NO150982B - SYSTEMIC INSECTICIDE PREPARATION WITH CONTROLLED DIFFUSION IN THE FORM OF A SOLID, HOMOGENEOUS, Rigid OR SOFT MASS CONTAINING OXIMM CARBAMATE - Google Patents

Description

The present invention relates to systemic insecticides which make it possible to obtain a controlled diffusion of the active agent in water or in soil, as well as a method for producing such insecticides.

The insecticide preparations according to the invention contain a polymeric carrier material and a systemic insecticide from the oxime carbamate family.

It is known to enclose active agents in a polymer matrix to obtain a slow diffusion into water or soil; one produces, in this way, algae (ANON, Chem. Eng. News, 1972, 50, no. 23, 68; CARDARELLI & BILLE, Rep. 1, Proj . 12}., Creative Biol. Lab., Babert-on, 1976), fungicides (US. patent 3,269,900 and 3,278,371), nématie ider(CARDARELLI & FELDMESSER, Proe. Control Rel. Pest. Symp. Dayton, 1975, 386)", herbi ider (US. Patent No. 3 269 900 and 3 3U3 941, Br. Patent 1 502 441, Can. Patent 846 785, Fr. Patent 2 016 8l8, YOUNG

& NELSON, Sp. Study 31-004.69/70, Dept. Army, Env. Hi. Ag., 1969; BARNES & WHITLAW,Proj. 31-004.69/70, Dept. Army, Env. Hi. Ag., 1970; HARRIS & COLL., Weed Sci., 1973, 21, 318; SINCLAIR, Env. Pollock. Technol., 1973, 7, 995; CARDARELLI, Control Rel. Plague. Formul., CRC Press., 1976), molluscicides (CARDARELLI, Control Rel. Pest. Formul-., CRC Press, 1976) and antibacterial agents (U.S. Patent No. 4,007,258, Fr. Patent 2,016,818).

When it comes to insecticides, this method is less used. Preparations are known which comprise a polymer and dichlorides (MILES & COLL., J.Agr. Food Chem. 1962, K), 240) but these are intended to release the insecticide which is volatile to the atmosphere.

They are not used in water and soil since the active ingredient is easily and quickly hydrolysed. Such preparations have also been described based on other organophosphorus compounds such as azuiphos, bromophos, chlorpyrifos, demeton, diazinon, dimefox, dimethoate, fenitrothion, fenthion, malathion, imevinphos, monocrotophos, naled, parathion, temephos and tri-chlorofon or with starting from organic chlorine compounds such as aldrine, dieldrine, endrine, heptachlor, isodrine, lindane and methoxy chloride (US. patent 3,269,900 and 3,590,119; Can. patent 846,785; Fr. patent 2,016 8l8; CLEMENTS & ROGERS, Proe. 35th Ann. Conf. Calif. Mosq. Control. Ass., I967, p. 109; WHITLAW & EVANS, J. Econ. Entom., 1968, 61, 889; SCHULTZ & COLL., Mosq. News, 1969, 29, 38 ; MILES & WOEHST, Pest. Formul. Res. Adv. Chem. Series, 1969, 86, 183; Mc DONALD & DICKENS, Mosq. News, 1970, _3_0, 563; NELSON & COLL., J. Econ. Entom., 1970, 63, 1870 and 1973, 33, 403; MILLER & COLL., Mosq. News, 1973, 3_3, 148; ROBERTS & COLL., Mosq. News, 1973, 33 155 and 165).

Aryl or hetroaryl carbamates have also been used, such as dioxocarbamate, isolane, dimethylane, carbofuran and various substituted phenyl carbamates (US patent 3,269,900; Br. patent 1,502,441; Can. patent 846,785; Fr. patent 2 016 818 and 2 279 336).

None of these preparations have the same interest as auxin carbamates towards plants; they cannot be used in the preparation according to the invention since their release in water or in soil is too small, as shown in one of the experiments. The oxime carbamates, on the other hand, diffuse very easily from the preparations according to the invention; etc. they act from the roots of the plants and penetrate into all the vital parts and in this way protect against insect attack.

