DE10058878A1 - Microcapsule suspension for agrochemical use comprises microcapsule envelope formed from tolylene diisocyanate and 4,4'-methylene-bis-(cyclohexyl-isocyanate) mixtures by reaction with diamine or polyamine - Google Patents

Abstract

Microcapsule suspensions in which the microcapsule envelope is composed of reaction products from mixtures of tolylene diisocyanate and 4,4'-methylene-bis-(cyclohexyl-isocyanate) with at least one diamine and/or polyamine are new. The microcapsule suspensions comprise: (A) a particulate disperse phase comprising microcapsules having: (a) an envelope composed of reaction products from mixtures of tolylene diisocyanate and 4,4'-methylene-bis-(cyclohexyl-isocyanate) with at least one diamine and/or polyamine; and (b) a filling comprising: (i) at least one solid agrochemical comprising a nicotinyl, pyrethroid. thiazole or phosphoric acid insecticide and/or an azole fungicide and/or a triazolinone, benzonitrile or phenyluracil herbicide; (ii) at least one liquid, aliphatic hydrocarbon boiling at above 160 deg C; (iii) at least one oil-soluble, polymeric dispersant; and optionally; and (iv) one or more agrochemicals which are liquid at room temperature; and (B) a liquid, aqueous phase optionally containing additives and/or one or more non-encapsulated agrochemicals which are liquid at room temperature. An Independent claim is also included for the preparation of the microcapsule suspension.

Description

The present invention relates to new microcapsule suspensions, a method for their manufacture and their use for the application of agrochemical Active substances.

Microcapsule formulations have already become known in the capsules Suspensions of solid agrochemical substances in organic solutions contain agents or liquid agrochemical active ingredients (cf. WO 95-13 698). A disadvantage of these preparations is that the release of the microencapsulated active ingredients do not always meet the requirements of practice enough. In addition, creaming occurs when these formulations are stored sedimentation.

New microcapsule suspensions have now been found, consisting of

• A) a particulate, disperse phase of microcapsules, the shells of which are reaction products of
  • - Mixtures of tolylene diisocyanate and 4,4'-methylene bis (cyclo hexyl isocyanate) of the formula
    With
  • - At least one diamine and / or polyamine
  acts,
  and
  the as capsule filling
  • - At least one solid agrochemical active ingredient from the group
    the insecticidal nicotinyls,
    the insecticidally active pyrethroids,
    the insecticidal thiazole derivatives,
    the insecticidally active phosphoric acid derivatives,
    the fungicidally active azoles,
    the herbicidally active triazolinones or benzonitriles and / or
    the herbicidally active phenyluracile,
  • at least one liquid, aliphatic hydrocarbon with a boiling point above 160 ° C.,
  • - At least one oil-soluble, polymeric dispersant and
  • - optionally one or more agrochemical active ingredients which are liquid at room temperature
  contain,
  and
• B) a liquid, aqueous phase, in addition to water
  • - optionally additives and
  • optionally one or more further agrochemical active ingredients which are solid at room temperature in non-encapsulated form
  contains.

Furthermore, it was found that microcapsule suspensions according to the invention can be produced by:

• a) in a first step a finely divided suspension
  • - At least one solid agrochemical active ingredient from the group
    the insecticidal nicotinyls,
    the insecticidally active pyrethroids,
    the insecticidal thiazole derivatives,
    the insecticidally active phosphoric acid derivatives,
    the fungicidally active azoles,
    the herbicidally active triazolinones or benzonitriles and / or
    the herbicidally active phenyluracile,
  • at least one liquid, aliphatic hydrocarbon with a boiling point above 160 ° C.,
  • - At least one oil-soluble, polymeric dispersant and
  • - A mixture of tolylene diisocyanate and 4,4'-methylene bis (cyclohexyl isocyanate) of the formula
    
  • and optionally one or more agrochemical active ingredients which are liquid at room temperature,
  in an aqueous phase
  • - Polyvinyl alcohol optionally mixed with gum arabic and
  • - Water
  dispersed,
• b) at least one of the resulting mixture in a second step Adds diamine and / or polyamine and  
• c) the microcapsule suspension obtained optionally in a third step
  • - with additives and
  • - optionally with one or more further agrochemical active ingredients, solid at room temperature, in non-encapsulated form
  transferred.

