WO2013164658A1 - Composition d'herbicide à base de glyphosate - Google Patents

Composition d'herbicide à base de glyphosate Download PDF

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Publication number
WO2013164658A1
WO2013164658A1 PCT/IB2012/002104 IB2012002104W WO2013164658A1 WO 2013164658 A1 WO2013164658 A1 WO 2013164658A1 IB 2012002104 W IB2012002104 W IB 2012002104W WO 2013164658 A1 WO2013164658 A1 WO 2013164658A1
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WO
WIPO (PCT)
Prior art keywords
acid
glyphosate
composition
solution
product
Prior art date
Application number
PCT/IB2012/002104
Other languages
English (en)
Inventor
Edmundo BLUMEL
Original Assignee
Red Surcos, S.A.
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 Red Surcos, S.A. filed Critical Red Surcos, S.A.
Priority to BR112014002598A priority Critical patent/BR112014002598A2/pt
Priority to MX2014002026A priority patent/MX2014002026A/es
Publication of WO2013164658A1 publication Critical patent/WO2013164658A1/fr

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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
    • A01N57/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds
    • A01N57/18—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-carbon bonds
    • A01N57/20—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-carbon bonds containing acyclic or cycloaliphatic radicals

Definitions

  • This invention refers to the field of products and active ingredients for controlling plagues, preferably for the application in agriculture, and more particularly it refers to herbicide compositions prepared as formulations including, as active ingredient, glyphosate in its acid form, with which a product with higher agronomic effectiveness is obtained.
  • Glyphosate is an active ingredient which is very known within the field of agriculture due to its wide range of activity and, in its acid form, corresponds to Formula:
  • Glyphosate currently one of the manly employed agrochemicals, is applied by spraying via different types of spraying machines; therefore it should be dissolved in water for forming what is called as spraying solution.
  • glyphosate in its acid form has a very low solubility in water, therefore it is salified in order to be dissolved and employed in its forms of spraying solution or spraying.
  • Traditional glyphosate formulations, either in liquid or solid form, are, for example, salts of amines, ammonium, potassium, etc., in order for the product to be soluble both in its commercial presentation and in the spraying solution.
  • this patent does not mention anything about achieving sufficiently low pH values, for example such as 1 ,2-1 ,6 (in a 1% solution in distilled water), for obtaining better adherences of spraying due to differences in electric charges between the sprayed product and the leaf mass.
  • This patent does not either discloses anything about the possibility of achieving surface tension values sufficiently low so as to obtain a wetting effect with important values, for example, below 39 dynes/cm in the spraying solution at a doses of use, in order to benefit distribution and diffusion over leaf surface.
  • Other aspect, not less important, about which this patent says nothing, is about the productive process for achieving a correct and total dissolution of the acid glyphosate at high concentrations.
  • composition comprises:
  • the invention provides a new phitosanitary and/or herbicidal composition based on the active ingredient widely known as glyphosate, and more particularly in the acid form thereof, so as to obtain the composition in its acid form which is the most active/effective, in addition o an steric benefit which facilitates translocation of these products of systemic nature, as the acid forms are of lower molecular size than the salified forms.
  • the composition of the invention keeps a high solubilization power in the water of the formula and mainly in the water of the spraying solution at the dose of common use.
  • the invention provides a phitosanitary and/or herbicidal composition based on glyphosate, wherein glyphosate is in its acid form for achieving a greater agronomic effectiveness thereof.
  • the composition comprises:
  • the composition comprises:
  • the composition comprises 320g of 100% acid glyphosate, 1247 g of 85% orthophosphoric acid, 20g of a polyglycolic ether, 20g of isopropyl alcohol, and 30g of hydroxyetil diphosphonic acid.
  • the polyglycolic ether is a polyglycolic ether of a C12-C14 chain modified linear alcohol ethoxylate with 7 moles of ethylene oxide, known in the market under the trade name of Genapol C070.
  • Odor the product has an odor typical of it components.
  • Relative density at (20°C), 1 ,6616.
  • Explosivitv it is established, by bibliographic consultation, by the tests carried out and by the method consulted, that the sample does not have any explosive element.
  • Test temperature room temperature, 20 ⁇ 1°C.
  • pH of the product in 1% aqueous solution 1 ,4. Stability in storage at high temperature
  • the preparation of the formulation indicated above is carried out by means of a procedure which comprises mixing the acid glyphosate with the orthophosphoric acid, operating the latter as a solvent, so that to obtain a strong acid solution.
  • a product which ph, at 1% in demineralized water and at 20°C, is between 1 ,2 and 1 ,5 is obtained.
  • polyglycolic ether is mixed with an amount equivalent to that of the isopropyl alcohol, until obtaining a wetting solution.
  • This mixture defined for the purposes of this description as wetting solution, allows to incorporate it to the solution of strong acids, that is, glyphosate and phosphoric acid, with the polyglycolic ether acting as wetting agent.