Preparations are known which use aldicarb and a polymeric support material (Fr. patent 2 279 236; STOCKES & COLL., J. Agr. Food Chem,, 1973, 21, 103), but this substance is very toxic (DL 50 = 0, 9 mg/kg) which makes such preparations very dangerous and which therefore reduces their interest. Preparations of aldicarb are also known, which comprise a base material of paper and a coating of polyethylene glycol (CIBA - GEIGY, Bi-, patent 1 4 77 261), but in addition to high toxicity, industrial application is difficult, the use is difficult in the application machines , and the application to the place to be treated is less easy, especially in the presence of wind.

Granules consisting of a polymer material and an oxime-carbamate such as methomyl (Fr. patent 2 016 81S) have also been used, but in this type of heterogeneous granule, the polymer material works by absorption and the amount of active substance that can be taken up depends on the specific surface of the aforementioned polymer which should therefore be porous, this leads to concentration limitations and difficulties in regulating the release.

It has now been found that it is possible to produce homogeneous preparations with a polyvinyl carrier material containing an oxime carbamate which is much less toxic than aldicarb and where the preparations make it possible to obtain a diffusion of said carbamate into water or air at a controlled rate. The invention thus relates to a systemic insecticide preparation in the form of a solid, homogeneous, stiff or soft mass which includes:

A - a, insecticide,

B - a polyvinyl chloride having a molecular weight of more than 10,000, C - a control agent selected from hydrophobic diluents, D - optionally an additional control agent selected from hydrophilic

diluents and powder materials,

in that the preparation is characterized in that the insecticide A is an oxime carbamate with the formula

where R1 is R'X- or R'-C-C(R")-(R'")- where X is a sulfur atom or a sulfonyl residue, R' is an ethyl or methyl residue,

R" is a hydrogen atom or an ethyl or methyl residue and_R"'

is a hydrogen atom or an ethyl or methyl residue, R£ is the residues ethyl, isopropyl, methyl and tert-butyl.

The systemic insecticides defined above are described in particular in the patents of CIBA-GEIGY (Fr. 2 150 185, US 3 832 400), Consortium fur Elektrochemische Industrie (US 3 816 532), Diamond Shamrock. corp. (US 3,875,232), Dupont de Nemours & Co (US 3,576,834, 3,639,633, 3,647,86l) and Kumiai Chemical Industry Co. (JP 72 17 993).

Among these, one can e.g. name them. most known:

(N-methylcarbamoyloxyimino)-2-methylthio-2-ethane (METHOMYL)

(N-methylcarbamoyloxyimino)-2-methylthio-3-butane (BUTOCARBOXIME)

(N-methylcarbamoyloxyimino)-2-methylsulfonyl-3-butane (BUTOXY-

CARBOXIME)

(N-methylcarbamoyloxymino)-2-dimethyl-3,3-methylthio-1-butane

(THIOPANOX).

Insecticidal material which is preferred in the preparations according to the invention is BUTOCARBOXIME defined above. The insecticide A constitutes between 5 and 50 parts by weight per 100 parts preparation, preferably between 10 and 40 parts by weight.

Polyvinyl chloride B makes up between 20 and 70 parts by weight per 100 parts preparation, but preferably amounts to between 30 and 50 parts.

The addition of a regulatory agent has been selected

among hydrophobic diluents and makes it possible to vary

as a function of their nature and amount, the release rate of the insecticidal material, and this control agent should be chemically inert to insecticides. The hydrophobic diluents are selected from among compounds without a hydrophilic function and which are known in the plastics industry to have softening properties. These compounds are e.g. low molecular weight polymers, chlorinated paraffins and heavy esters.

These regulatory funds C amount to between 15 and

70 parts by weight per 100 parts preparation, preferably between 20

and 55 parts by weight.

