A liquid composition

 

The invention concerns a composition suspa-emulsion used in agriculture. It includes first and second compatible components. The first component acts primarily as an emulsifier oil and the second as the dispersant particles. The second component acts primarily as a dispersant particles and secondarily as emulsifier oil. The first component consists of one or more compounds of the form R1(Y)aH. the Second component consists of one or more compounds of the form [R2(Z)b]cA, where R1and R2that may be the same or different, represent substituted fenoxaprop; Y and Z, which may be identical or different, represent-chr3chr4-O-, where R3and R4that may be the same or different, represent hydrogen or methyl; a is from 7 to 40; b is from 7 to 40; C = 1 or 2; And represents a phosphate or sulfate radical, or their salts, the concentration of the first component is more than 70 g/L. the Invention allows to prepare stable suspa-emulsion containing the active ingredients and components and containing significant amounts of oil compensabon their preparation. In particular, the invention relates to a liquid composition that contains a phase emulsions and phase of suspended solids. Specifically, but not exclusively, the invention relates to compositions for use in agriculture such as pesticidesautorises recipes, such as herbicides, fungicides and/or insecticides, where these formulations are diluted with water to agricultural workers before applying to the pests or to focus their habitat.

The creation of stable emulsions that contain at least one solid component, the so-called ASPO-emulsions, represent a considerable challenge for chemists responsible for the preparation of formulations. This problem increases with the number and complexity of components. The compositions suspa-emulsions are particularly sensitive to the forces to shear loads during production, formulation, and upon dilution and mixing of the formulation with water to agricultural workers. These forces accelerate heterologously caused by agglomeration of solid particles with droplets phase of the emulsion. Heterologously leads to poor stability during storage and may cause clogging of filters nozzle during the spraying of the diluted formulation of agricultural Raboche often required to improve move the active ingredient into the plant.

The task for making the formulation chemist is choosing the right dispersants and emulsifiers to obtain a stable system. Typically, this is accomplished by coating the solid particles of the polymer dispersant, forming a spatial layer around each particle; then the mixture emuleret oil component with an emulsifier. The emulsion may be stabilized thermodynamically or kinetically. Kinetically stable system ultimately will be combined in a single oil phase, it usually requires about 2 to 3 years, i.e. the duration of the shelf life of the product. Thermodynamically stable system spontaneously form a microemulsion/solute system, when mixed together in exact proportions.

Thus, attempts to create stable formulations suspa-emulsions are typically included the use of polymeric dispersant to keep the droplets and particles are physically separated. However, these attempts have not found wide application because, although they can be applied to a special, simple systems, they are not applicable to more complex suspa-emulsions. Therefore, the aim of the present invention is to provide a composition suspa-emulsion, the cat is uchumi in the first and second compatible components the first component acts primarily as an emulsifier for the oil and secondarily as a dispersant particles, and the second component acts first as dispergator particles and the second as the emulsifier oil, wherein i) the first component consists of one or more compounds of the formula R1(Y)aH; (ii) the second component consists of one or more compounds of the formula [R2(Z)b]cA; where R1and R2that may be the same or different, represent substituted fenoxaprop; Y and Z, which may be identical or different, represent-chr3chr4-O-, where R3and R4that may be the same or different, represent hydrogen or methyl; a is from 7 to 40; b is from 7 to 40; C is 1 or 2; and a represents a phosphate or sulfate radical, or their salt, and where the concentration of the first component is more than 70 g/liter.

The term suspa emulsion, as is known from the prior art, describes formulations, where the continuous phase is an aqueous emulsion and suspended particles. The emulsion can be an emulsion water in oil, where the oil phase is the main component of okretanje finds applicability in both systems, however, in particular, is especially suitable for use in suspa-emulsions water-in-oil.

In this description, unless the context requires a different interpretation, you must understand that the word "comprise" or variations such as "comprises" or "comprising" means including articulated integer or group of integers but not the exclusion of any other integer or group of integers, including the stage of the way.

