DE1948438A1 - Molded articles with insecticidal properties - Google Patents

Description

• 1-4 * 93.06

η
Öait-Gilles-lez-Bruxelles, 4> Chaussee de Charleroi, Belgium

Shaped objects with insecticidal properties "

The invention relates to molded articles containing insecticides Properties and in particular on solid porous shaped Objects of mineral nature, the pores of which are in are essentially filled with an insecticidal agent o

There are insecticidal compounds, especially organophosphoric esters, such as dirnethyl "-2,2-dichlorovinyl phosphate (abbreviated DDVP), which have remarkable insecticidal activity against parasitic insects, for example mosquitoes, aphids, aleurides, thrips, gicadels, mites and the like. But some of them have inconveniences in use, for example a relatively high vapor tension at room temperature and consequently rapid evaporation, which makes it necessary to repeat the dose frequently in order to maintain a sufficient active concentration in the places which the parasitic insects encounter Another disadvantage, particularly with regard to DDTP and other insecticidal compounds of this class, is the tendency of these substances to decompose in the presence of moisture, as a result of which they lose their insecticidal activity

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the approaches determined in which the DoDoY-P _{0 is} usually caused by finely divided pesticides such as kaolin, diatomaceous earth, B & n tonite, pumice, talc, Ättapulgit, dolomite, limestone, gypsum, etc. » is upset _o

According to British patent specification 955 * 350, the insecticidal organophosphorus compound is protected by mixing it with a polymeric organic substance which has a molecular weight of more than 1000. In this your the organo-phosphorus compound not only is this latter is protected from moisture within the polymeric mass because of the hydrophobic nature, their rate of evaporation is greatly reduced. The insecticidal agent obtained can be used / shaped, in particular in the form of sheets. It can also be in the form of cellular substances (solid foams) which, if desired, can be broken - active substance occurs on the surface of the object (e.g. plate), which can go as far as the formation of droplets that fall from the plate. Without taking into account the unpleasant appearance, this can pollute the environment. Another problem is that the amount of active substance that can be incorporated into the plastic compound is relatively limited because the active substance as a plasticizer or co-plasticizer is not a certain amount in relation to the plastic compound can exceed, In general, the percentage of an insecticidal substance in a 'ttststpe plate of this type is about 20 - 25 wt. <f ₀ ...-

According to Belgian patent specification 692 * 75'4, a volatile insecticide (or other volatile active material) within a solid calcareous body, of animal origin and porous nature, for example a bone, is a solid body from a mollusc (cephalopod), in particular a bone by squid or sepia, absorbed · A major drawback of this process is that the carrier material is so difficult and unsafe to procure * and

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that one because of the origin of the carrier itself in the dimensions and the shapes of the insecticidal molded article that can be manufactured is severely limited Patent not whether a moisture sensitive active Substance, as is the case in particular for the D.D.V.P. is, would be protected if they were in the said solid calcareous natural bodies is adsorbed, and moreover, this patent specification gives no specific design. "

According to the invention, it has surprisingly been found that the mineral silicic acid-like, alumina-like, silicic acid-alumina-like, silicic acid-lime-alumina-like, silicic acid-lime-like, lime-alumina-like and lime-like substances, which, as mentioned above, the labile insecticidal substances in particular the organophosphorus esters, such as the DeD ₀ VoP ₀ , change when the mineral substances mentioned are in powder form, but show an essentially inert behavior towards the insecticidal compounds when they are agglomerated from Hatur ~ -aus or artificially in the form of porous solids. It is therefore possible to mix these porous mineral solids with an insecticidal active volatile and unstable substance, e.g. 3. to be impregnated with DDVoPo to produce shaped objects with insecticidal properties. It has also been found that the molded articles so obtained slowly release the volatile insecticidal active substance with which they are impregnated, whereby the insecticidal properties of the molded articles so produced are maintained for several months. The DDV «Po introduced into the molded object is completely retained when it is kept in hermetic packaging« Hence, after the extraction of the DDV «P. by means of diethyren chloride, the gas chromatography test of the extract enables the DDVP to be found undamaged after a storage time of 4 months and more «

The insecticidal molded article of the present invention is therefore by a solid mineral porous natural or artificially a ^^ lom ^ riert! rager marked, which under the conditions for the control of insects

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to the insecticidally active substance with which it is is impregnated, is inert "