As examples of low molecular weight polymers, one can mention those that are formed from homopolymerization or copolymerization of the following monomers: (1) homopolymerization: vinyl acetate, isobutylene and ethylene chloride, (2) copolymerization: acrylonitrile/butadiene, diethyl fumarate/butadiene, ethyl acrylate/butadiene, vinyl acetate/ethylene, vinyl acetate/ethyl acrylate, vinyl acetate/dimethyl maleate, vinyl acetate/allyl acetate, vinyl chloride/styrene, vinyl chloride/allyl chloride and vinyl chloride/vinyl acetate.

One can also mention polyesters, preferably neutralized by esterification with an alkanol such as those produced by the following condensations: glycerol/sebacic acid, glycerol/azelaic acid, glycerol/phthalic acid, propylene glycol/adipic acid and propylene glycol/sebacic acid.

As examples of heavy esters, the following can be mentioned: (1) monoesters formed between alkanols and alkanoic acids or alkenonic acids such as e.g. laurate, myrisate, palmitate, stearate,

ethyl undecanoate and ethyl oleate, isopropyl, butyl and isobutyl.

(2) Diesters formed between alkanols and dicarboxylated hydrocarbons such as e.g. dialkyl adipates such as dioctyl adipate, dinonyl adipate, dialkyl sebacates such as dibutyl sebacate, di-pentyl sebacate and dioctyl sebacate, dialkyl acelates such as dioctyl acelate, dialkyl phthalates such as dibutyl phthalate, di-octyl phthalate, didecyl phthalate, bis(undecyl)phthalate , bis(dodecyl)phthalate, bis(tridecyl)phthalate, bis(tetradecyl)phthalate and dicetyl phthalate. (3) Diesters formed between alkyl-substituted or unsubstituted phenols and dicarboxylated hydrocarbons such as e.g. diaryl phthalates such as diphenyl phthalate and dicresyl phthalate. (4) Diesters formed between alkyl-substituted or unsubstituted cycloalkanols and decarboxylated hydrocarbons such as e.g. dicyclohexyl phthalate and bis(methylcyclohexyl) phthalates . (5) Diesters formed between phenylalkanols and dicarboxylated hydrocarbons such as e.g. dibenzyl sebacate. (6) Diesters formed between alkanediols and monocarboxylated hydrocarbons such as e.g. trimethyl 2,2,4 pentanediol-1,3 di-isobutyrate. (7) Triesters formed between alkyl-substituted or unsubstituted phenols and phosphoric acid such as e.g. triphenyl phosphate,

tris (terbutyl-4-phenyl) phosphate and tricresyl phosphates.

(8) Triesters formed between alkanols and phosphoric acid such as

e.g. trioctyl phosphate.

The hydrophilic diluents that act as

additional regulating agents can amount to between 0 and 50 parts by weight per 100 preparations. They are chosen from compounds that are mix-

only, soluble or dispersible in water and physically combine

equal to the insecticide material A, polyvinyl chloride and the hydrophobic diluent.

As examples of hydrophobic diluents

the following can be mentioned:

(1) Polymers and copolymers of vinyl alcohol such as polyvinyl alcohol and polyvinyl alcohol/polyvinyl acetate copolymers.

(2) Polyvinyl pyrrolidones.

(3) Alkanediols such as dimethyl-2,2 propanediol-1,3, propylene glycol, butylene glycol, diethyl-2,2 propanediol-1,3• (4) Polyalkanediols such as polyethylene glycols, polypropylene glycols and polybutylene glycols. (5) Alkanetriols such as glycerol, and their mono-esters formed with alkanoic or alkenonic acids. (6) Esters formed between aliphatic hydroxy acids and light alkanols such as trimethyl, triethyl, tripropyl and tributyl citrates. (7) Condensation products between propylene or ethylene oxide with alkyl phenols such as butyl, hexyl, heptyl, octyl, nonyl and dodecyl phenols, with fatty alcohols such as decanol, dodecanol, tetradecanol, hexadecanol, octadecanol and octadecenol and with vegetable oils such as palm oil, peanut oil , coconut oil, rapeseed oil and rapeseed oil, soya oil and castor oil.

