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EP1246531A1 - Agent herbicide aqueux - Google Patents

Agent herbicide aqueux

Info

Publication number
EP1246531A1
EP1246531A1 EP00991267A EP00991267A EP1246531A1 EP 1246531 A1 EP1246531 A1 EP 1246531A1 EP 00991267 A EP00991267 A EP 00991267A EP 00991267 A EP00991267 A EP 00991267A EP 1246531 A1 EP1246531 A1 EP 1246531A1
Authority
EP
European Patent Office
Prior art keywords
compounds
formula
bromoxynil
composition according
saturated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP00991267A
Other languages
German (de)
English (en)
Inventor
Horst-Werner Wollenweber
Hans-Georg Mainx
Benoít Abribat
Hans De Ruiter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF Personal Care and Nutrition GmbH
Original Assignee
Cognis Deutschland GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cognis Deutschland GmbH and Co KG filed Critical Cognis Deutschland GmbH and Co KG
Publication of EP1246531A1 publication Critical patent/EP1246531A1/fr
Withdrawn legal-status Critical Current

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
    • A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
    • A01N37/34—Nitriles

Definitions

  • the present invention relates to aqueous herbicidal compositions which contain at least one agrochemical active ingredient from the group bromoxynil and its derivatives, and to certain alkoxylated fatty acid esters, the use of such fatty acid esters to increase the penetration of bromoxynil or its derivatives in plant leaves, and a process for combating undesired plant growth.
  • a large number of herbicidal substances are known for controlling weeds, which frequently have only little or no water solubility.
  • An important representative is bromoxynil (3,5-dibromo-4-hydroxybenzonitrile) and its derivatives.
  • Such agrochemical active ingredients are therefore formulated in the form of an aqueous dispersion or emulsion and can then be used without problems, e.g. by spraying onto the plants, the emulsifier also acting as a wetting agent and allowing improved absorption of the active ingredient into the plant. The higher the penetration of the active ingredient, the more effectively and efficiently it can be used.
  • aqueous compositions which contain bromoxynil salts and, as formulation auxiliaries, alkali metal salts of alkyl polyglycol ether phosphate partial esters.
  • bromoxynil octanoate and heptanoate-containing aqueous emulsions which contain polyalkylene oxide-modified silanes or ethoxylated tall oil amides as emulsifiers.
  • aqueous compositions which contain bromoxynil or its derivatives and alkoxylated alcohols determined as emulsifiers enable very high penetration of the herbicide into the plant.
  • the present application therefore relates to aqueous compositions which contain bromoxynil or its derivatives and one or more compounds of the general formula (I)
  • RO- (C 2 H4 ⁇ ) n (C3H 6 0) m -R '(I) in the RO stands for an alcohol radical selected from the group of the branched or linear, saturated or unsaturated monohydric alcohols with 1 to 6 C atoms or the polyols with 2 to 12 C atoms and 2 to 6 hydroxyl groups and R 'represents hydrogen and / or a group -CO- R "in which R" is a branched or linear, saturated or unsaturated alkyl radical having 5 to 29 carbon atoms, n is a number between 1 and 50 and m is zero or a number between 1 and 10 means.
  • the agents according to the invention contain bromoxynil and / or its derivatives, preferably bromoxynil alkyl esters or sodium and / or potassium salts of bromoxynil or its sulfates and carbonates. Agents containing bromoxynil octanoate or heptanoate are particularly preferred.
  • alkoxylated compounds of the formula (I) are known substances which are described, for example, in US 2,678,935, US 3,539,518, US 4,022,808 or GB 1,050,497, the disclosure of which is also part of the present application.
  • the compounds of the formula (I) can be prepared by all methods known to the person skilled in the art, for example by esterification of fatty acids with alkoxylated methanol, as described in US Pat. No. 3,539,518.
  • this process has some disadvantages, it has two stages, the esterification takes a very long time and the products are colored by the high reaction temperatures.
  • fatty acid methyl ester ethoxylates produced in this way have relatively high OH numbers after the esterification, which can be problematic for some applications.
  • Another possibility is the direct reaction of fatty acid esters with alkylene oxides in the presence of transition metal catalysts, as described in US Pat. No. 4,022,808.
  • the fatty acid alkyl ester alkoxylates are preferably prepared by heterogeneously catalyzed direct alkoxylation of fatty acid alkyl esters with ethylene oxide and / or propylene oxide on calcined or hydrophobized hydrotalcites.
  • This synthesis method is described in detail in the laid-open publications WO 90/13533 and WO 91/15441, the disclosure of which is also part of the present application.
  • the resulting products are characterized by a low OH number, the reaction is carried out in one step and light-colored products are obtained.
  • the fatty acid alkyl esters used as starting materials can be obtained from natural oils and fats or produced synthetically.
  • the alkoxylated fatty acid esters contain at least 1 mole of ethylene oxide groups per mole of ester.
  • Compounds of the formula (I) which contain between 1 and 30 moles of ethylene oxide per mole of ester are preferred. It is preferred that, in addition to the ethylene oxide units, between one and 10 propylene oxide groups are contained in the molecule.
  • Those compounds of the formula (I) which contain between 1 and 30 moles of ethylene oxide per mole of ester and 1 to 10 moles of propylene oxide groups are also preferred.