Finally, it was found that the microcapsule suspensions according to the invention very good for applying the agrochemical active ingredients contained on plants and / or their habitat are suitable.

It can be described as extremely surprising that the micro Capsule suspensions better for application of the agrochemical effect contained substances are suitable as the constitutionally most similar, known preparations. Above all, it is unexpected that there will be many of them Isocyanates, especially mixtures of tolylene diisocyanate and 4,4'-methylene-bis- (Cyclohexyl isocyanate) of the formula (1) is particularly good for producing micro Have capsule suspensions with the desired properties used.

The microcapsule suspensions according to the invention are characterized by a number from advantages. So they are able to control the active components release for a longer period in the amount required. It is also favorable that the microcapsule suspensions according to the invention have high stability and do not cream or sediment even after long storage.

The microcapsule suspensions according to the invention are those in the shaped, disperse phase and the components contained in the aqueous phase characterized.  

The capsule shells of the microcapsules according to the invention are Reaction products of the isocyanates and amines mentioned under (A).

Both toluene diisocyanate and 4,4'-methylene bis (cyclohexyl isocyanate) are known.

Amines of the groups listed under (A) are preferably aliphatic and alicyclic primary and secondary diamines and polyamines. May be mentioned as examples
Ethylenediamine- (1,2), diethylenetriamine, triethylenetetramine, bis- (3-aminopropyl) amine, bis- (2-methylaminoethyl) methylamine, 1,4-diamino-cyclohexane, 3-amino-1-methylaminopropane, N- Methyl bis (3-aminopropyl) amine, 1,4-diamino-n-butane and 1,6-diamino-n-hexane.

Diethylene triamine is very particularly preferred.

These diamines and polyamines are known compounds of organic chemistry.

One or more may be present in the microcapsule suspensions according to the invention contain solid, agrochemical active substances from the groups specified under (A) his.

Examples of insecticidally active nicotinyls are imidacloprid, thiacloprid, Called thiamethoxam and acetamiprid.

Betacyfluthrin, Cyper are examples of insecticidally active pyrethroids called methrin, transfluthrin and lambda-cyhalothrin.

The active ingredient of the formula is an example of an insecticidally active thiazole derivative

called.

Azinphos is an example of an insecticidally active phosphoric acid derivative called methyl.

Examples of fungicidally active azoles are tebuconazole and 2- [2- (1-chloro cyclopropyl) -3- (2-chlorophenyl) -2-hydroxypropyl] -2,4-dihydro- [1,2,4] triazole-3- called thion.

Examples of herbicidally active triazolinones are sodium propoxycarbazone, Flucarbazone sodium and Amicabazone called.

Dichlobenil may be mentioned as an example of a herbicidally active benzonitrile.

The substances of the formula are examples of herbicidally active phenyluracils

mentioned, wherein the substituents R ¹ , R ² and R ^{3 have} the meanings given below.

The microcapsule suspension according to the invention contain inside the capsules at least one liquid, aliphatic hydrocarbon with a boiling point above 160 ° C. Such hydrocarbons are preferred Paraffin oils and mineral oils come into consideration. Examples include those under Designations Norpare (Exxon), Isopare (Exxon) and Exxsol (Exxon) known paraffin oils and also under the name BP Enerpar T 017 (Fa. British Petrol) mineral oil on the market.

The microcapsule suspensions according to the invention contain inside the capsules at least one oil-soluble, polymeric dispersant. As examples of dispersants of this type are those under the names Atlox LP6 (Unigema), Agrimer AL 22 (from ISP Investments) and Hordaphos 215 (from Clariant) are known Called products.  

In addition, the microcapsule suspensions according to the invention can be found inside the Capsules also one or more agrochemical liquid at room temperature Contain active ingredients.

The particles of the disperse phase have an average particle size, which in the Generally between 1 and 30 microns, preferably between 3 and 15 microns.

The aqueous phase of the microcapsule suspensions according to the invention consists of Essentially water. It can also contain additives such as emulsifiers, Dispersants, polyvinyl alcohol, mixtures of polyvinyl alcohol and rubber arabicum, defoamers, preservatives and thickeners.

The aqueous phase of the microcapsule suspensions according to the invention can be which also includes one or more agrochemical active ingredients that are solid at room temperature contained in non-encapsulated form.

The emulsifiers and dispersants used are preferably nonionic ones and anionic substances with surface-active properties.