The powder materials are chosen from those that are inert to water, or, on the contrary, from those that are soluble or dispersible in water, depending on whether you want to delay or accelerate the diffusion rate of the active material.

Examples of powder additives include carbon black, mineral powders such as slate, clay, marble, kaolin, talc, silicon oxide or attapulgite, organic salts such as acetates, propionates, citrates, adipates, maleates, sebacates, palmitates and stearates of magnesium, zinc, calcium and sodium, mineral salts such as silicates and carbonates of calcium and magnesium and chlorides of sodium and potassium, sulphates of sodium and calcium, potassium nitrate and potassium or ammonium phosphate, one can also mention sodium or calcium salts of alkyl aryl sulphonic acids, cellulose and its derivatives such as methylcellulose, hydroxymethylcellulose, hydroxyethylcellulose, carboxymethylcellulose, glycides such as flour, starch, dextrin and sugar, amino acids such as glutamic acid, casein and hydrolysates of proteins and various organic or mineral pigments such as in and in itself is known.

The preparations according to the invention are available as homogeneous, solid, rigid or soft masses of matter where the shape is not critical. They can e.g. available as sheets, ribbons, tubes, sticks or granules.

The structure of the mass that makes up the preparation is not critical either, the structure can e.g. be compact, fibrous, with cavities or spongy.

When they are placed in contact with soil or water, according to the invention, the preparation will release 50% of the insecticide material P^- Evenly during a period varying between 2 and 200 days. The yield of the preparation according to the invention in relation to the total amount of insecticidal material added to the preparation is excellent since almost all the insecticidal material is released after a shorter or longer time.

The preparation according to the invention can be prepared by several methods.

After a first method, it is obtained at room temperature with a mechanical mixing of the components using polyvinyl chloride in powder form. Depending on the amount of the ingredients, you get a dry powder or a liquid paste called "plastisol".

The dry powder is converted into a solid homogeneous mass by molding or extrusion, as is the case with ordinary plastic material in powder form. When it is a liquid paste, it is heated until it forms a gel and, on cooling, a solid, homogeneous mass is obtained; the diffusion rate of the active material does not vary significantly as a function of temperature and/or heating time.

According to another method, the components A, B and C of the preparation are dissolved in a volatile solvent, the powder materials, when present, can be kept in suspension by stirring. After evaporation of the volatile solvent, which can take place under greater or lesser heating, and under more or less reduced pressure, the mixture is present as a mass, and this leads to a homogeneous mass containing only a small amount of solvent.

According to a third method, polyvinyl chloride is dispersed in a mixture of components A and C which has been heated beforehand. On cooling, a homogeneous, solid is obtained

a lot.

Following a fourth method, components A and C are added to the vinyl chloride or to a semi-polymeric liquid of this compound. A polymerization is carried out according to known methods after the addition of a catalyst.

According to a fifth method, a solid mass of polyvinyl chloride, which may be present in the desired form for the final preparation, is placed in a liquid mixture of the components A + C. All or part of the component C may originally be in polyvinyl chloride. If the preparation is to contain a powder material, this has been added to the polyvinyl chloride in advance. The active material A and additive C, when the latter is mixed with the active material, penetrate the polyvinyl chloride mass; this penetration requires time which is inversely proportional to the temperature where the operation takes place.

According to a variant of this method, the polyvinyl chloride mass and the components A + C are supplied in a vessel which serves as packaging and which is impermeable to the mixture, where the internal volume is such that the liquid mixture is in contact with the maximum surface of the polyvinyl chloride mass. The penetration takes place during storage and the packaging contains a preparation according to the invention at the moment it is opened for use.

The preparations are illustrated in the experiments which

following.