  • This wetting agent is pre-dissolved in isopropyl alcohol which acts as solvent of the polyglycolic ether in order for it not to be gelified when being added to the acid solution. Then, such solutions are mixed, that is, the strong acid solution and the wetting solution, with the hydroxyetil diphosphonic acid which acts as anti-crystallizing agent in the spraying solution.
  • the addition of the wetting solution to isopropanol makes that the surface tension of the commercial product added to 1 ,5% in water, as a spraying solution, reach a value of 35-40 dynes/cm, compared to the surface tension of 72 dynes/cm which the water of the spraying solution has.
  • the result of the strong acid solution (orthophosphoric acid and acid glyphosate) is heated at 70°C for making possible a perfect solution and achieving concentrations which are searched for the product of the invention. Afterwards the addition of the remaining excipients of the formula is carried out.
  • a spraying solution which, according to one approach, comprises from 1 to 2 parts of the composition of the invention and about 100 parts of water, wherein the solution has a pH of at least 1 ,2 and, preferably 1 ,4.
  • this glyphosate composition make that the spraying solution be more stable, mainly at cold temperatures due to the addition of the hydroxy ethyl diphosphonic acid.
  • the composition of the invention allows to achieve concentration percentages of the active ingredient, acid glyphosate, of 320 g/l, which exceeds existing commercial formulations of 186 g/l. This is achieved due to the combination of the formula of the invention, that is, strong acid solution, plus wetting solution, plus anti-crystallizing agents, to which it should be added the achievements of the productive process with heat contribution preventing the product obtained from crystallizing and the spraying solution which performed therewith at the doses of common use, even being close to the solubility limit.
  • the formation of a wetting solution with alcohol and the manner of its incorporation, are also an achievement of this invention as a combination of final effective effect was achieved.
  • the wetting agent of this composition Genapol C070, is pre-dissolved in isopropanol (isopropyl alcohol) for forming a solution-wetting agent which is mixed with the mixture of glyphosate and phosphoric acid so as to reduce surface tension of the composition of the invention for being able to be dissolved in the water with which it forms the spraying solution.
  • a surface tension of about 35-39 dynes/cm is achieved in the spraying solution at the concentration of use, which is almost a hyper-wetting effect and allows to omit the addition of co-adjuvants (wetting agents) in addition to the spraying solution.
  • a strengthening of absorption is achieved due to the content of the specific surfactants, that is, ecological ethoxylated fatty alcohols, and the molecule size, since the acid molecule is smaller than that of the salt.
  • the composition has a lower pH, 1 ,5 , preferably 1 ,4 , which generates the product in the spraying solution, and which allows a greater spraying adherence, due to the electric charges of the product, to the leaf mass.
  • composition of the invention over traditional salified formulations are:
  • compositions of this invention have been subjected to field assays, by private and official entities, with excellent results.
  • field assays by private and official entities, with excellent results.
  • the result of one of such assays is transcribed below.
  • Weed monitoring the weed report was performed going over the lot in an X form previous to the test performance. Weeds were recorded using a one-square meter marker, with five sampling points within the lot.
  • Frequency Number of samples in which specie is found/total number of samples.
  • Acid Gly and “Acid Glyf: Invention S: percentage of individuals surviving after the application of each reported species, average of each repetition.
  • DR Damage to remaining plant structures, treated weeds and control plot after 11 days post-application, average of each repetition. Scale amounting to 0 (without damage) to 5 (live weed but without healthy remaining structures).
  • the acid formulation went beyond the absolute sample chemical at length when its doses was increased, which drastically and bluntly enhanced the control of weeds present, making it very recommendable at these concentrations for controlling weeds as the ones found in this test under ideal conditions of growth thereof, which all died 11 days after treatments were performed.
  • Glyphosate formulated as acid at 32,0 % w/v non-salified.
  • SL soluble liquid
  • Soil humidity The test site received 1 irrigation per stratum before being carrying out. Due to which it was full of abundant humidity and population of weeds.
  • Weed monitoring the weed report was performed going over the lot of 25 meters x 24 meters, walking in an X form previous to the test performance. Weeds were recorded using a one-square meter marker in four sampling points within the lot.
  • Frequency Number of samples in which specie is found/total number of samples.
  • DR Damage to remaining plant structures, treated weeds and control plot after 20 days post-application, average of each repetition. Scale amounting to 0 (without damage) to 5 (live weed but without healthy remaining structures).
  • the product of the invention has an excellent effect of control at doses of 1 ,7 and 3,4 liters per hectare, being its use completely recommendable in the control of weeds as the ones presents in this test. It can be noted that at the doses of 1 ,7 l/ha (544g of acid/ha) the product of the invention ha an equal or better performance than the absolute sample (1068g of acid/ha).
  • Acid glyphosate formulation (non-salified) 356 g/l w/v for treatments of chemical fallow.