Our invention enables to prepare stable suspa emulsion containing a variety of active ingredients and other components. Therefore, it detects more General and wide applicability compared with the formulations of the prior art. Moreover, this invention enables to prepare formulations containing much greater quantities of oil components than hitherto possible. It was found that the formulations prepared according to the invention are able to withstand conditions of high shear, usually experienced during the production and application of pesticides on crops. Comparable systems that don't use our invention, lead to heterologously. Providing the TAC prior art and provides cooking recipes chemist new technical knowledge, which will find General applicability.

Found that good performance is achieved when the quantity of the second component is from 15 to 50 g/liter, especially between 25 and 35 g/liter.

Found that our invention works especially well when the recipe contains ionic emulsifier. Preferred are salts alkylbenzenesulfonates, especially calcium dodecylbenzenesulfonate.

Surprisingly it was found that suspa-emulsion when they are prepared according to the present invention, in the form of an emulsion, where the division surface water/oil difficult to distinguish. These so-called microemulsions are a feature of our invention, especially when the total concentration of the first component and ionic emulsifier exceeds 150 g/liter.

Discovered that improved performance characteristics are achieved when R1and/or R2replaced two or three 1-phenylethylene groups.

Next, we discovered that a and b, which may be the same or different, preferably equal to from 10 to 25, especially from 16 to 20.

The invention also includes the compounds where the second component is a salt, preferably a salt of sodium, potassium or triethanolamine. OST included a compound of the formula R1(Y)aH, where R1represents trisamino fenoxaprop, substituted 1-phenethyl radical in positions 2, 4 and 6, Y is-CH2CH2"Oh - and while nominally equal to 16. In the prior art, this connection is known as the ethoxylated tridirectional (16 moles E. O.). Typically, this compound exists as a mixture of similar compounds.

Particularly preferably, the second component consisted of a salt of triethanolamine and the compounds of formula [R2(Z)b]cA, where R2represents trisamino fenoxaprop, substituted 1-phenethyl radical in positions 2, 4 and 6, Z represents-CH2CH2-O-, b is nominally equal to 20, C is 1 and a is a phosphate. In the prior art, this connection is known as the ethoxylated muistiinpanoista (20 moles E. O.). Typically, this compound exists as a mixture of similar compounds, in particular with similar compounds, where C is equal to 2.

The invention finds application particularly in the technical field of formulations of pesticides, where many active ingredients show low solubility both in water and in organic solvents. Such active ingredients include the manufacture of the compositions, composed of two or more of the active ingredient, particularly where one ingredient is a water-insoluble solid with a high melting point, and the other ingredient is dissolved in water-immiscible liquid such as rapeseed oil or mineral oil, such as prochloraz.

Examples
Hereinafter the invention will be illustrated only for the purpose of example, with reference to the following examples.

Example 1
The influence of non-ionic emulsifier and dispersant on the stability of the composition.

Compounds 1, 2 and 3 were prepared according to the following method.

Preparation
Ingredients 1 to 5 were mixed in proportions shown in table 1, to obtain a solution. Ingredients 6 to 12 were mixed in proportions shown in table 1, and razmelchite in a ball mill until the average particle diameter of fluquinconazole was not equal to 2 microns. Then both groups of ingredients mixed to obtain the resulting composition. As can be seen from table 1, the ingredients of each formulation remain constant except ingredients 4 and 10.

Compound I is a compound of formula R1(Y)andN, where R1represents trisamino fenoxaprop, substituted 1-penilee equipment this connection is known as the ethoxylated tridirectional (16 moles E. O.). Typically, this compound exists as a mixture of similar compounds.

