactant B) in which polyoxyethylene cocoamines and polyoxyethylene tallowamines are mixed is used.

Experiments were conducted to see if the object of the present invention could be achieved by mixing the surfactants currently used according to their respective properties. Considering the price and efficacy of the product, the formulation was tested with 66 g of glufosinate and 8.4 g of glyphosate IP in the product. In order to enhance the efficacy of the main ingredients, each product was added with or simultaneously with the trademark GYBISTINE surfactant and the brand name NKTDI20A, and the physical stability and biological effects of each product were tested. . Table 1 shows the contents of the examples.

Example 1 Example 2 Example 3 Example 4 Glyphosate IP 66 66 66 66 Glyphosinate Ammonium 8.4 8.4 8.4 8.4 Surfactant A 3.0 3.0 5 Surfactant B 15 15 15 water 22.6 10.6 7.6 5.6

In order to test the stability, the examples were placed in a thermostat at 40 ° C., and after 2 weeks, the stability of the product, such as layer separation, entanglement, and precipitation, was confirmed.

Example 1 Example 2 Example 3 Example 4 Layer separation none none has exist has exist Tangled phenomenon has exist none has exist has exist Sedimentation none none none none

In addition, a biological efficacy test was conducted for Example 2 having good stability.

Biological effect Fast-acting Ji Hyo Sung Annual weeds Perennial weeds Annual weeds Perennial weeds Inadequate Inadequate Great Great

As a result, when the brand name GWIBST was added, the surfactant was reacted with Glyphosate IP, which is another main ingredient, and the product was entangled. When the product was made by adding this surfactant to the brand name NKTD20, which is an activator, the product was stable but showed no fast-acting effect. In conclusion, in order to develop a product that exhibits both fast-acting and slow-release properties, it was found that other than the surfactants used in the conventional products were needed.

<Examples 5 to 8>

Glufosinate ammonium was 66 g, glyphosate IP was 8.4 g, and 3.0 g of polyoxyethylene alkyl ester surfactant (surfactant C) was added and filled with water to adjust 100 g (Example 5). 3.0 g of each of the other surfactants D (component name: cocoacyltrimethyl ammonium chloride), surfactant E (component name: polyoxyethylene polyoxypropylene copolymer), and surfactant F (component name: polyoxyethylene nonylphenol) Examples 6 to 8 carried out were put in the same manner.

Example 5 Example 6 Example 7 Example 8 Glyphosate IP 66 66 66 66 Glyphosinate Ammonium 8.4 8.4 8.4 8.4 Surfactant C 3.0 Surfactant D 3.0 Surfactant E 3.0 Surfactant F 3.0 water 22.6 22.6 22.6 22.6

In order to test the stability, the above examples were placed in a thermostat, and after 2 weeks, the stability of layer separation, entanglement, and precipitation phenomenon of the product was confirmed.

Example 5 Example 6 Example 7 Example 8 Layer separation none none has exist none Tangled phenomenon none none has exist none Sedimentation none none none none

In addition, except for Example 7, which is not stable, the biological drug test was performed again.

Biological effect Fast-acting Ji Hyo Sung Annual weeds Perennial weeds Annual weeds Perennial weeds Example 5 Great Great Inadequate Inadequate Example 6 usually Inadequate usually Inadequate Example 8 Inadequate Inadequate Inadequate Inadequate

As a result, in the case of Example 5, sustainability was inadequate. Therefore, although the surfactant which can reinforce the sustainability and looked for the surfactant which also has the stability of a product was found, polyoxyethylene cocoamines were suitable. Examples 9 to 13 were tested to determine the optimal ratio of these combinations.

<Example 9 to Example 13>

Glufosinate ammonium is 66g, glyphosate IP is 8.4g, 3.0g of polyoxyethylene alkyl ester surfactant (surfactant C) is added, and 4, 6, 8, 10, 12 g of polyoxyethylene cocoamines are added. Put and tested. To make 100 g, the remaining ingredients were added water.

Example 9 Example 10 Example 11 Example 12 Example 13 Glyphosate IP 66 66 66 66 66 Glyphosinate Ammonium 8.4 8.4 8.4 8.4 8.4 Surfactant C 3.0 3.0 3.0 3.0 3.0 Polyoxyethylene cocoamine 4.0 6.0 8.0 10.0 12.0 water 18.6 16.6 14.6 12.6 10.6

In order to test the stability, the above examples were placed in a thermostat, and after 2 weeks, the stability of layer separation, entanglement, and precipitation phenomenon of the product was confirmed.

Example 9 Example 10 Example 11 Example 12 Example 13 Layer separation none none none none none Tangled phenomenon none none none none none Sedimentation none none none none none

The stability test showed that the combination of the two surfactants was very good in physical stability.

On the other hand, the biological efficacy was tested for the above examples.

Biological effect Fast-acting Ji Hyo Sung Annual weeds Perennial weeds Annual weeds Perennial weeds Example 9 Good Good usually Inadequate Example 10 Good Good usually usually Example 11 Good Good Good Good Example 12 Good Good Good Good Example 13 Good Good Good Good

As a result, it can be said that the combination of the surfactant of the present invention is suitable for the herbicide having both quick and slow release effects. However, although Example 9 is not bad, there are some parts which fall somewhat in terms of sustainability. Preferably, the polyoxyethylene cocoamine is preferably 150 parts by weight or more based on 100 parts by weight of the polyoxyethylene alkyl ester surfactant.

Claims (5)

A herbicide having both fast-acting and slow-release properties, comprising a quick-acting contact herbicide component and a fast-acting transition herbicide component, and as a surfactant for the herbicide component, polyoxyethylene cocoamines and polyoxyethylene alkyl esters Herbicides characterized in that it comprises a. The method of claim 1,
A herbicide comprising 150 to 400 parts by weight of polyoxyethylene cocoamine based on 100 parts by weight of the polyoxyethylene alkyl ester.
The method of claim 1,
Polyoxyethylene alkyl ester is a herbicide characterized by having 12 to 14 carbon atoms. The method of claim 1,
The polyoxyethylene alkyl ester is a herbicide characterized in that the cloud point is 28 to 38 ℃, HLB is 10 to 14. The method according to any one of claims 1 to 4,
The quick-acting contact herbicide component is glyphosinate ammonium and the slow-acting herbicide component is glyphosate IPA.