FR2695539A1 - Temporary action product to fight termites in the soil. - Google Patents

Abstract

The invention relates to a product or concentrate for temporarily controlling termites in soil. The product contains 0.001 to 50% by weight, preferably 0.05 to 5% by weight, of a phenol derivative, of a mono-, sesqui- and / or diterpene or of a hydrogenation or dehydrogenation product. mono-, sesqui- and / or diterpene, as well as a carrier vehicle. Application: applied by spreading or introduced into the soil, the product temporarily protects the wood.

Description

The invention relates to a product or a concentrate for combating, with a

  temporary effectiveness, termites

in the ground or the ground.

  During construction activities, there is usually a large number of earth movements. On the one hand, the earth is lifted and extracted for the foundations and the cellars, and on the other hand, these cuttings are used. other places, to backfill and to landscape landscape This usually common way of acting causes in areas where termites constitute a risk, an extremely rapid spread and covering much surface of these wood destroyers nesting underground From their nests, these animals dig holes and galleries to reach a material containing cellulose and which is suitable for their food Termites thus cause, on the one hand, damage on the built wood they devour and on the other hand, they damage or destroy, in their search for a suitable food, a large number of other materials and materials that interfere with these animals during this activity. examples of an expansion of termite emergence, which initially was limited to the local scale, an expansion that is

  extremely fast and covers a lot of surface as co-

  consequence of construction activities, there is a need to

quote Paris and Bordeaux.

  Long-acting insecticide treatment of the soil is known to be a fixed component of timber protection in termite-infested areas; see for example, US-A-4 977 186 This treatment of the soil prevents well, over a long period of time, termites to feed underground by attacking the object that we want to protect For the only decontamination of construction cuttings, however, the use of long-acting insecticides is ecologically acceptable only in exceptional cases. The object of the present invention is therefore to develop a a product or a concentrate for the safe control and control of termites and the control of termites in the soil by carrying out a temporary, product or concentrated activity in which the active constituent or active constituents is or is to a large extent volatile and / or can degrade quickly, and,

  to a large extent biologically.

  This problem is solved according to the invention in that the product or concentrate contains 0.001 to 50% by weight, preferably 0.05 to 5% by weight of a phenol derivative, a monoterpene, a sesquiterpene and or a diterpene or a derivative obtained by hydrogenation or dehydrogenation of monoterpene, sesquiterpene and / or

  diterpene, as well as one or more carrier substances.

  The product or the concentrate according to the invention makes use of the high termicidal efficacy and the high volatility and / or the high degradation capacity of certain phenol derivatives as well as certain natural terpenes, sesquiterpenes or diterpenes or their hydrogenation or hydrogenation products. dehydrogenation, which is used because of their low toxicity in the pharmaceutical field, of the edible products or of the foodstuffs As representatives of these phenol derivatives having a particularly high temporary efficiency with regard to termites, it is used according to the invention eugenol (4-allyl-2-methoxyphenol), contained in the essence of nail

  clove or carnation, or thymol (2-isopropyl-5-

  methylphenol) contained in the essence of thymia These phenol derivatives, as well as terpenes, sesquiterpenes or diterpenes or their products of hydrogenation or dehydrogenation are distributed very well, because of their relatively high vapor pressure or their volatility with water vapor, in systems or circuits of hollow or voids of the earth, they develop their termicidal action and evaporate relatively quickly again from the earth or are rapidly decomposed by living microorganisms

in the ground.

  An improved distribution of the product or concentrate according to the invention in the earth, according to one embodiment of the invention, is obtained when the product or the concentrate contains an alcohol, a ketone, an aldehyde or an ester of the monoterpene, sesquiterpene and / or diterpene or

  of their hydrogenation or dehydrogenation product.

  Advantageously, the product or the concentrate according to the invention contains, as monoterpene alcohol, menthol

  or of borneol, in free form or in ester form.

  According to another embodiment, the product or the concentrate according to the invention contains, as monoterpene, carvomenthene, limonene, α-terpinene,

  terpinolene, α-thuyene, α-pinene or 2-

  bornene, singly or in combination with each other.

  In the fight against termites in the earth, phenol derivatives, terpenes, sesquiterpenes or dipertenes or their hydrogenation or dehydrogenation products are, according to an advantageous embodiment of the invention, diluted with an organic chemical solvent. or with a mixture of solvents as carrier or carrier substance, the dilution taking place at the concentration necessary for the application and the whole applied in or on the earth by penetrating the composition or by applying it on the Sol It is particularly preferred to use water in conjunction with one or more solubilizing agents as carrier or carrier substance for phenol derivatives, terpenes, sesquiterpenes or diterpenes or their hydrogenation or dehydrogenation products. solvents or the co-use of the solubilizing agents, as a general rule the possibility of to wet the body of termites and, thus, the absorption, in the target organism, phenol derivatives and terpenes, sesquiterpenes or diterpenes or their hydrogenation or dehydrogenation products It can thus fight particularly effective

termites in the earth.

  As organic chemical solvents, polar or nonpolar organic chemical solvents are used, but preferably polar organic chemical solvents. Particularly preferably, polar chemical organic solvents are solvents or solvent mixtures containing hydroxyl groups, ether,

ketone or ester.