The compound of formula II is a salt of triethanolamine and the compounds of formula [R2(Z)b]withAnd where R2represents trisamino fenoxaprop, substituted 1-phenethyl radical in positions 2, 4 and 6, Z represents-CH2CH2-O-, b is nominally equal to 20, C is 1 and a is a phosphate. In the prior art, this connection is known as the ethoxylated muistiinpanoista (20 moles E. O.). Typically, this compound exists as a mixture of similar compounds, especially with similar compounds, where C is equal to 2.

Test method
The stability of the formulations was tested using a device for spraying a laboratory scale, which was designed to simulate field conditions. Each of the diluted formulation was subjected to vigorous recycling for at least half an hour using a powerful circulation pump to simulate shear forces that would be expected in practice in the spray tank. Pre-weighed filter positioned in the bracket on the right side of the recirculation flow and the flow through the filter is regulated in such optura evaluated as unsuccessful if the recirculated had at least one of the following:
i) the weight of the residue on the filter was more than 0.02% of the initial weight used recipes,
ii) on the walls and bottom of the glass there was a significant increase in sludge
iii) on the walls of the glass was sticky trail from the stream,
iv) microscopic evaluation found that there was heterologously.

Considered all four criteria in determining how worked the recipe. The test results are shown in table 1.

The results show that prepared according to the present invention the formulation is resistant to heterologously.

Example 2
The effect of the concentration of Compound I (nonionic emulsifier) and Compound II (dispersant) on the stability of the formulation.

Recipe from 4 to 10 were prepared according to the method of obtaining described in example 1 in the proportions shown in table 2. The proportions shown in grams. Table 2 also shows the results of the tests are evaluated using the same criteria as in example 1.

The results show that heterologously occurs when the number of connections I falls below 70 g/liter.


Claims

1. Suspa-emulsion composition including the La and, secondly, as a dispersant particles, and the second component operates, first, as a dispersant particles and, secondly, as an oil emulsifier, characterized in that i) the first component consists of one or more compounds of the formula

R1(Y)aH,

ii) the second component consists of one or more compounds of the form.

[R2(Z)b]cA,

where R1and R2that may be the same or different, represent substituted fenoxaprop;

Y and Z, which may be identical or different, represent-chr3chr4-O-, where R3and R4that may be the same or different, represent hydrogen or methyl;

and ranges from 7 to 40;

b is from 7 to 40;

C is 1 or 2;

Rather it represents a phosphate or sulfate radical,

or their salts, and where the concentration of the first component is more than 70 g/L.

2. Composition under item 1, where the second component is from 15 to 50 g/L.

3. Composition under item 1, where the second component is from 25 to 35 g/L.

4. The composition according to PP.1-3, which further comprises an ionic emulsifier.

5. The composition according to p. 4, where ionic emulsifier is a salt of alkylbenzenesulfonic the being and ionic emulsifier exceeds 150 g/L.

7. The composition according to any one of the preceding paragraphs, where R1and/or R2replaced two or three 1-phenylethylene groups.

8. The composition according to any one of the preceding paragraphs, where a and b, which may be the same or different, is from 10 to 25.

9. The composition according to any one of the preceding paragraphs, where a and b, which may be the same or different, is from 16 to 20.

10. The composition according to any one of the preceding paragraphs, where a is a phosphate.

11. The composition according to any one of the preceding paragraphs, where the second component is a salt of sodium, potassium or triethanolamine.

12. The composition according to any one of the preceding paragraphs, where the first component includes a compound of the formula

R1(Y)aH,

where R1represents trisamino fenoxaprop, substituted 1-phenethyl radical in positions 2, 4 and 6;

Y represents-CH2CH2-O;

and nominally equal to 16.

13. The composition according to any one of the preceding paragraphs, where the second component comprises a salt of triethanolamine and compounds of the formula

[R2(Z)b]cA,

where R2is trisamino fenoxaprop, substituted 1-phenethyl radical in positions 2, 4 and 6;

Z.

14. The composition according to any one of the preceding paragraphs, which contains at least one active ingredient, showing low solubility both in water and in organic solvents.

 

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