Under a porous solid mineral naturally or artificially agglomerated carrier is meant any natural or artificial mineral material from the Art'der silica _te! Donerde, silica-alumina, silica-lime-alumina, Kieseläure-lime, lime, alumina and lime, the mineral kingdom the particles forming it being naturally or artificially agglomerated to form a solid porous support of any geometric shape. Among the solid porous bodies that correspond to this definition, one can, for example, but not limitatively list pumice cut into slabs, an artificial, porous agglomerate based on calcium silicate aluminate, made from lime and volatile ashes from central heating systems and aluminum powder, a porous one Asbestos-cement agglomerate, autoclaved or naturally aged, a porous asbestos-silica agglomerate, formed from the asbestos type amosite or earysotile and calcium silicate. and the same·

The porosity of the naturally or artificially agglomerated mineral solid porous carrier should be as large as possible in order to retain a large amount of active insecticidal substance by adsorption; For the same reasons, the dimensions of the pores should be as small as possible so that the capillary forces exert a very high retention effect on the substance and regulate the evaporation rate of the insecticide more effectively. Silicic acid can have a porosity of 68 $, pores of an average size, of 500 1 and a specific surface area of about 32 m / g

Among insecticidal active Substans mean any volatile "insecticides" material which under the normal application ". Düngsbedingungen a vapor pressure in the order of · about O ₉ OOt mm mercury at 25 ⁰ O has. In particular, part of the insecticidal active substance of the class of the Dimethyl-2,2 ^ dichlorovinyl phosphate (DDVP) and other similar * -

Licher organic phosphorus compounds according to the general Formula?

RO

RO

OM

where «R is an alkyl group,

X is an oxygen or sulfur atom, M is a group with the following structure *

R ' Z - Z or E » Z - Z or R ' R " 0 -OR I. I. I. I. J I. Il -0 = 0 -0 -
I. 0 -0 = ■ G - C. I.
Z Z -

wherein: R ^{1 represents} a hydrogen atom or an alkyl group

Z is a halogen atom

R "is a hydrogen atom, an alkyl group or a halogen »

Subject a particularly advantageous variant of the invention can a mixture of active insecticidal substance and one or more chemical substances is used for impregnation use which are soluble in the insecticide at ordinary or elevated temperature, and which are regulating Effect on the vapor tension of the insecticide used and have a water-repellent effect, for example mineral oils such as yaseline oil, organic derivatives of chlorinated Diphenyl or chlorinated polyphenyl, silicone oils and the like. The aim of adding these auxiliaries to the active insecticidal substance is not just to add them hydrolytic effects of atmospheric water vapor .protect, but also the rate of evaporation at will to decrease the active insecticidal substance. The amount of the water repellent added is 0-40% by weight, preferably 1-25% by weight, of the mixture of insecticidal active substance / water-repellent substance *

You can also cover the porous object with a film

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1348438

■ Made of water-repellent polymer, for example with a Mim Made of high or low pressure polyethylene or any other Polymer, envelop, which for vapors of active insecticides Substance is permeable, but the binding is more atmospheric Resisted moisture -

In order to produce the molded insecticidal articles according to the invention, any method is used which enables the insecticide to be introduced into the pores of the support. The latter is preferably subjected to a pretreatment in order to remove the moisture contained therein. This pretreatment may, for example, in a simple heating to a temperature from 30 to 500 ⁰ G for a period of 24 hours to 10 seconds, depending on the nature of the carrier, its porosity, consist its behavior in the heat, its Zurückjihaltevermögen of moisture and the like This pretreatment can also consist of a treatment under a more or less high vacuum, ie under a reduced pressure, which can be between atmospheric pressure and 0.1 mm Hg. The drying treatment under vacuum can also be combined with drying in the heat if necessary *

It has also been found that in order to improve the duration of action of the insecticide in the molded article according to the invention, especially when the insecticide is the DDV ₀ P., it is advantageous to acidify the porous article so that its pH, measured in aqueous solution, falls below Standard conditions between 5 and 7, preferably between 5.5 and 6.5, are established. This acidification is preferably carried out before the porous object is impregnated with the insecticidal substance. An aqueous solution of any inorganic or organic acid can be used as the acid. Particularly good results have been obtained when using an aqueous solution of oxalic acid as the acidulant. The amount and concentration of the acidic aqueous solution are chosen so that the pH of the acidified porous article is low. is in the exact interval given above. After acidification, the molded object is trooknet before

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its impregnation with the insecticide mixture carried out * ■ "