  As solubilizing agents, use is made of surfactants with active anions or active cations, but advantageously nonionic surfactants, which dissolve the phenol derivatives, the monoterpenes, the sesquiterpenes and / or the diterpenes or their derivatives and form Examples of anionic surfactants include alkyl sulfonates and / or aryl sulfonates; Cationic surfactants which may be mentioned are quaternary ammonium compounds. Examples of nonionic surfactants that may be mentioned are polyalkylene glycol ethers or polyalkylene glycol esters, polyoxyethylene derivatives, fatty acid esters of polyhydroxy compounds. As glycerol, diglycerol or polyglycerol It is preferred to use in the context of the present invention, as dissolution aid, a polyethylene glycol ether and alkylphenol. The amount of the phenol derivative, monoterpene, sesquiterpene and / or diterpene or the hydrogenation or dehydrogenation product of monoterpene, sesquiterpene and / or diterpene that is introduced into the earth represents 1 to 500 g / m 3, advantageously 10 to 50 / m 3 of the active substance, contained in one or more

  carrier substances or in one or more vehicles.

  Examples according to the invention: Test 1: Demonstration of the termicidal efficacy Charge or batch of termites according to the European test standard EN 117; wood veneer or coating not on sand but under the soil at the bottom of the test vessel; mounting and testing device with a cover, which has a hole (2cm in diameter) for ventilation. The animals were allowed to dig for one week in this load. Then 1 ml of the product according to the invention (0.5% active substance (eugenol, thymol, α-pinene, borneol) was distributed on the surface of the sand). 99.5% of support substance or vehicle: water and polyethyleneglycol ether and alkylphenol ether as solubilizing agent) (amount of about 35 g of active substance / m 3 introduced) and the

device by the lid.

  Trial 2 Demonstration of Temiporite Termicidal Efficiency Termite loading according to the European Test Standard EN 117; wood veneer or facing, not on sand but under the soil at the bottom or bottom of the test vessel; test device mounted with a cover, this cover having a hole 2 cm in diameter for the

ventilation.

  Before introducing the termites, 1 ml of the product according to the invention, according to test 1, was distributed on the surface of the sand (quantity introduced: approximately 35 g of active substance per m 3) and then subjected the assembly, leaving it open, at 24 hours of evaporation according to

standard EN 73.

  After the time left to evaporate, we have

introduces termites.

  The results of the test of the temporary efficacy of the products according to the invention were carried out with eugenol, thymol, a-pinene and borneol and are shown in FIGS. 1 and 2 attached as animals. The results obtained show that the particularly preferred products of the invention, eugenol and thymol, develop a very intense termicidal action and which acts. quickly (test 1): the time required to obtain 100% destruction of termites (in abscissa, 0 to 80 hours, in Figures 1 and 2) is relatively short (less than 5 hours) This efficiency decreases however very quickly because of the volatility of these compounds (test 2) that is to say that the termicide efficacy is clearly temporary and therefore limited in time It has been established that after 69 hours, only% of termites (eugenol ) or 8% of the termi thymol introduced were killed A-pinene and borneol show

  a termicide action that is established more slowly (trial 1).

  The time required to achieve 100% termite destruction is longer than in the case of eugenol and thymol As shown in Trial 2, the termicidal action of a-pinene and borneol because of their lower volatility Nevertheless, after an observation time of 69 hours, the mortality is only 27% (a-pinene) or 23% (borneol), which also demonstrates a temporary effectiveness, therefore limited in time, of

a-pinene and borneol.

Claims (6)

  A product or concentrate for combating termites in soil having a temporary efficacy, characterized in that it contains 0.001 to 50% by weight, preferably 0.05 to 5% by weight of a phenol derivative, a monoterpene, a sesquiterpene, and / or a diterpene, or a product for hydrogenation or dehydrogenation of monoterpene, sesquiterpene, and / or diterpene, and   one or more carrier substances or vehicles.   Product or concentrate according to claim 1,   characterized in that it contains as phenol derivative of 4-   allyl-2-methoxyphenol or 2-isopropyl-5-methyl phenol.   3 Product or concentrate according to claim 1, characterized in that it contains an alcohol, a ketone, an aldehyde or an ester of monoterpene, sesquiterpene, and / or diterpene or a hydrogenation or dehydrogenation thereof. 4 Product or concentrate according to claim 3, characterized in that it contains as terpene alcohol menthol and / or borneol or both, in free form or in ester form.   Product or concentrate according to Claim 1, characterized in that carvomentene, limonene, aterpinene, terpinolene, α-tuyene, α-pinene or 2-bornene are contained as monoterpene, singly or mix with each other.   6 Produced or concentrated according to one or more   Claims 1 to 5, characterized in that it contains   as carrier substance or vehicle a chemical solvent   organic or a mixture of solvents.   7 Produced or concentrated according to one or more   Claims 1 to 5, characterized in that it contains   as carrier substance or vehicle of mixed water   with one or more solubilizing agents.   8 Method for controlling termites in soil, exerting a temporary effect using the product   or the concentrate according to any one of claims 1 to   7, characterized in that 1 to 500 g / m 3, advantageously 10 to g / m 3, a phenol derivative, monoterpene, sesquiterpene, and / or diterpene or a product of hydrogenation or dehydrogenation of monoterpene, sesquiterpene, and / or diterpene, the active substance being   in one or more support substances or vehicles.