Examples of non-ionic emulsifiers are those under the names Pluronic PE 10 100 (from BASF) and Atlox 4913 (from Uniqema) known products called. Tristyrylphenol ethoxylates are also suitable. As examples of Anionic emulsifiers are Baykanol SL (= Condensation product of sulfonated ditolyl ether with formaldehyde) in Commercial product from Bayer AG called as well as phosphated or sulfated tristyryl phenol ethoxylates, with Soprophor SLK and Soprophor 4D 384 (from Rhodia) may be specifically mentioned.

Polyvinyl alcohol or mixtures of polyvinyl alcohol with gum arabic can be included as protective colloids.  

As thickeners, all are usually used in plant treatment for this purpose substances that can be used. Kelzan® (thixotropic ver thickener based on xanthan), silicas and attapulgite.

As a preservative, all are commonly used in plants for this purpose substances present in the treatment. Cited as examples be Preventol® (Bayer AG) and Proxel®.

As defoamers, everyone usually comes into plant treatment for this purpose substances suitable for use in agents. Silane derivatives are preferred, such as poly-dimethylsiloxanes and magnesium stearate.

As agrochemical active ingredients in the aqueous phase in non-encapsulated form fungicides, insecticides and herbicides may be present are solid at room temperature.

Preferred fungicidal active ingredients are carpropamide, fenhexamide, iprovalicarb, Triadimefon, triadimenol, bitertanol, dichlobutrazole, tebuconazole, difenoconazole, Cyproconazole, flutriafol, hexaconazole, myclobutanil, bromuconazole, epoxicona zol, fenbuconazole, ipconazole, fluquinconazole, triticonazole, imibenconazole, ima zalil, pencycuron, kresoxim-methyl, azoxystrobin, trifloxystrobin, probenazole, Isoprothiolane, Tricyclazole, Dicyclocymet and Phthalide.

The following are mentioned as preferred insecticidal active ingredients:
Azinphos-methyl, aminocarb, 2-sec-butyl-phenyl-methylcarbamate, carbaryl, carbofuran, isoprocarb, methiocarb, mexacarbate, nabam, nitrilacarb, beta cyfluthrin, imidacloprid and thiacloprid.

The following may be mentioned as preferred herbicidal active ingredients:
Metazachlor, Propachlor, Flufenacet and Metribuzin.

In the aqueous phase, the agrochemical active ingredients are not encapsulated Form, preferably contained in a ready-to-use formulation as a suspension.

The composition of the microcapsule suspensions according to the invention can be varied within a certain range. The proportion of the disperse, encapsulated phase in relation to the entire formulation is generally between 5 and 70% by weight, preferably between 45 and 50% by weight. Even within the disperse, encapsulated phase, the proportion of the individual constituents can be varied within a certain range. The concentrations are in the disperse phase

• - on the reaction product of mixtures of tolylene diisocyanate and 4,4'- Methylene bis (cyclohexyl isocyanate) with diamine and / or polyamine in generally between 1 and 12 wt .-%, preferably between 2 and 10% by weight,
• - on solid, agrochemical active ingredients generally between 10 and 90% by weight, preferably between 10 and 80% by weight,
• - Aliphatic hydrocarbon generally between 10 and 90% by weight, preferably between 30 and 70% by weight,
• - On oil-soluble, polymeric dispersants, generally between 1 and 15% by weight, preferably between 3 and 10% by weight and
• - on agrochemical active ingredients that are liquid at room temperature in general mean between 0 and 20% by weight, preferably between 0 and 10% by weight.

In the aqueous phase, the proportion of additives can be within a larger Range can be varied. The concentration of additives is related to the  total aqueous phase generally between 3 and 25 wt .-%, preferably between 5 and 20% by weight.

The proportion of agrochemical, not encapsulated active ingredients in the aqueous Phase can be varied within a wide range. That's the way it is Concentration of agrochemical active ingredients in relation to the entire aqueous Phase generally between 0 and 40 wt .-%, preferably between 0 and 30% by weight.

The following formulations may be mentioned as preferred microcapsule suspensions according to the invention, which each contain an agrochemical active substance both in the disperse phase within the microcapsules and in the aqueous phase:
Suspension with imidacloprid in microencapsulated form and carpropamide in the aqueous phase in the form of a suspension.
Suspension with imidacloprid in microencapsulated form and azinphos-methyl in the aqueous phase in the form of a suspension.
Suspension with betacyfluthrin in microencapsulated form and betacyfluthrin in the aqueous phase.

