WO2012156770A2 - Pesticide, agent nettoyant domestique ou industriel, produit cosmétique ou lubrifiant contenant un tensioactif constitué d'un alcool d'alkyle ramifié polyéthoxylé ou polypropoxylé, ou un tensioactif constitué d'une amine d'alkyle ramifiée polyéthoxylée ou polypropoxylée et leurs mélanges - Google Patents
Pesticide, agent nettoyant domestique ou industriel, produit cosmétique ou lubrifiant contenant un tensioactif constitué d'un alcool d'alkyle ramifié polyéthoxylé ou polypropoxylé, ou un tensioactif constitué d'une amine d'alkyle ramifiée polyéthoxylée ou polypropoxylée et leurs mélanges Download PDFInfo
- Publication number
- WO2012156770A2 WO2012156770A2 PCT/IB2011/001068 IB2011001068W WO2012156770A2 WO 2012156770 A2 WO2012156770 A2 WO 2012156770A2 IB 2011001068 W IB2011001068 W IB 2011001068W WO 2012156770 A2 WO2012156770 A2 WO 2012156770A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- polyethoxylated
- polypropoxylated
- branched alkyl
- amine
- surfactant
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/30—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests characterised by the surfactants
Definitions
- the objective is to harmonize the rules on the sales authorization of pesticides and to select for the same applications the pesticide which is more health and environment friendly.
- Glyphosate is by far the most sold pesticide worldwide, and its production volumes were even increased by the introduction in many countries of the genetic modified seeds resistant to glyphosate.
- genetic modified crops are not able to kill weeds, but they are able to resist to non selective herbicides, like glyphosate.
- a surfactant for such large volume herbicide as glyphosate has to present a high efficacy, availability of raw materials, low toxicity and but must have a low cost.
- a good surfactant allows a reduction of the quantity of active substance per hectar, and improves the speed of absorption of the water solution of the glyphosate formulation by the leaves of the weeds. This makes possible that an application of glyphosate is effective even if it rains a shorter time after application as compared to traditional formulations.
- surfactant molecules act by making a monolayer around the particle or droplet to be dispersed or emulsified in water.
- a surfactant molecule consists of a lipophilic part atracted by the particle or droplet to be emulsified and a hydrophilic part which is oriented in the opposite direction.
- the surfactant orients itself on the intersurface water / air with the lipophilic part of the molecules oriented to the air, and the hydrophilic part directed to the center of the water drop.
- the surfactant builds like a fat thin layer on the water surface.
- the droplets in contact to the surface of the leaves are not spherical, which would make them to fall to ground.
- the droplets show a large contact surface on the leaves, because the attraction of the solution molecules to the leaves is bigger than the attraction of the molecules of the solution among themselves. This larger contact surface improves the absorption speed of the active substance.
- Some surfactant molecules have the tendency to come together in clusters building micelles, instead of going apart from each other and increasing the interaction with the solvent and reducing its surface tension.
- micelles reduces the amount of surfactant available to reduce the surface tension.
- glyphosate is an aminoacide, therefore presenting an amphoteric character, and an isoelectric point in water solutions.
- the solubility of glyphosate is only 1 ,5% at room temperature and the pH of this solution is around 2, which is the isoelectric point.
- a longer chain of the alkyl group of the surfactant normally reduces its biodegradability and increases its toxicity.
- Alkyl groups contained in 2-propylheptyl alcohol polyethoxylated or polypropoxylated cause a favorable behavior in the daphnia test, in the test of algal growth inhibition, eye irritation test, endocrine disruption and in biodegradability, as compared to linear C16 - C18 alkyi groups from natural fat.
- a surfactant consisting of branched alkyi groups as an alcohol polyethoxylated or polypropoxylated or the corresponding amine.
- the lipophilic properties of the solution should not be two strong, in order to avoid the insolubility of glyphosate.
