Phytopharmaceutical composition based on fatty acid ester, capric acid, caprylic acid, surfactants, solvents and its use as a herbicide.

Abstract

Phytopharmaceutical composition comprising a combination of component A, comprising an unsaturated C16-18 and C18 fatty acid ester; component B, comprising a surfactant; component C, decanoic acid (capric acid); component D, comprising octanoic acid (caprylic acid); component E, comprising a solvent, ethyl lactate; component F, also a solvent, DMSO; and component G, acting as an antifoaming agent. This solution is intended for the protection of non-agricultural green spaces and / or for controlling weeds, particularly ivy, moss, nettle, thistle, brambles, algae and / or lichens, water primrose, and ragweed.

Description

Title of the invention: Phytopharmaceutical composition based on fatty acid ester, capric acid, caprylic acid, surfactants, solvents and its use as a herbicide. Technical field

[0001] The present invention relates to a phytopharmaceutical composition and its use as a herbicide for the protection of non-agricultural green spaces and / or for controlling weeds, and more particularly ivy, moss, thistle, nettle, brambles, algae and / or lichen, water primrose, ragweed. More specifically, the present invention relates to a composition based on a fatty acid ester of edible oil, a surfactant, capric acid (also called decanoic acid), caprylic acid (also called octanoic acid), a solvent, a second solvent and an anti-foaming agent, all of these components being of natural origin. Prior art

[0002] In the fight against weeds, ivy, moss, thistle, nettle, brambles, algae and / or lichens, the current trend is to use increasingly environmentally friendly compositions, both among farmers and amateur or non-amateur gardeners.

[0003] In France, the 2015 Energy Transition for Green Growth Act has a target of zero pesticides in all public spaces from January 1, 2017. This results in a ban on the use of pesticides by the State, local authorities and public institutions for the maintenance of green spaces and roads. This ban on use was extended to amateur gardeners on January 1, 2019. However, biocontrol products qualified as "low risk" or whose use is authorized in the context of organic farming can be used. This law has given rise to the development of "organic" plant protection products. It has led to the development of alternative methods such as hot air, steam, mechanics, flame and the use of "organic" plant protection products.The category of "organic" plant protection products includes fatty acids such as capric acid, caprylic acid and to some extent fatty acid esters, solvents, natural surfactants, surfactants. Capric acid, also known as decanoic acid, is a saturated acid with 10 carbon atoms, with the crude formula C 10 H 20 02. It is found in coconut oil and palm kernel oil as well as in the milk of various mammals, including goats, hence its name. Caprylic acid, also known as octanoic acid, is a saturated fatty acid with a straight chain containing 8 carbon atoms, with its crude formula. C8H16O2 found in coconut, breast milk and palm oil. Purpose of the invention:

[0004] A first aim of the invention is to propose a herbicidal preparation that is as environmentally friendly as possible. Another aim is to propose a herbicide that is active on all weeds, algae and / or lichens and particularly on ivy, moss, thistle, nettle, brambles, water primrose, ragweed for which the compositions available on the market do not seem to be totally effective, especially on ivy, moss, brambles, thistle, nettle, water primrose, ragweed.

[0005] Another aim: Another aim of the invention is to provide a herbicide that is easy to apply, more especially with a simple sprayer or an airbrush.

[0006] A final goal is to propose a herbicide that does not present any physical risk or danger to the environment. Description of the embodiments

[0007] The invention is based on the observed fact that the fatty acid esters of used or unused food oil and / or fats, if they are sprayed on plants in the pure state or in the form of an emulsion and more precisely on the foliage, form a fine, finely oily layer promoting the fixation of the composition which is the subject of the invention. The addition of a surfactant, two solvents and two acids (capric and caprylic) has made it possible to obtain a very herbicidal compound having a very rapid and effective action on weeds and more precisely on ivy, moss, brambles, thistle, nettle, water primrose and ragweed.

[0008] Weeds or adventitious plants can be defined as any plant growing in a space without having been intentionally put there that year by the professional or amateur.