The impregnation of the porous acidified or non-acidified object with the active insecticidal substance or with the mixture of such substances and the water-repellent substance can be carried out according to known methods, in particular by completely or partially immersing the carrier in the active insecticidal substance or in the mixture of the active insecticidal substance and the water-repellent substance are carried out. It is also .can one or more organic solvents or diluents enforce, in order to facilitate Bindringen of the impregnating agent into the porous article "Am another impregnation method is the porous dried and before a high vacuum exposed! Carrier with the vapor of the insecticide in To bring touch. The porous carrier can also be impregnated by spraying the insecticide or the insecticidal mixture onto the carrier. Impregnation can also be carried out by depositing a certain amount of the insecticide in a suitable cavity in the carrier, for example a hole made by molding or drilling, from which the porous material is soaked with the insecticide or the insecticide mixture "Impregnation treatments can be carried out at temperatures between -20 and + 25O ⁰ G, depending on the volatility of the insecticide, the properties of the carrier and the impregnation method chosen."

After impregnation, the carrier is allowed to drain for a few minutes in order to remove the unadsorbed insecticide. Approximately 1 hour after draining, the impregnated porous support is dry, manipulable and ready for use · .., '■■

The molded insecticidal article of the present invention has numerous advantages. He has shaped compared to yours The subject of British patent specification 955 * 350 has the advantage that exudation of the volatile active substance in the Is completely suppressed in the form of droplets, with the result that it is not necessarily placed in a box.

00 * 118/1 * $ 7

must be closed, but can be used without a protective device. Another advantage is that the amount of active substance can be increased considerably. Instead of 20-25 $ active inaecticidal substance, the shaped article according to the invention can contain up to 60 *%> of active substance without exuding the same, which enables either a much larger amount of insecticide to be released and / or considerably the duration of the insecticidal activity of the shaped to extend insecticidal article - Finally, the carrier material is significantly more readily available. The molded article obtained according to the invention is unbreakable, incombustible, incorruptible and dyeable »

Compared to the subject of the Belgian patent specification 692..754 possesses the molded article according to the invention also have the advantage of being a carrier material like others to behave mineral substances, do not give way to the restrictions on the dimensions, the porosity and the procurement, such as those of the Belgian patent specification, are subject to «.

The following examples illustrate the invention without illustrating it restrict. . ·

Example 1

A natural pumice block is used for the experiments, which is sawn into the following panels 12.3 χ 2 χ

ρ 2 cm, which gives a total surface area of about 106 cm »The percentage of porosity found is 35 $, the average. The empty dimension of the pores is 740 % and the calculated specific surface area is 1 m / g. The block is dried at 100 ° C. for 5 hours and allowed to cool in the desiccator to the usual temperature, then weighed (found weight 57 g) and immersed in DDVP for 25 minutes. The block is weighed close to the dripping compartment (amount of DDVP absorbed 24.3 g, ie 29.8% by weight of DDVP are contained in the ■ impregnated plate) ·

The impregnated block is then attached to one of the changes in the relative humidity of the air (60 - 75 i ° relati-

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Ί9Λ8438

ve humidity) and the temperature (20-25 ⁰ O) exposed place to. simulate the actual conditions of use in practice and weigh the block every 7 days to determine the loss of DDYP by evaporation.

Loss to D.D.V.P. after 7 days: 1.76 g

from the 8th to the 14th day: 1.08 g

from the 15th to the 21st day: 1.83 g

from the 22nd to the 28th day: 1.74 g.

Example 2

The way of working is the same as in example 1 with the modification, that the pumice stone through a plate made of calcium-silicic acid-aluminate replaced (volatile ash with lime and agglomerated with aluminum powder) of 15 x 2.8 χ 1.4 cm with a weight of 48.6 g.

Porosity Percentage: $ 55

mean pore diameter: 235 A specific surface area: 24 m / g

Weight of D.D.V.P. absorbed: 23.3 g equals 32.4% by weight an D.D.V.P., contained in the impregnated plate.

Results of determining the loss in weight of D.D.V.P »

by evaporation:

Loss to D.D.V.P. after 7 days: 2.3 g

from the 8th to the 14th day: 1.32 g from the 15th to the 21st day: 1.58 g from the 22nd to the 28th day: 1.36 g.

Example 3

The treatment is the same as in Example 1 with the modification that the pumice stone through a plate of amosite silica replaced (by 35 wt. $ amosite and 65 wt. $ oalcium- ■ silicate) 15 χ 3 χ 1.2 cm, of approximately 133 cm surface and a weight of 36.42 g.