- the formulation obtained with branched alkyi alcohol polyethoxylated or polypropoxylated is far better concerning toxicity than any tested alkylamine polyethoxylated or polypropoxilated , with alkyi chain branched or not.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Agronomy & Crop Science (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Detergent Compositions (AREA)
Abstract
Les amines d'alkyle linéaires polyéthoxylées contenant 16 à 20 atomes de carbone dans leur chaîne alkyle sont largement utilisées en tant que tensioactifs pour pesticides. Les effets négatifs de ces tensioactifs sur l'environnement et la santé ont obligé les chercheurs à étudier de nouveaux tensioactifs. Les alcools d'alkyle ramifiés polyéthoxylés ou polypropoxylés, et les amines d'alkyle ramifiées polyéthoxylées ou polypropoxylées avec chaînes d'alkyle contenant 10 à 12 atomes de carbone présentent une tension de surface très inférieure à celle des amines d'alkyle linéaires polyéthoxylées ou polypropoxylées. Cette tension de surface inférieure en solution hydrique résulte de l'empêchement stérique de la formation de micelles causée par les ramifications. Les micelles constituées de molécules de tensioactifs réduisent la quantité de tensioactifs disponibles se déposant dans l'interphase, ce qui réduit la tension de surface. L'absence de fonction amine explique la toxicité inférieure de l'alcool d'alkyle ramifié polyéthoxylé ou polypropoxylé par rapport aux amines d'alkyle linéaires ou ramifiées polyéthoxylées ou polypropoxylées, ladite toxicité étant mesurée par des tests d'inhibition de la croissance des algues, des tests sur les daphnies, des tests d'irritation oculaire chez le lapin et les tests de la perturbation endocrinienne. Les alcools d'alkyle ramifiés polyéthoxylés ou polypropoxylés présentent cependant une solubilité limitée par rapport aux amines d'alkyle linéaires polyéthoxylées existantes. Il s'avère que l'ajout d'un additif à la préparation qui augmente la nature lipophile crée un compromis entre les caractéristiques hydrophiles de la préparation pour résoudre les composants polaires ioniques ou forts de la préparation et les caractéristiques lipophiles pour résoudre l'alcool d'alkyle ramifié polyéthoxylé ou polypropoxylé. Utilisés comme pesticides, les tensioactifs de l'invention respectent l'environnement car ils réduisent la quantité de pesticides par hectare et la toxicité de la pulvérisation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/IB2011/001068 WO2012156770A2 (fr) | 2011-05-18 | 2011-05-18 | Pesticide, agent nettoyant domestique ou industriel, produit cosmétique ou lubrifiant contenant un tensioactif constitué d'un alcool d'alkyle ramifié polyéthoxylé ou polypropoxylé, ou un tensioactif constitué d'une amine d'alkyle ramifiée polyéthoxylée ou polypropoxylée et leurs mélanges |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/IB2011/001068 WO2012156770A2 (fr) | 2011-05-18 | 2011-05-18 | Pesticide, agent nettoyant domestique ou industriel, produit cosmétique ou lubrifiant contenant un tensioactif constitué d'un alcool d'alkyle ramifié polyéthoxylé ou polypropoxylé, ou un tensioactif constitué d'une amine d'alkyle ramifiée polyéthoxylée ou polypropoxylée et leurs mélanges |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2012156770A2 true WO2012156770A2 (fr) | 2012-11-22 |
| WO2012156770A3 WO2012156770A3 (fr) | 2013-04-25 |
Family