[0009] The present invention therefore relates to a phytopharmaceutical composition comprising the combination:

[0010] -a constituent A composed of a fatty acid ester of edible oil.

[0011] -a constituent B comprising a surfactant compound including C9-11 alcohol ethoxylates, d-limonene, sodium carbonate, sodium xylenesulfonate, N,N-Dimethyl 9 decenamide, with non-hazardous additives, as a surfactant. This product is manufactured by STEPAN Company under the name Stéposol Citri-Med.

[0012] -a constituent C comprising capric acid as a herbicide.

[0013] -a constituent D comprising caprylic acid as a second herbicide.

[0014] -a constituent E acting as a powerful solvent, ethyl hydroxypropionate (ethyl lactate).

[0015] -a constituent F acting as a second solvent: DMSO (dimethyl sulfoxide).

[0016] -a constituent G acting as an anti-foaming agent; occasionally a deodorant in the form of an essential oil such as lavender essential oil, an emulsion stabilizer.

[0017] -The constituent A of the composition can be indifferent.

[0018] A fatty acid ethyl ester (FAE).

[0019] A fatty acid methyl ester (FAME).

[0020] Esters can be made from:

[0021] -virgin edible oil (VEO) whatever their origins, peanut, rapeseed, sunflower, etc.

[0022] -used food oils and fats regardless of their origins and the composition of the mixture.

[0023] -any mixture of virgin oil, used oil and grease.

[0024] The esters can be manufactured by any process other than esterification. The mass ratio between the total mass of the composition and the component A is between 30 and 80, more precisely between 35 and 55.

[0025] -Component B of the composition comprises at least one surfactant compound including ethoxylated C9-11 alcohol, D-Limonene, sodium carbonate, sodium xylenesulfonate and NN Dimethyl-9 decenamide, with non-hazardous additives, as a surfactant.

[0026] The mass ratio between the total mass of the composition and the constituent B being between 0.01 and 0.08, more precisely between 0.02 and 0.06 and more precisely between 0.03 and 0.05.

[0027] -component C of the composition comprises at least one herbicide including capric acid, also called decanoic acid, the mass ratio between the total mass of the composition and component C being between 0.01 and 0.08, more precisely between 0.02 and 0.06.

[0028] -Component D of the composition comprises at least one herbicide including caprylic acid also called octanoic acid as a second herbicide, the mass ratio between the total mass of the composition and component D being between 0.01 and 0.14, more precisely between 0.04 and 0.12.

[0029] -Component E of the composition comprises at least one lactic acid ester produced from the fermentation of sugar (ethyl lactate) CAS No. 687-47-8(S)-ethyl lactate. The mass ratio between the total mass of the composition and component E being between 0.005 and 0.08, more precisely between 0.01 and 0.06 and more precisely between 0.01 and 0.05.

[0030] -Component F of the composition comprises at least one aprotic organic (organosulfur) polar solvent, dimethyl sulfoxide commonly called DMS O. The mass ratio between the total mass of the composition and component F being between 0.005 and 0.08, more precisely between 0.01 and 0.06.

[0031] -Component G of the composition comprises at least one non-metabolizable foam control agent acting as an anti-foaming agent, allowing uniform distribution of the composition on the vegetation to be treated and easy cleaning of sprayers or airbrushes. The product used is ECLALAB 0333 from Primalab. The quantity used is between 0.01 and 0.03% of the total volume of the composition. The mass ratio between component G and the total mass of the composition is between 0.015 and 0.025 or more precisely between 0.018 and 0.022. The phytopharmaceutical composition which is the subject of the invention may also comprise at least one other non-ionic or anionic surfactant, an emulsion stabilizing agent such as alpha, beta or gamma cyclodextrin, natural or modified lecithin of animal or plant origin, and a deodorant, for example essential oil.

[0032] The phytopharmaceutical composition is characterized in that it is in the form of a slightly oily fluid liquid or in the form of a water-insoluble liquid.