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

L'invention porte sur une composition d'herbicide à base de glyphosate sous forme acide, présentant une grande efficacité agronomique, comprenant du glyphosate acide, de l'acide orthophosphorique, un éther polyglycolique, de l'alcool isopropylique et de l'acide hydroxyéthyldiphosphonique.
PCT/IB2012/002104 2012-05-02 2012-10-18 Composition d'herbicide à base de glyphosate WO2013164658A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
BR112014002598A BR112014002598A2 (pt) 2012-05-02 2012-10-18 composição herbicida do glifosato; procedimento para a obtenção da composição; e calda de aspersão que inclue a composição
MX2014002026A MX2014002026A (es) 2012-05-02 2012-10-18 Composicion herbicida de glifosato.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AR120101537 2012-05-02
ARP120101537A AR086235A1 (es) 2012-05-02 2012-05-02 Composicion herbicida de glifosato

Publications (1)

Publication Number Publication Date
WO2013164658A1 true WO2013164658A1 (fr) 2013-11-07

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2012/002104 WO2013164658A1 (fr) 2012-05-02 2012-10-18 Composition d'herbicide à base de glyphosate

Country Status (6)

Country Link
AR (1) AR086235A1 (fr)
BR (1) BR112014002598A2 (fr)
CO (1) CO7020926A2 (fr)
MX (1) MX2014002026A (fr)
UY (1) UY34256A (fr)
WO (1) WO2013164658A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991008666A1 (fr) * 1989-12-20 1991-06-27 Cheminova Agro A/S Preparation herbicide contenant de l'acide de glyphosate
US5302579A (en) 1981-11-05 1994-04-12 Union Oil Company Of California Herbicide and method using adduct of glyphosate, sulfuric acid and chalcogen compound
WO2002011536A2 (fr) * 2000-08-07 2002-02-14 Helena Chemical Company Fabrication et utilisation d'une formulation herbicide
WO2003026429A1 (fr) * 2001-09-26 2003-04-03 Platte Chemical Co. Compositions herbicides comprenant une suspension concentree renfermant du glyphosate acide
WO2011057361A1 (fr) * 2009-11-16 2011-05-19 Imtrade Australia Pty Ltd Formulations de glyphosate à haute concentration

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5302579A (en) 1981-11-05 1994-04-12 Union Oil Company Of California Herbicide and method using adduct of glyphosate, sulfuric acid and chalcogen compound
WO1991008666A1 (fr) * 1989-12-20 1991-06-27 Cheminova Agro A/S Preparation herbicide contenant de l'acide de glyphosate
WO2002011536A2 (fr) * 2000-08-07 2002-02-14 Helena Chemical Company Fabrication et utilisation d'une formulation herbicide
US6541424B2 (en) 2000-08-07 2003-04-01 Helena Chemical Company Manufacture and use of a herbicide formulation
WO2003026429A1 (fr) * 2001-09-26 2003-04-03 Platte Chemical Co. Compositions herbicides comprenant une suspension concentree renfermant du glyphosate acide
WO2011057361A1 (fr) * 2009-11-16 2011-05-19 Imtrade Australia Pty Ltd Formulations de glyphosate à haute concentration

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
"HM-2028 - Glyphosate acid - MSDS", 9 November 2006 (2006-11-09), pages 1 - 5, XP055050789, Retrieved from the Internet <URL:http://www.cdms.net/LDat/mp81U001.pdf> [retrieved on 20130123] *
"HM-2028 - Glyphosate, free acid", 1 January 2005 (2005-01-01), U.S.A., pages 1 - 44, XP055050785, Retrieved from the Internet <URL:http://www.agrian.com/pdfs/HM-2028_Label.pdf> [retrieved on 20130123] *
GAT LTD ET AL: "Novel glyphosate acid wettable powder formulation effective in control of weeds (GAT Ltd., Dr Bakel)", RESEARCH DISCLOSURE, MASON PUBLICATIONS, HAMPSHIRE, GB, vol. 271, no. 61, 1 November 1986 (1986-11-01), XP007111144, ISSN: 0374-4353 *

Also Published As

Publication number Publication date
AR086235A1 (es) 2013-11-27
MX2014002026A (es) 2014-07-24
UY34256A (es) 2013-10-31
CO7020926A2 (es) 2014-08-11
BR112014002598A2 (pt) 2017-04-25

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