The microcapsule suspensions according to the invention are produced according to Microencapsulation procedure.

In general, the procedure is to start with a finely divided suspension

• - At least one optionally pre-ground, solid, agrochemical Active ingredient from the specified groups,  
• - At least one liquid, aliphatic hydrocarbon with a Boiling point above 160 ° C,
• - At least one oil-soluble, polymeric dispersant and
• - a mixture of tolylene diisocyanate and 4,4'-methylene-bis- (cyclohexyl- isocyanate) and
• - optionally one or more liquid at room temperature agrochemical active ingredients

by mixing the components.

The quantities of the individual components are chosen so that they are in the resulting disperse phase are present in the concentrations already mentioned were. The ratio of tolylene diisocyanate to 4,4'-methylene-bis- (Cyclohexyl isocyanate) of the formula (1) can be varied within a certain range. 1 part by weight of tolylene diisocyanate is generally between 0.3 and 2 parts by weight, preferably between 0.5 and 1.5 parts by weight of 4,4'-methylene bis- (cyclohexyl isocyanate).

The temperatures during the preparation of the suspension (= organic phase) can be varied within a certain range. Generally you work at temperatures between 10 ° C and 60 ° C, preferably between 20 ° C and 50 ° C.

Furthermore, an aqueous phase is produced by

• - Polyvinyl alcohol optionally mixed with gum arabic in
• - Water

stir in.

The quantities of the individual components are chosen so that they are present in the resulting disperse phase in the concentrations that already were called. The ratio of polyvinyl alcohol to rubber can arabic can be varied in a certain range. On 1 part by weight of poly vinyl alcohol is generally used between 0 and 10 parts by weight, preferably between 0 and 5 parts by weight of gum arabic.

Temperatures can also vary during the manufacture of the aqueous phase of a certain range can be varied. Generally you work at Temperatures between 20 ° C and 100 ° C, preferably between 30 ° C and 90 ° C.

The organic phase is then stirred or mixed vigorously dispersed aqueous phase.

For the preparation of the dispersions, all the appa customary for such purposes rate that generate strong shear forces. May be mentioned as an example Rotor-stator mixers and jet dispersers.

The temperatures can also be in one be during the preparation of the dispersions agreed range can be varied. Generally one works at temperatures between 10 ° C and 40 ° C, preferably between 10 ° C and 30 ° C.

The dispersion produced in the first step is in the second step of the invention according to the method with slow stirring with at least one diamine and / or polyamine and then until the end of the entering microver encapsulation reaction continued.  

In this case, all those diamines are preferably used as reaction components and polyamines, which are already in connection with the description of the Microcapsule suspensions according to the invention were mentioned as preferred.

When carrying out this second step of the method according to the invention can the ratio of isocyanate to amine component in a given Range can be varied. In general, 0.8 to 1 mol of isocyanate is used 1.5 equivalents of amine component. The quantities are preferably selected Isocyanate and amine so that equimolar amounts of isocyanate and amino groups available.

The reaction temperatures can be carried out in the second stage of the The inventive method varies within a certain range become. Generally one works at temperatures between 40 ° C and 80 ° C, preferably between 50 ° C and 70 ° C.

In the third step of the method according to the invention, the previously produced one Microcapsule suspension, if necessary, while stirring with additives and possibly with other solid, agrochemical active ingredients in not encapsulated form, the latter preferably in the form of suspensions ion concentrates are added.

Thickeners, preservatives, defoamers and Dispersant into consideration. Those substances which are preferably usable are: already in connection with the description of the micro according to the invention Capsule suspensions as preferred thickeners, preservatives, defoamers and dispersants have been mentioned. Here come as agrochemical active ingredients those in question already in connection with the description of the inventions microcapsule suspensions according to the invention as agrochemical constituents of the aq called phase.  

The temperatures can be carried out during the third step of the invention according to the method in turn varies within a certain range become. Generally one works at temperatures between 10 ° C and 50 ° C, preferably between 10 ° C and 40 ° C.

The process according to the invention is generally carried out under atmospheric pressure carried out.