[0033] The phytopharmaceutical composition according to the invention is characterized in that it does not present any physical danger in accordance with Regulation (EC) 1272 / 2008 and its adaptations.

[0034] The phytopharmaceutical composition according to the invention is characterized in that it does not present any danger to the environment, no harm to the environment is known or foreseeable under normal conditions of use, in accordance with Regulation (EC) 1272 / 2008 and its adaptations.

[0035] The process for manufacturing the phytopharmaceutical composition consists firstly in producing an emulsion of fatty acid methyl ester (EMAG) / water / C9-11ethoxylated alcohol, d-Limonene, sodium carbonate, sodium xylenesulfonate, N,N-Dimethyl 9-decedamine with the emulsion stabilizer.

[0036] When the emulsion is made, add the other components, stirring each time for at least 4 minutes.

[0037] -The present invention also relates to the use of the phytopharmaceutical composition for the protection of crops or non-agricultural areas, in particular for combating weeds, algae and / or lichens and more particularly against ivy, moss, brambles, thistle, nettle, water primrose, ragweed.

[0038] -The use of the composition advantageously comprises the application by sprayer or airbrush of a phytopharmaceutical composition which is the subject of the invention in the following proportions:

[0039] 1 liter per 10 square meters with sprayer

[0040] 1 liter for 15 square meters with airbrush. Effectiveness of the composition:

[0041] On ivy, treat a second time after 15 days. Total destruction is obtained 30 days after the start of treatment.

[0042] On weeds, algae and / or lichen the effect is visible within an hour of treatment, total destruction after 15 days.

[0043] On thistle, brambles, moss, the effect is visible within the hour which follows, total destruction after 15 days.

[0044] On water primrose, the effect is visible after 24 hours, total destruction after 15 days.

[0045] On ragweed, the effect is visible after 24 hours, total destruction after 15 days. Terms of Use:

[0046] Moderate exposure to rain after application does not alter the effectiveness of the composition.

[0047] Treat at the start of infestation on dry plants at a temperature between 12 and 25 C°.

[0048] The present invention is illustrated below by the following non-limiting examples. Examples

[0049] The present invention is illustrated below by the following non-limiting examples.

[0050] Example 1: formulation of a non-dilutable mixture

[0051] [Tables 1] SUBSTANCE / PRODUCT PERCENTAGE Fatty acid methyl ester of used edible oils and fats 81.98 Mixture of ethoxylated C9-11 alcohols, d-limonene, sodium carbonate, sodium xylenesulfonate, N,N-Dimethyl 9-decenamide 4 Ethyl lactate 4 Capric acid 5 Caprylic acid 5 Antifoam 1510 0.02 TOTAL 100 Example 2: formulation of a non-dilutable mixture

[0052] [Tables2] SUBSTANCE / PRODUCT PERCENTAGE Fatty acid methyl ester of used edible oils and fats 79.98 Mixture of ethoxylated C9-11 alcohols, d-limonene, sodium carbonate, sodium xylenesulfonate, N,N-Dimethyl 9-decenamide 5 Ethyl lactate 4 Capric acid 6 Caprylic acid 5 Antifoam 1510 0.02 TOTAL 100 Example 3: formulation of a non-dilutable mixture

[0053] [Tables3] SUBSTANCE / PRODUCT PERCENTAGE Fatty acid methyl ester emulsion (FAME), water, C9-11thoxylated alcohol mixture, d-Limonene, sodium carbonate, sodium xylenesulfonate, N,N-Dimethyl 9-decenamide 85.98 Ethyl lactate 4 Capric acid 5 Caprylic acid 5 Antifoam 1510 0.02 TOTAL 100 Example 4: formulation of a non-dilutable mixture