Percentage porosity of the plate: $ 68 Average pore diameter: - 500 A

specific surface: 32 m / g ■

Weight of DDVP absorbed: 28.99 g = 44.3% by weight

009015/1878

. "..- '■■ ■ ■■■■■ -. ¹⁰ -

.D.D.V.P. contained in the impregnated plate.

Results of the determination of the loss of weight ύοώ DD ₀ VP,

by evaporation,

'' Loss of D.D.V.Po after 7 days: 1.47 g

from the 8th to the 14th day 1.21 g

from the 15th to the 21st day i 0.7 g

from the 22nd to the 28th day: 0.7 g.

Example 4 · ·

For the following experiments, plates made of amosite silica are used, as used in Example 3. The working conditions are those of example 1 «

Example 4a, a mixture of D.D.V.Po and chlorinated diphenyl (weight ratio 7s1)

Example 4b, a mixture of D-D.V.Po and chlorinated polyphenyl (Weight ratio 7: 1)

Example 4c, a mixture of D.D.VoP. and petroleum jelly (Weight ratio 7s1)

Example 4d, after absorption and draining of the impregnated Plate from D.D.V.Po is soaked in a solution of 20 g of low-pressure polyethylene, 80 g of normal heptane and then dries the plate "

The results of the determination of the determination of the loss in weight of D.D.V.P. by evaporation are the following:

Example 4a

Plate weight 37.7 g

Weight of D.D.V.P. absorbed: 26.62 g (the plate contains

39.7 $ ah absorbed D.D, V «P.) Weight of chlorinated diphenyl absorbed: 3.82 g (the

Plate contains 5.6 $ of absorbed diphenyl) Loss of DDVP after 7 days 1 _} 1 g

from day 8 to day 1: 1.0 g

from the 15th to the 21st day. 0.9 & -. from the 22nd to the 28th day i 1.0 g ...

Example 4b .

Weight of the plate 39.22 g.

009815 / 187S

Weight of P.D.V.P. absorbed: 24.96 g (the plate contains

36.7 $ of absorbed ODVP _O ) x weight of absorbed chlorinated polyphenyl »3.57 g (the plate contains 5.27 $ of absorbed chlorinated

Polyphenyl)

Loss to D-D.V.P. after 7 days * 1.0 g.

from 8 to 1 * 4. Tags 1.6 g

from the 15th to the 21st day * 0.8 g

. from the 22nd to the 28th day 0.7 g.

Example 4c

Plate weight: 38.4 g

Weight of absorbed D.D.V, P .: 27.1 g (the plate contains 39.1 $ of absorbed D, D.Y.P *)

Weight of petroleum jelly absorbed: 3.87 g (the plate contains $ 5.6 absorbed oil)

Loss to P.D.V.P. after 7 days: '1.04 g

from the 8th to the 14th day: 0.9 g

from the 15th to the 21st day: 0.9 g

from the 22nd to the 28th day:. 0.8 g.

Example 4d

Plate weight: 37 g.

Weight of absorbed D.D.Y.P .: 26.1 g (the plate contains $ 41.3 in absorbed D.D.V.P.)

Loss to D.D.V.P. after 7 days: 0.75 g

from the 8th to the 14th day: 0.9 g

from the 15th to the 21st day: 0.9 g

from the 22nd to the 28th day: 0.7 g.

When compared with Examples 1-3, it is seen that the addition _n of water-repellent Substa zen to DBVP (Examples 4a-4c), or the attachment of a water-repellent substance in the form of an outer layer (Example 4d) have the effect of the loss of To regulate and decrease DDVP by evaporation as a function of time.

0 0 9 815/1876

For the following experiments, sheets made of i.mosit ~ silica such as. but those used in Example 3 have a dimension of 20 × 3.5 × 0.65 cm _e

For example. 5a is dried to a plate of Araosit silica for 5 hours at 110-120 ⁰ O ,, they can be in the desiccator at ordinary temperature to cool, it weighs (29, 9 g) and import "it pregnated -with; B * D» V «P. As in the previous; examples," .., - ■ "

Weight of the impregnated plate 55? 9 g Weight "of absorbed D * D.T * P ·: 26 g.