  • mixed ethylene oxide / propylene oxide adducts can be used both those compounds which have been reacted with a mixture of ethylene oxide and propylene oxide, but also compounds which have been reacted in two separate steps with ethylene oxide and propylene oxide.
  • the alkoxides are statistically distributed among the OH groups present.
  • Suitable fatty acid components are natural or synthetic fatty acids, in particular straight-chain, saturated or unsaturated C6-C30 fatty acids, including technical mixtures thereof, as are obtainable by fat cleavage from animal and vegetable fats and oils, e.g.
  • caprylic capric, lauric, laurolein, myristic, myristoleic, palmitic, palmitoleic, oleic, elaidic, arachic, gadoleic, behenic and erucic acids.
  • Straight-chain or branched, saturated or unsaturated monohydric alcohols having 1 to 6 carbon atoms e.g. Methanol, ethanol, n- and i-propanol, n- and i-butanol, pentanol, hexanol, 2-ethylhexanol and cyclohexanol are suitable.
  • Polyols having 2 to 6 carbon atoms for example ethylene glycol, 1, 2-propylene glycol, 1, 2-butylene glycol, glycerol or trimethylolpropane and penthaerythritol can be used.
  • the agents can therefore contain both compounds of the formula (I) which are produced by the reaction of the full ester and the Partial esters can be obtained with alkoxides.
  • the radical R" is in the formula (I) therefore only for a branched or linear, saturated or unsaturated alkyl radical having 5 to 29 carbon atoms.
  • alkoxylated fatty acid esters of the formula (I) whose fatty acid component is selected from linear, unbranched C.sub.1 to C.sub.14 fatty acids and whose alcohol component is methanol, these esters of the formula (I) preferably being between 1 and 3 mol of propylene oxide and contain between 1 and 6 moles of ethylene oxide per mole of ester.
  • Such compounds can be obtained, for example, by the above-described reactions of palmitic, stearic, oleic, linolinic or linolenic acid, lauric and myristic acid or their esters with alkoxides.
  • alkoxylated compounds in which glycerol is used as the alcohol component and the fatty acid component is selected from saturated or unsaturated, branched or unbranched fatty acids with 18 to 22 carbon atoms and the esters contain between 1 and 3 moles of ethylene oxide per mole of ester.
  • Compounds of the formula (I) in which n is 5, 10 or 30 and m is zero are particularly preferred.
  • Such compounds can be obtained, for example, by reacting glycerol esters of natural fatty acids such as, for example, palm, rapeseed, soybean or, preferably, castor oil with ethylene oxide.
  • the compounds of the formula (I) contained in the agents according to the invention are nonionic compounds which are additionally characterized by their HLB value (hydrophilic-lipophilic balance as defined by Griffin; see Römpp Lexikon Chemie, 10th edition 1997, page 1764) can be. Those agents are preferred which contain compounds of the formula (I) with HLB values between 4 and 10 and in particular between 5 and 9.
  • compositions contain at least bromoxynil or its derivatives as herbicidal active ingredients, but mixtures with various other active ingredients are also possible.
  • the agents according to the invention can contain the active ingredient both in enriched form, ie they are concentrates with more than 50% by weight to a maximum of 90% by weight of active ingredient. But they can also be in diluted form. Agents which contain between 0.01 and 5% by weight of bromoxynil or its derivatives, based on the weight of the agents, are preferred. Are other agrochemical Active substances contain them in quantities of 0.01 to 10% by weight.
  • the water content of the agents according to the invention is preferably between 10 and 99.9% by weight.
  • the quantitative ratio between the compounds of the formula (I) and the active compounds is preferably between 1: 1 and 1: 100. Particularly preferred agents are those in which the weight ratio between the compounds of the formula (I) and the active compounds is in the range from 1: 10 to 1: 80 and in particular in the range from 1: 2 to 1: 5.
  • the aqueous compositions according to the invention can also contain other customary ingredients and additives.
  • solvents such as ethylene or propylene glycols and Ci-C ⁇ alcohols
  • solid carriers such as lignin, lignin derivatives or clays and other known emulsifiers or dispersants.
  • agents which contain only emulsifiers of the formula (I) and otherwise do not contain any further emulsifiers or dispersants.
  • agents are preferred which are free of colloids, such as titanium dioxide and / or free of solvents, in particular of mineral oil-based solvents.
  • compositions of the invention are also at temperatures of above 30 C C storage stable and can be without the action of high shear forces, for example by manual stirring to produce.
  • the agents according to the invention are formed without using strong shear forces, for example by simply stirring them by hand.
  • the compounds of the formula (I) can be introduced, for example, in liquid form.
  • the active ingredient is then added and this mixture is dispersed in water.
  • compounds of the formula (I) with melting points above room temperature are used, they can be used in molten form.
  • an aqueous bromoxynil-containing agent as described above being applied to the plant leaves in any amount known to those skilled in the art in such amounts that the plants die.
  • the present invention further relates to the use of compounds of the formula (I) for increasing the penetration of bromoxynil or its derivatives in plant leaves.
  • the emulsifiers were each present in amounts of 0.5% by weight, based on the total agent.
  • the concentration of the sodium salt of bromoxynil was 4.1 mM.
  • 0.1 ⁇ l of the aqueous agent was applied to the first leaves of the deadly cherry. The penetration into the leaves was then measured after 24 hours. The results are shown in Table 2:

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Pest Control & Pesticides (AREA)
  • Plant Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

La présente invention concerne des agents aqueux, comprenant du bromoxynil ou des dérivés de celui-ci. La présente invention concerne également des composés de formule générale (I) RO-(C2H4O)n(C3H6O)m-R', dans laquelle RO représente un radical alcool, choisi dans le groupe des alcools monovalents, ramifiés ou linéaires, saturés ou insaturés, ayant de 1 à 6 atomes de C, ou des polyols ayant de 2 à 12 atomes de C et de 2 à 6 groupes hydroxyle, R' représente hydrogène et/ou un groupe ester -CO-R'', dans lequel R'' représente un radical alkyle, ramifié ou linéaire, saturé ou insaturé, ayant de 5 à 29 atomes de C, n est un nombre compris entre 1 et 50 et m est zéro ou un nombre compris entre 1 et 10. Les composés selon cette invention permettent une pénétration plus importante de la substance active dans la plante.
EP00991267A 2000-01-07 2000-12-23 Agent herbicide aqueux Withdrawn EP1246531A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2000100320 DE10000320A1 (de) 2000-01-07 2000-01-07 Wäßriges herbizides Mittel
DE10000320 2000-01-07
PCT/EP2000/013266 WO2001050861A1 (fr) 2000-01-07 2000-12-23 Agent herbicide aqueux

Publications (1)

Publication Number Publication Date
EP1246531A1 true EP1246531A1 (fr) 2002-10-09

Family

ID=7626857

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00991267A Withdrawn EP1246531A1 (fr) 2000-01-07 2000-12-23 Agent herbicide aqueux

Country Status (6)

Country Link
EP (1) EP1246531A1 (fr)
AU (1) AU3164301A (fr)
BR (1) BR0016923A (fr)
CA (1) CA2396051A1 (fr)
DE (1) DE10000320A1 (fr)
WO (1) WO2001050861A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10063960A1 (de) * 2000-12-20 2002-06-27 Aventis Cropscience Gmbh Herbizide Mittel
CA2676488C (fr) * 2007-01-24 2016-03-22 Ethox Chemicals, Llc Procede pour ameliorer les caracteristiques de transport d'eau de surfaces hydrophobes
CN102271520B (zh) 2008-12-23 2014-08-27 科宁知识产权管理有限公司 农化助剂组合物
EP2218329A1 (fr) 2009-02-13 2010-08-18 Cognis IP Management GmbH Compositions agricoles
EP2266394A1 (fr) 2009-06-17 2010-12-29 Cognis IP Management GmbH Compositions agricoles non aqueuses
EP2329715B1 (fr) 2009-12-01 2013-02-20 Cognis IP Management GmbH Compositions biocides comportant des polyglycosides alkyl branchés
ES2541592T3 (es) 2010-05-08 2015-07-22 Cognis Ip Management Gmbh Composiciones biocidas que comprenden ésteres de oligoglicerol alcoxilado
US20150011573A1 (en) * 2012-01-23 2015-01-08 Syngenta Participations Ag Adjuvant compositions

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2591069B1 (fr) * 1985-12-09 1988-03-18 Produits Ind Cie Fse Produits herbicides a base d'esters de bromoxynil et/ou d'ioxynil
GB8612094D0 (en) * 1986-05-19 1986-06-25 May & Baker Ltd Compositions of matter
DD268147A1 (de) * 1988-01-13 1989-05-24 Akad Wissenschaften Ddr Herbizides mittel
DE19908559A1 (de) * 1999-02-27 2000-09-07 Cognis Deutschland Gmbh PIT-Emulsionen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0150861A1 *

Also Published As

Publication number Publication date
AU3164301A (en) 2001-07-24
CA2396051A1 (fr) 2001-07-19
WO2001050861A1 (fr) 2001-07-19
DE10000320A1 (de) 2001-07-12
BR0016923A (pt) 2002-12-31

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Inventor name: WOLLENWEBER, HORST-WERNER

Inventor name: ABRIBAT, BENOIT

Inventor name: MAINX, HANS-GEORG

Inventor name: DE RUITER, HANS

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