Attempt 1

A polyvinyl chloride mass is used which has been softened with dibutyl phthalate and where the content of the softening agent is approx. 36 weight-Io. This mass is formed by extrusion into a tube where the outer and inner contours and cross-section are lenticular, the width used is 28 mm and the largest thickness is 3S2 mm for a length of 45 mm, the thickness of the inner walls is 20 mm, and the weight of such a mass is 7.65 g. Such masses are enclosed individually in a tight bag which is emptied of air before closing and which contains one of the following liquids (amounts in grams):

After storage for one month at a temperature of 40°C, the bags are opened, and in each case a mass is obtained whose homogeneous composition is as follows (weight-$):

Attempt 2

Polyvinyl chloride is used in fine powder form for plastisol, which is mixed with technical butocarboxime with a purity of Qj>% and dioctyl phthalate in the following proportions:

The liquid paste is poured into Petri dishes to a thickness of 2 mm, and these are placed in temperature-controlled ovens with residence times varying between 5 and 30 minutes at temperatures varying between 115 and 135°C." In all in these cases, a homogeneous plastic mass is obtained and the content of active substance is determined by analysis, which is expressed as a percentage of pure, active material.

The same analyzes make it possible to establish that only the volatile impurities in the technical material are lost during heating.

Attempt 3

Three series 3A, 3B and 3C of the preparation according to the invention are produced using the method described in experiment 2, and are operated at 125°C for 15 minutes.

The preparations produced in this way have the form of plates with a diameter of 32 mm and a thickness of 12 mm and they have the following composition (the values as % by weight):

The plates produced in this way are transferred into a container filled with water, and periodically the amount of active material that has passed into the water is measured.

The following table reproduces the recorded values (percentage of active material that is diffused in relation to the active material that is added to the preparation, and weight of active material that is diffused in milligrams).

Attempt 4

Plates 4A, 4b and 4C are used, as those described in experiment 3, and which have the same composition.

These plates are each placed in sand where the water content is approx. 20% and periodically the percentage of active material that has diffused is measured.

The results of these measurements are reproduced in

the table below:

Attempt 5

A preparation is prepared as follows (values in weight %):

The procedure described in experiment 2 is used (15 minutes at 125°C), and a plate with a diameter of

90 mm with varying thickness.

These plates are placed in sand where the water content is approx. 20% and periodically the percentage of diffused active material is measured.

The results are reproduced in the table below.

Attempt 6

You proceed in the same way as in experiment 2

(15 min. at 125°C) to prepare the preparations 6A to 6D which are in the form of plates with a diameter of 90 mm and a thickness of 1.5 mm (values in weight%) in

The plates are each placed in sand where the water content is close to 20% and periodically the percentage of diffused active material and likewise the weight are measured.

The results of the measurements are reproduced in the following table:

Attempt 7

You proceed in the same way as in experiment 2

<1> (15 min. at 125°C) to prepare the preparations 7A and 7B which are in the form of discs with a diameter of 90 mm and a thickness of 2 mm (values in % by weight):

The disks are each suspended in a container filled with water and periodically the percentage of diffused, active material is measured.

The results of the measurements are reproduced in the following table:

Attempt 8

Proceed as in experiment 2 (15 min. at 125°C) to produce preparations 8A and 8B which are in the form of disks with a diameter of 32 mm and a thickness of 12 mm (values in weight %): ( a) Polyvinyl acetate hydrolysed with 30% polyvinyl alcohol with a viscosity of 98 centipoise in a solution of ^% in water at 20°C.

The disks are each suspended in a container filled with water and periodically the percentage of diffused active material in the water is measured.

The results of the measurements are reproduced in the following table:

Attempt 9

Proceed as in experiment 2 (15 min. at 125°C) to produce preparations 9A to 9F which are in the form of discs with a diameter of 90 mm and a thickness of 2 mm (values in weight):

The disks are each placed in a container filled with water and periodically the percentage of diffused active material is measured.

The results of the measurements are reproduced in the following table:

Attempt 10

Proceed as in experiment 2 (15 min. at 125°C) to produce the preparations 10A to 10E which are in the form of disks with a diameter of 90 mm and a thickness of 2 mm (values in % by weight):

The disks are each suspended in a container filled with water and periodically the percentage of diffused active material is measured.