In example 5b, the plate is previously treated with 100 g of an aqueous solution of oxalic acid of 5% for 24 hours at normal temperature. The acidified plate obtained is allowed to drain (pH = 5.75) and it is dried completely. At 110-12O ⁰ O. Each time it cools, it is weighed (34.4 g) and then impregnated with DDTP as in Example 5a » Weight of the impregnated plate 60.4 g. . . · - Weight of DDVP absorbed ₀ ; E.g. q

In Example 5o one works as in Example 5a with the modification that the plate is impregnated with a mixture of 2 ^ g DDTP »and XZ E Tetrachlorierrtem.Diphenyl. Weight of the impregnated platinum egg 66.05. g - .. "weight of absorbed DDYPs-25.5 g weight of absorbed tetrachlorinated diphenyl: 11.7 go

In example 5 d one works with an acidified plate, as in example 5b. Then impregnate with a mixture from 26 g of D.D.T.P, and 6 g of tetra-chlorinated diphenyl. The weight of the impregnated plate is 7ö, 5; g *

In Example 5e, the procedure is the same as in Example 5d, with the modification that the amount of tetrachlorinated diphenyl is increased from 6 to 12 g. One pursues the development of Yerlusts weight of the plates 5a to 5e as a function of time for 12 weeks, following their manufacture, wherein the average relative humidity 30 - 40 fo and the mean temperature of 18 - 25 ⁰ G war.V

00 981S / 187 6

The results obtained are shown in the table below »

Tabel -

example
5a Weight loss in g example
5c example
5d example
5e in
Weeks 3 example
5b 2.2 2.9 2.8 1 2.7 4.3 1.9 2.7 2.2 2 1.9 2.9 1.9 2.2 1.65 3 0.9 1.7 1.4 1.3 1.28 4th 0.42 1.25 0.75 0.9 0.97 5 0.71 0.7 0.75 0 _v 6 0.74 6th 0.4 0.51 0.5 0.45 0.55 7th 0.24 0.3 0 * 2 0.3 * 0.5 8th 0.4 0.3 0.26 0.29 0.4 9. 0.1 0.55 0.1 0.16 0.25 10 0 0.2 0 0.25 0.3 11th 0 0.15 0 0.1 0.25 12th 0.2

A comparison of Examples 5a and 5b shows the beneficial effect acidification of the plate (5b) for durability to D.D.T.P. However, the exhaust gas at D.D.V.P. the first Week too strong

A comparison of Examples 5a and 5o shows that the tetrachlorinated Diphenyl the exhaust at D, D.V.P. regulated, however in both cases the exhaust gas to B.B.V.P. Zero of the Uten week on

A comparison of Example 5d with Examples 5a to 5o shows that the combination of a leavened plate with a Mixture of D.D.V.P "and tetra-chlorinated diphenyl at the same time the regularity of the exhaust gas at D.D.Y.P, and his Improved durability.

In Example 5e _g, where the content of tetra-chlorinated diphenyl has been doubled compared to Example 5ä, it can be seen that the results obtained are even more favorable.

■; ■ .. ■■ -. . - 14 - ■■ ". ■■ .-. ■ ■■:. ■. ■■.; -

Example 6. ' .

This example is given to show the beneficial role of an addition of a methylphenylsilioon oil in protecting the panels against atmospheric moisture. The plates used are made of amosite-silica, acidified by impregnation with a solution of oxalic acid of 9 wt. Traversed the procedure described in Example 5b The experiments subjected plates 6a and 6b are fo in accordance both with a mixture of DDVP / tetrachlorinated biphenyl in .Gewichtsverhältnis of 68.4 / 31 »6 impregnated. In addition, 1% by weight of methylphenyl silicone oil is added to the plate 6a at the time of impregnation with the insecticidal mixture, while the plate 6b receives no such addition. The change in the weight loss of panels 6a and 6b is observed during the first few days following their manufacture. The results thus obtained are shown in the table below. During the tests, the temperature fluctuated between 20
$ 70 and $ 80.

between 20 and 25 ⁰ O and the relative humidity between

■,. . T a b e 1 1 e

Weight loss (g) Duration in days Example 6a Example 6b

1 'O + 0.3

2 0.1 + 0.05

3 0.15 0

4 0.1 0.02 • 5 0.2 0.18

• 6 0.26 '0.25

'- ■ 7. 0.27 0.22

8 0s32 0.18

9 '0.25 0.15

10 0.23 0.21

11 0.25 0.36

12 0.19 0.14 "13 0.08 + 0.03

14 0: ₊ - _Ot o9

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When examining this table you can see that di @ Platte des Example 6b which does not include silicone oil <> to Seaioiit on February 1, 13th and 14th Day wins "instead of losing, This weight gain" means that the plate is atmospheric • Has absorbed moisture, which is detrimental to the preservation Des D.D.V.Ρ »is. In contrast, in example 6a (with a salary of 1% of silicone oil), which under the same test conditions in no case shows an increase in weight, sees one that the silicone oil is effective as a Barrier to the resumption of atmospheric water behaved through the record «.