Microcapsules according to the invention can be Prepare suspensions in quantities of around 500 ml without any problems. Is the preparation If larger amounts are desired, the process according to the invention is carried out for the purpose moderately continuously. To do this, you generally do that the organic phase and the aqueous phase from separate storage vessels with the help of two pumps together in the desired, precisely metered amount leads, then in a dispersing device using a rotor / stator Dispersed mixer, this dispersion continuously conducts and in another vessel by reacting with amine and the resulting microcapsule If necessary, suspension with additives and given if still with solid, agrochemical active ingredients, preferably in the form of commercially available suspension concentrates.

The microcapsule suspensions according to the invention are outstandingly suitable for Application of the agrochemical active ingredients contained on plants and / or their Habitat. They ensure the release of the active components in the desired quantity over a longer period of time.

The microcapsule suspensions according to the invention can either as such or can be used in practice after prior dilution with water. The Application is carried out according to customary methods, e.g. B. by casting, Ver inject or spray. However, it is also possible to remove the aqueous phase  distant and the remaining, free-flowing solid product according to usual methods to apply.

The amount of microcapsule suspensions according to the invention can be applied can be varied within a wide range. It depends on the respective agrochemical active ingredients and according to their content in the microcapsule Suspensions.

The invention is illustrated by the following examples.  

Manufacturing examples example 1 a) Organic phase

320 g of a finely ground suspension of 1534.4 g imidacloprid, 300 g Atlox LP6 and 1175.6 g mineral oil (PB Enerpar T 017) come with 16.4 g Tolylene diisocyanate and 12.4 g of 4,4'-methylene bis (cyclohexyl isocyanate) mixed with stirring at room temperature.

b) Aqueous phase

12.0 g of polyvinyl alcohol (Moviol 4-88) and 4 g of gum arabic with heating to 70 ° C and with stirring in 333.6 g demineralized Water dissolved. The solution is then cooled in an ice bath.

c) Microcapsule suspension

The organic phase and the aqueous phase are at room temperature in Ratio of 48: 52 in a total amount of 202 ml / min and promoted with a rotor-stator mixer at 20,000 revolutions per minute emulsified. The emulsion obtained is at temperatures below 20 ° C. with 20 g of a 50 weight percent solution of diethylenetriamine in Water was added, then with stirring to 55 ° C. within one hour heated and then stirred at 55 ° C for 20 hours. After cooling 0.8 g Preventol D2, 0.8 g Preventol D7, 30 g are brought to room temperature Baykanol SL and 44 g of a 2% by weight solution from Kelzan S (thickener based on xanthan) in water.

In this way, 800 g of a microcapsule suspension with a Imidacloprid content of 20 wt .-% and an average particle size of 11.4 µm.  

Example 2 a) Organic phase

1000 g of a finely ground suspension of 1016.26 g imidacloprid, 200 g Atlox LP6 and 783.74 g mineral oil (BP Enerpar T 017) come with 47.07 g Tolylene diisocyanate and 35.43 g of 4,4'-methylene bis (cyclohexyl isocyanate) mixed with stirring at room temperature.

b) Aqueous phase

12.5 g polyvinyl alcohol (Moviol 4-88) and 62.5 g gum arabic with heating to 70 ° C and with stirring in 1282.5 g demineralized Water dissolved. The solution is then cooled to room temperature.

c) Microcapsule suspension

The organic phase and the aqueous phase are at room temperature in Ratio of 48: 52 pumped into a reaction vessel and with a rotor-stator mixer at 20,000 revolutions per minute emulsified. The emulsion obtained is at a temperature of about 15 ° C mixed with a mixture of 27.5 g diethylenetriamine and 27.5 g water, then heated and stirred at 50 ° C. within one hour finally stirred at 50 ° C for 20 hours. After cooling to room The temperature will be 2.5 g Preventol D2, 2.5 g Preventol D7, 56.25 g Soprophor 4D 384, 56.25 g Pluronic PE 10 100 and 75 g of a 2% by weight Solution of Kelzan S (thickener based on xanthan) added in water.

This gives a microcapsule suspension with a Imidacloprid content of 18.44 wt .-% and an average particle size of 11.8 µm.  

Example 3

829.2 g of the microcapsule suspension according to Example 2 are stirred at room temperature with 712.4 g of a commercially available suspension concentrate
40% by weight of carpropamide,
7% by weight of emulsifiers and dispersants,
10% by weight of antifreeze, preservative and thickener as well
43% by weight consists of water,
and with
57.4 g of demineralized water mixed. A combination formulation of is obtained in this way

• - encapsulated imidachloprid (100 g / l) and
• - unencapsulated carpropamide (191 g / l)

with a density of 1.085 g / ml.  