The measurement results are reproduced in the following table:

Experiment II

Proceed as in experiment 2 (15 min. at 125°C) to produce preparations 11A and 11B which are in the form of discs with a diameter of 90 mm and a thickness of 2 mm (values in weight-?):

The disks are each suspended in a container filled with water and periodically the percentage of diffused active material is measured.

The results measured are reproduced in the following

>table:

) Attempt 12

Proceed as in experiment 2 (15 min. at 125°C) • to produce preparations 12A to 12F which are in the form of disks with a diameter of 90 mm and a thickness of 2 mm (values in weight):

The disks are each suspended in a container filled with water and periodically the percentage of diffused active material is measured.

The measurement results are reproduced in the following table:

Attempt 13

Proceed as in experiment 2 (15 min. at 125°C) to produce the preparations 13A to 13F which are in the form of disks with a diameter of 90 mm and a thickness of 2 mm (values in weight-:'.' ):

The disks are each suspended in a container filled with water and periodically the percentage of diffused active material is measured.

The measurement results are reproduced in the following table:

Attempt 14

Proceed as in experiment 2 (15 min. at 125°C) to produce preparations 14A and 14B which are in the form of discs with a diameter of 90 mm and a thickness of 2 mm (values in weight):

The disks are each suspended in a container filled with water and periodically the percentage of diffused active material is measured.

The results are reproduced in the following table:

Attempt 15

Proceed as in experiment 2 (15 min. at 125°C) to produce preparations 15A and 15B which are in the form of disks with a diameter of 90 mm and a thickness of 2 mm (values in weight):

The discs are cut into 4 equal parts, each of which has a weight of approx. 3.5 grams.

Each quarter is placed on stony clay soil

in a depth of 7.5 cm. The average rainfall during the trial period is 3.15 mm per day.

Periodically, a quarter is taken out of the soil and the amount of butocarboxime that remains is measured by analysis to find the amount that has diffused into the soil.

The measurement results are reproduced in the following table:

Attempt 16

Seven series of preparations 16A are produced

to 16G according to the invention and uses the method described in experiment 2 and operates at 125°C for 15 minutes.

The preparations are available in the form of disks with a diameter of 90 mm and a thickness of 2 mm and are composed in the following way (values by weight):

The discs produced in this way are each placed in sand where the water content is approx. 16.7% and periodically the percentage and weight of diffused active material is measured.

The measurement results are reproduced in the following table.

Attempt 17

Three series of the preparations 17A, 17B and 17C according to the invention are prepared and the method described in experiment 2 is used and operated at 125°C for 15 minutes.

The preparations are available in the form of discs with a diameter of 90 mm and a thickness of 2 mm and they are composed in the following way (values in weight):

The discs produced in this way are each placed in sand where the water content is approx. 16.7% and periodically the percentage and weight of diffused active material is measured.

The measurement results are reproduced in the following

Attempt 18

Seven series of preparations 18A to 18G are prepared using the method described in experiment 2 (15 min. at 125°C) and using insecticides

which is outside the scope of the invention.

The preparations produced in this way are available

in the form of disks with a diameter of 90 mm and with a thickness of 2 mm and they are composed in the following way (values in weight-?):

phosphate

(g) 0,0-dimethyl and 0-(dibromo-1,2 dichloro-2,2) ethyl phosphate (h) 0,0,0',0'-tetramethyl and 0,0'-(thiodiphenylene-diyl- 4.4')

bis(thiophosphate), this substance is often referred to as "Abate".

The disks produced in this way are each placed in sand where the water content is approx. 16.7% and, after 9 days, 35 days and 60 days, the amount of active material diffused is measured.

In each case and in each sample, it is not possible to find a release of active material that exceeds 0.05% of the amount used.

Attempt 19

A preparation according to the invention is prepared using the procedure described in experiment 2, and is operated at 125°C for 15 minutes with the following ingredients:

(a''') Polyvinyl acetate hydrolyzed with 88? polyvinyl alcohol with a viscosity of 18 centipoises in a solution of 4? in water at 20°C.