Example 7

This example proves the effectiveness of molded articles ^{according to the invention in a "knock-down n} test on adult 4-day-old houseflies from the strain JBM F-". In these tests, a plate according to the invention such as that mentioned in Example 5e is used in a room of The tests on insecticidal activity were carried out over a period of 9 1/2 days, as indicated in the table, the percentage of "knockdown" being determined every hour for 8 hours, and the content of DDV * P. Im It was only brought to zero at the beginning of the experiment * during these experiments, the ambient temperature fluctuated between 20 and 24 ° C and the relative humidity between 50 and 70 ° / oc

Under "knock-down" means that the insect falls to the ground under the effect of the insecticide, and it still remains alive for a few minutes but j ^e is Cloch unable to look normal to move. The knock-down fortune is $ 1-00 when 100 flies are hit by 100 flies. It .is Hull $,. if no fly is affected. The results follow in Table _{0 below}

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fo "IDiock-down" assets

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Observations
after
(Days) T hour 2 hours 3 hours 4 hours 5 Hours 6 Hours 7 hours 8 hours 1 100 100 100 100 100 100 , 100 7th 92 100 100 100 100 100 T ₁ OO 100 15th 45 95 100 100 100 100 100 100 28 0 34 87 98 99 ', .99:,., ■: ■ 99 99 48 0 ■ 9 40 61 79 91 100 100 60 0 1 26th 43 62 73 81 84 74 0 O 0 • o 1 , · ■ '* ■'. ■■■■■■■ '' ■ ' 21 24 90 0 0 0 O 0 1 ■ 6, 17th

Claims (1)

Claims 1. molded article with insecticidal properties, characterized in that he has a porous mineral naturally or artificially agglomerated carrier and an insecticidal substance with which this mineral porous carrier is impregnated, the ' the latter is inert to the insecticidal substance under the conditions of use for the control of insects » 2. Shaped article according to claim!, Characterized in that the porous mineral carrier from a mineral substance selected from the group, which consists of a silica-like, alumina-like, silica-alumina-like, silica-lime-alumina-like, silica-calcareous, calcareous-alumina and calcareous consists of material originating from the mineral kingdom is to 3. Shaped article according to claim 1 and 2, dadur Ό h ge ke η η ζ eich η et _f that the porous mineral support is mmstone sawn into plates · 4. Shaped object sand according to claim 1 and 2, characterized characterized in that the porous mineral Carrier-an artificial porous agglomerate based on of calcium-silicic acid-aluminate, produced from lime, volatile ashes from central heating and aluminum powder, "is. - ■ '- 5 · Shaped object according to claims 1 and 2, d a ά u r c h g e k e η η ζ e i without t that the porous mineralisehe Carrier a porous agglomerate of asbestos cement, autoclaved or naturally aged asbestos cement material, is 6 » Shaped article according to claim 1 iiat 2 ^; ia 4 U r ο h ge k en β ζ β i ο h η © t _f that the porSsi mineral carrier is a porous aggloiaeraii from ABbest-Kieö & leäuri ?, formed by the Asfcest varistat ^ Amasit or Glirysotil, and Galöiuia-., 00981t / 1Ä-7S is silicate. 7, molded article according to claims 1 - 6, because ur ob ge ke η η ζ e ic h η et that the insecticidal substance has a vapor tension of-at least 0.001 mm Hg at 25 ⁰ G «· 8 "Shaped article according to claim 7 _r characterized in that the insecticidal substance is an organic phosphate" 9. Shaped article according to claim 8_, characterized ge ken η ζ eich η et that the organic phosphate Pearethyl-2,2-diQhlOrvii3ylphösphat is » 1Oe Shaped object according to claims 1-9 »d a d ur c hg e k en η ζ e i c h η et that he additionally contains a substance which acts as a regulator of the vapor tension of the wetted insecticide and / or as e ± n water- * repellent agent works " 11. Shaped article according to claim 10, since you rc h it is known that this substance consists of the MineralSlenf chlorinated diphenyl, chlorinated polyphenyl and silicone oils. 12. Shaped article according to claim 10, characterized characterized in that the substance consists of a PiIm Is polyethylene. 13. Shaped article according to claims 1 - 12, there - ■ characterized by _? that the porous mineral carrier has a pH value between 5 and 7 »- preferably between 5.5 and 6.5j *