[0054] [Tables4] SUBSTANCE / PRODUCT PERCENTAGE Fatty acid methyl ester emulsion (FAME), water, C9-11thoxylated alcohol mixture, d-Limonene, sodium carbonate, sodium xylenesulfonate, N,N-Dimethyl 9-decenamide 83.98 Ethyl lactate 4 Capric acid 1 Caprylic acid 11 Antifoam 1510 0.02 TOTAL 100 Example 5: formulation of a non-dilutable mixture

[0055] [Tables5] SUBSTANCE / PRODUCT PERCENTAGE Fatty acid methyl ester emulsion (FAME), water, C9-11thoxylated alcohol mixture, d-Limonene, sodium carbonate, sodium xylenesulfonate, N,N-Dimethyl 9-decenamide 83.98 Ethyl lactate 1 DMSO 3 Capric acid 1 Caprylic acid 11 Antifoam 1510 0.02 TOTAL 100 Tests, toxicity:

[0056] All tests were carried out on a full scale, not in a laboratory.

[0057] No physical danger.

[0058] No danger to the environment, no environmental damage is known or foreseeable.

Claims

Claims

1. Phytopharmaceutical composition comprising the combination of: -a component A consisting of an unsaturated C16-18 and C18 fatty acid ester, the mass ratio between the total mass of the composition and component A being between 30 and 80, -a component B comprising a surfactant compound including C9-11 alcohol ethoxylates, d-Limonene, sodium carbonate, sodium xylenesulfonate, N,N-dimethyl-9 decamine, with additives as surfactants, -a component C comprising at least one herbicide including capric acid as herbicide, -a component D comprising at least one herbicide including caprylic acid as second herbicide, -a component E including at least one solvent consisting of ethyl lactate as solvent, -a component F acting as second solvent DMSO, -a constituent G including at least one anti-foaming agent.

2. Phytopharmaceutical composition according to claim 1 including a surfactant constituent B characterized in that the mass ratio between constituent B and the total mass of the composition is between 0.01 and 0.08, more precisely between 0.02 and 0.06 and more precisely between 0.03 and 0.

05.

3. Phytopharmaceutical composition according to claims 1 and 2 including a constituent C consisting of capric acid, characterized in that the mass ratio between the total mass of the composition and the constituent C is between 0.01 and 0.08 or between 0.01 and 0.

06.

4. Phytopharmaceutical composition according to any one of the preceding claims including a constituent D, consisting of caprylic acid, characterized in that the mass ratio between the total mass of the composition and the constituent D is between 0.01 and 0.12 or between 0.04 and 0.

12.

5. Phytopharmaceutical composition according to any one of the preceding claims including a constituent E, solvent, ethyl lactate, characterized in that the mass ratio between the total mass of the composition and the component E is between 0.01 and 0.08, more precisely between 0.01 and 0.

05.

6. Phytopharmaceutical composition according to any one of the preceding claims including a polar solvent constituent F, DMSO, characterized in that the mass ratio between the total mass of the composition and the constituent F is between 0.005 and 0.08, more precisely between 0.01 and 0.

06.

7. Phytopharmaceutical composition according to any one of the preceding claims including a constituent G, anti-foaming agent characterized in that the mass ratio between the constituent G and the total mass of the composition is between 0.015 and 0.025 or more precisely between 0.018 and 0.

022.

8. Phytopharmaceutical composition according to any one of the preceding claims, characterized in that it is in the form of a slightly oily fluid liquid.

9. Phytopharmaceutical composition according to claim 7, characterized in that it is in the form of a liquid insoluble in water.

10. Use of the phytopharmaceutical composition according to any one of the preceding claims for the protection of non-agricultural green spaces, in particular for combating weeds, algae and / or lichens and more particularly against ivy, moss, thistle, brambles, water primrose, ragweed.

11. Use according to the preceding claim, characterized in that the composition is applied by spraying in the following proportions: - with sprayer: 1 liter for 11 square meters, or - with airbrush: 1 liter for 15 square meters.

12. Use according to claim 10 or 11 comprising the application by spraying on weeds and other adventitious plants of the phytopharmaceutical composition according to one of claims 1 to 9 in the pure state.