This preparation is shaped into discs with a thickness of 4 mm which are cut in such a way that a cubic granule with a side edge of 4 mm is obtained.

The granulate is buried near rose bushes of the species Red Favorite planted in siliceous rich clay soil in the department of Vienne in France.

Three dosages are used: 30, 45 and 67 grams per rose bush. An irrigation of 6 liters of water per rosebush is done three times a week. After 15 days, the rose petals are crushed and an extraction is carried out to find the content of insecticide material. The following content can be detected:

It has also been proven that this content is sufficient to prevent the spread of pests on the plants.

Attempt 2, 0

The six preparations 20A to 20F are prepared. according to the invention and uses the method described in experiment 2, and operates at 125°C for 15 minutes with the following ingredients, (values in percentage):

in

These preparations are formed into discs with a thickness of 4 mm, which are cut in such a way that cubic granules with a side edge of 4 mm are obtained.

The granules are placed on the surface of the soil in pots with a diameter of 11 cm, each of which contains a plant of the species Hibiscus rosasinensis, and after application the granules are lightly covered with soil and irrigated with 1 liter of water per pot; the amount of each preparation used corresponds to 50 mg butocarboxime per potty:

The plants are infected with insects of the species Myzus persicae and the effectiveness of the insecticide is measured periodically over 35 days. 5 plants are used for each preparation.

The recorded results are reproduced in the following table, and expressed as a percentage of insects that have died in relation to the amount recorded on the first day*, the value reproduced is the average for each position for the system of 5 plants:

Claims (11)

1. Systemic insecticide preparation in the form of a solid, homogeneous, stiff or soft mass which includes A - an insecticide, B - polyvinyl chloride with a molecular weight of more than 10,000, C - a control agent selected from hydrophobic diluents means, and D - optionally an additional regulating agent selected from hydrophilic diluents and powder materials, characterized in that the insecticide A is an oxime carbamate with the formula: i where R 1 is R'X- or R'-X-C(R")(R"')-, where X is a sulfur atom or a sulfonyl residue. R' is a methyl or ethyl residue, R" and R"' are independently a hydrogen atom or a methyl or ethyl residue, and where R2 is methyl, ethyl, isopropyl or tert-butyl residues. 2. Preparation according to claim 1, characterized in that the insecticide constitutes between 5 and 50 parts by weight per 100 parts preparation. 3. Preparation according to claim 2, characterized by the insecticide constituting between 10 and 40 parts by weight per 100 parts preparation. 4. Preparation according to claims 1-3, characterized in that polyvinyl chloride B constitutes between 20 and 70 parts by weight per 100 parts preparation. 5. Preparation according to claim 4, characterized in that polyvinyl chloride B constitutes between 30 and 50 parts by weight per 100 parts preparation. 6. Preparation according to claims 1-5, characterized in that the regulating agent C constitutes between 15 and 70 parts by weight per 100 parts preparation. 7. Preparation according to claim 6, characterized in that the regulating agent C constitutes between 20 and 55 parts by weight per 100 parts preparation. 8. Preparation according to claims 1-7, characterized in that the insecticide is (N-methylcarbamoyloxyimino)-2-methylthio-2-ethane, (N-methylcarbamoyloxyimino)-2-methylthio-3-butane, (N-methylcarbamoyloxyimino)-2-methylsulfony1-3-butane, or (N-methylcarbamoyloxyimino)-2-dimethyl-3,3-methylthio-1-butane. 9. Preparation according to claim 8, characterized in that the insecticide is (N-methylcarbamoyloxyimino)-2-methylthio-3-butane. 10. Preparation according to claims 1-9, characterized in that the regulating agent C is low molecular weight polymers, chlorinated paraffins or heavy esters. 11. Preparation according to claims 1-10, characterized in that, as an additional regulator, it contains a hydrophilic diluent chosen from polymers, polyols and esters which are miscible, soluble or dispersible in water and from polyoxyalkylated products.