ID=44532947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IB2011/001068 WO2012156770A2 (fr) | 2011-05-18 | 2011-05-18 | Pesticide, agent nettoyant domestique ou industriel, produit cosmétique ou lubrifiant contenant un tensioactif constitué d'un alcool d'alkyle ramifié polyéthoxylé ou polypropoxylé, ou un tensioactif constitué d'une amine d'alkyle ramifiée polyéthoxylée ou polypropoxylée et leurs mélanges |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2012156770A2 (fr) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5258359A (en) | 1991-08-02 | 1993-11-02 | Monsanto Company | Glyphosant-containing herbicidal compositions comprising acetylenic diol rainfastness enhancing agents |
| US5663117A (en) | 1993-12-17 | 1997-09-02 | Monsanto Company | Alkoxylated primary alcohol surfactants providing enhanced efficacy and/or rainfastness to glyphosate formulations |
| US5912209A (en) | 1993-12-17 | 1999-06-15 | Monsanto Company | Surfactants providing enhanced efficacy and/or rainfastness to glyphosate formulations |
| US6734141B2 (en) | 2001-11-21 | 2004-05-11 | Goldschmidt Ag | Use of non-spreading silicone surfactants in agrochemical compositions |
| EP1541023A2 (fr) | 2003-12-10 | 2005-06-15 | Goldschmidt GmbH | Combinaison ayant une activité biocide pour des applications agricoles |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU691228B2 (en) * | 1993-12-17 | 1998-05-14 | Monsanto Technology Llc | Surfactants providing enhanced efficacy and/or rainfastness to pesticide formulations |
| GB9412722D0 (en) * | 1994-06-24 | 1994-08-17 | Zeneca Ltd | Herbicidal composition |
| US5710104A (en) * | 1996-04-03 | 1998-01-20 | Albemarle Corporation | Glyphosate compositions comprising polyethoxylated monohydric primary alcohols |
| US5703016A (en) * | 1996-09-30 | 1997-12-30 | Albemarle Corporation | Surfactant composition for use with glyphosate comprising dimethyl amine oxide, polyethoxylated alcohol, and pyridinium halide |
| SE514862C2 (sv) * | 1999-02-24 | 2001-05-07 | Akzo Nobel Nv | Användning av en kvartär ammoniumglykosidtensid som en effektförhöjande hjälpkemikalie för gödningsmedel eller pesticider samt kompositioner innehållande pesticider eller gödningsmedel |
| RU2336700C2 (ru) * | 2003-08-04 | 2008-10-27 | Дау Агросайенсиз Ллс | Высококонцентрированные гербицидные препараты глифосата низкой вязкости |
| PT103372B (pt) * | 2005-10-24 | 2007-11-09 | Pedro Brito Correia | Nova formulação de glifosato resistente à chuva |
| US20110039703A1 (en) * | 2009-08-17 | 2011-02-17 | Pedro Brito Correia | Herbicide consisting of a glyphosate formulation containing as a surfactant a branched alkylamine where the nitrogen atom is connected to a chain of polypropylenoxide or to a copolymer of ethylene oxide and propylene oxide |
-
2011
- 2011-05-18 WO PCT/IB2011/001068 patent/WO2012156770A2/fr active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5258359A (en) | 1991-08-02 | 1993-11-02 | Monsanto Company | Glyphosant-containing herbicidal compositions comprising acetylenic diol rainfastness enhancing agents |
| US5658853A (en) | 1991-08-02 | 1997-08-19 | Monsanto Company | Glyphosate herbicidal compositions having enhanced rainfastness comprising an acetylenic diol and an alkyl polyglycoside |
| US5663117A (en) | 1993-12-17 | 1997-09-02 | Monsanto Company | Alkoxylated primary alcohol surfactants providing enhanced efficacy and/or rainfastness to glyphosate formulations |
| US5912209A (en) | 1993-12-17 | 1999-06-15 | Monsanto Company | Surfactants providing enhanced efficacy and/or rainfastness to glyphosate formulations |
| US6734141B2 (en) | 2001-11-21 | 2004-05-11 | Goldschmidt Ag | Use of non-spreading silicone surfactants in agrochemical compositions |
| EP1541023A2 (fr) | 2003-12-10 | 2005-06-15 | Goldschmidt GmbH | Combinaison ayant une activité biocide pour des applications agricoles |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012156770A3 (fr) | 2013-04-25 |
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