Examples of use Example A Release of active ingredient

There is a defined amount of formulation that Imidacloprid as Contains active ingredient, suspended in 500 ml of water and then at room temperature leave. After 48 hours, 5 ml are removed and the filtered solid components. In the aqueous phase, the HPLC method determined the content of imidacloprid.

The test results are shown in the following table.  

Table A

Release of active ingredient

Example B Compatibility test

Each 12 g rice grains of the Kusabue variety are evenly distributed in 10 cm × 10 cm large bowls sown, the bottom of which is covered with soil up to a height of 4 cm is. Before covering the rice grains with a 1 cm high earth Layer 28 ml of formulation per bowl, which the respective attached Contain the given amount of active ingredient, by pouring over the entire area the same applied moderately.

After that, the bowls are placed in a chamber in which a temperature during the day of 24 ° C and at night a temperature of 15 ° C.

The plants are examined for damage 28 days after sowing. Ascertained become necrosis, yellowing, growth disorders and deformations. The The sum of all damages is expressed in percent. 0% means that none Damage occurs while 100% means that the plants are each Show all damage.

The preparations used, application rates of active ingredient and the test results nisse are shown in the following tables.  

Table B-1

Compatibility test

Table B-2

Compatibility test

Claims (6)

1. microcapsule suspensions consisting of

• A) a particulate, disperse phase of microcapsules, the shells of which are reaction products of
  • - Mixtures of tolylene diisocyanate and 4,4'-methylene bis (cyclohexyl isocyanate) of the formula
    With
  • - is at least one diamine and / or polyamine,
    and
    the as capsule filling
  • - At least one solid agrochemical active ingredient from the group
    the insecticidal nicotinyls,
    the insecticidally active pyrethroids,
    the insecticidal thiazole derivatives,
    the insecticidally active phosphoric acid derivatives,
    the fungicidally active azoles,
    the herbicidally active triazolinones or benzonitriles and / or
    the herbicidally active phenyluracile,
  • at least one liquid, aliphatic hydrocarbon with a boiling point above 160 ° C.,
  • - At least one oil-soluble, polymeric dispersant and
  • optionally contain one or more agrochemical active ingredients which are liquid at room temperature,
    and
• B) a liquid, aqueous phase, in addition to water
• C) optionally additives and
  • - optionally contains one or more other, at room temperature solid, agrochemical active ingredients in non-encapsulated form.
• D) in a first step a finely divided suspension
  • - At least one solid agrochemical active ingredient from the group
    the insecticidal nicotinyls,
    the insecticidally active pyrethroids,
    the insecticidal thiazole derivatives,
    the insecticidally active phosphoric acid derivatives,
    the fungicidally active azoles,
    the herbicidally active triazolinones or benzonitriles and / or
    the herbicidally active phenyluracile,
  • at least one liquid, aliphatic hydrocarbon with a boiling point above 160 ° C.,
  • - At least one oil-soluble, polymeric dispersant and
  • - A mixture of tolylene diisocyanate and 4,4'-methylene bis (cyclohexyl isocyanate) of the formula
    
  • - and optionally one or more liquid at room temperature, agrochemical active ingredients, in an aqueous phase
  • - Polyvinyl alcohol optionally mixed with gum arabic and
  • - water dispersed,
• E) adding at least one diamine and / or polyamine to the resulting mixture in a second step and
• F) the microcapsule suspension obtained optionally in a third step
  • - with additives and
  • - optionally mixed with one or more other, at room temperature stable, agrochemical active ingredients in a non-encapsulated form.

2. A method for producing microcapsule suspensions according to claim 1, characterized in that one 3. Use of microcapsule suspensions according to claim 1 for appli cation of the agrochemical active ingredients contained on plants and / or their habitat. 4. Microcapsule suspensions according to claim 1, characterized in that Imidacloprid is contained in microencapsulated form. 5. Microcapsule suspensions according to claim 1, characterized in that Carpropamide in the liquid, aqueous phase in unencapsulated form is included. 6. microcapsule suspensions according to claim 1, characterized in that

• - Imidacloprid in microencapsulated form and
• - Carpropamide in an unencapsulated form

is included.