Compositions and Methods for Improving the Compatibility of Water Soluble Herbicides Salts and Concentrated Fertilizer

Patent metadata

Field	Value
Publication number	US-2015313212-A1
Application number	US-201314650642-A
Country	US
Kind code	A1
Filing date	Dec 17, 2013
Priority date	Dec 19, 2012
Publication date	Nov 5, 2015
Grant date	—

Abstract

Methods and compositions for improving the compatibility of aqueous herbicide solutions containing at least one of a water soluble salt of a herbicidal active and high concentrations of fertilizer, such as ammonium sulfate, by adding certain polymeric crystallization inhibitors are provided.

First claim

1 . A method of improving the compatibility of an aqueous herbicide solution comprising at least one of a water soluble salt of a herbicidal active and concentrated fertilizer, wherein said concentrated fertilizer comprises >16 wt % of one or more fertilizers, said method comprising adding to the aqueous herbicide solution one or more polymeric crystallization inhibitors of structure I
A x B y C z   I
wherein A is

 wherein R 1 , R 2 , and R 3 are independently H, CH 3 , COOH, or CH 2 COOH, L is a linking group comprising —C(══O)—O—, —C(══O)—N—, —CH 2 —, —O—, —O—C(══O)—, urethane, urea or a direct bond, and R hy is hydrophobic and comprises a linear or branched alkyl, cycloalkyl, aryl, alkaryl or alkoxylated derivative thereof;
B is derived from polymerizing an ethylenically unsaturated carboxylic acid monomer and/or its salts; and
C is optional and is derived from polymerizing an ethylenically unsaturated sulfonic acid monomer or phosphonic acid monomer and/or its salts, and x is the mole percent of A and is from about 5 to 80%, z is the mole % of C and is from about 0 to 25%, and y is the mole % of B, which is from about 1 to 95 mole %.

2 . The method of claim 1 , wherein the herbicidal active is a water soluble salt of aryloxyalkanoic acid, a water soluble salt of a pyridyloxyalkanoic acid, a water soluble salt of glyphosate, or combinations and/or mixtures thereof.

3 . The method of claim 1 , wherein the aryloxyalkanoic acid is 2,4-D, 2,4-DB, dichlorprop, mecoprop, MCPA, or MCPB, and the pyridyloxyalkanoic acid is triclopyr or fluroxypyr.

4 . The method of claim 1 , wherein R hy is a linear aryl moiety.

5 . The method of claim 1 , wherein R hy is naphthyl, ethoxylated naphthyl, phenyl, ethoxylated phenyl, benzyl, or ethoxylated benzyl.

6 . The method of claim 1 , wherein the one or more fertilizers is ammonium sulfate.

7 . The method of claim 1 , further comprising one or more inorganic cations selected from the group consisting of NH 4 + , Na + , ca 2+ , Mg 2+ , Fe 2+ , Fe 3+ , Cu 2+ , Mn 2+ , and Zn 2+ , or one or more organo ammonium cations selected from the group consisting of monomethyl ammonium, isopropyl ammonium, butyl ammonium, dimethyl ammonium, diethyl ammonium, triethyl ammonium, monoethanol ammonium, diethanol ammonium, dimethylethyl ammonium, diethylethanol ammonium, triethanol ammonium, triisopropanol ammonium, tetramethyl ammonium, tetraethyl ammonium and N,N,N-trimethylethanol ammonium (choline), and cations made from dimethylaminopropylamine and diethylenetriamine, or mixtures thereof.

8 . The method of claim 1 , wherein the aqueous herbicide solution is a concentrate or a pre-mix concentrate.

9 . The method of claim 8 , wherein the aqueous herbicide solution is a concentrate containing water soluble salts of 2,4-D and/or glyphosate.

10 . The method of claim 1 , wherein the aqueous herbicide solution is a spray solution.

11 . The method of claim 1 , wherein the polymeric crystallization inhibitor is a co-polymer containing polyacrylate groups, polymethacrylate groups or polymaleate groups, or mixtures thereof.

12 . The method of claim 11 , wherein the co-polymer containing polyacrylate groups comprises hydrophobically modified groups derived from the polymerization of an acrylate monomer and a styrene or substituted styrene monomer.

13 . The method of claim 1 , wherein the polymeric crystallization inhibitor is in the form of a salt.

14 . The method of claim 13 , wherein the salt is an organic amine salt or an inorganic alkaline salt.

15 . The method of claim 13 , wherein the salt contains an organo ammonium cation selected from monomethyl ammonium, isopropyl ammonium, butyl ammonium, dimethyl ammonium, diethyl ammonium, triethyl ammonium, monoethanol ammonium, diethanol ammonium, dimethylethyl ammonium, diethylethanol ammonium, triethanol ammonium, triisopropanol ammonium, tetramethyl ammonium, tetraethyl ammonium and N,N,N-trimethylethanol ammonium (choline), and cations made from dimethylaminopropylamine and diethylenetriamine, or mixtures thereof.

16 . The method of claim 1 , wherein the polymeric crystallization inhibitor of structure I is comprised of, with respect to the total weight of the polymeric crystallization inhibitor of structure I, 5 to 80 mole percent A, and 0 to 25 mole % C, with the rest being B.

17 . An aqueous herbicide solution having improved compatibility, wherein said solution comprises a water soluble salt of one or more herbicidal actives and at concentrated fertilizer, wherein said concentrated fertilizer comprises >16 wt % of at least one fertilizer based on the total weight of the solution, and one or more polymeric crystallization inhibitors of structure I
A x B y C z   I
wherein A is

 wherein R 1 , R 2 , and R 3 are independently H, CH 3 , COOH, or CH 2 COOH, L is a linking group comprising —C(══O)—O—, —C(══O)—N—, —CH 2 —, —O—, —O—C(══O)—, or a direct bond, and R hy is hydrophobic and comprises a linear or branched alkyl, cycloalkyl, aryl, alkaryl or alkoxylated derivative thereof;
B is derived from polymerizing an ethylenically unsaturated carboxylic acid monomer and/or its salts; and
C is optional and is derived from polymerizing an ethylenically unsaturated sulfonic acid monomer or phosphonic acid monomer and/or its salts, and x is the mole percent of A and is from about 5 to 80%, z is the mole % of C and is from about 0 to 25%, and y is the mole % of B, which is from about 1 to 95 mole %.

18 . The aqueous herbicide solution of claim 17 , wherein the water soluble herbicide is a water soluble salt of aryloxyalkanoic acid, a water soluble salt of a pyridyloxyalkanoic acid, a water soluble salt of glyphosate and mixtures or combinations thereof.

19 . The aqueous herbicide solution of claim 17 , wherein the aryloxyalkanoic acid is at least one of 2,4-D, 2,4-DB, dichlorprop, mecoprop, MCPA, or MCPB and the pyridyloxyalkanoic acid is triclopyr or fluroxypyr.

20 . The aqueous herbicide solution of claim 17 , wherein R hy is a linear aryl moiety.

21 . The aqueous herbicide solution of claim 17 , wherein R hy is naphthyl, ethoxylated naphthyl, phenyl, ethoxylated phenyl, benzyl, or ethoxylated benzyl.

22 . The aqueous herbicide solution of claim 17 , wherein the one or more fertilizers is ammonium sulfate, ammonium phosphate, ammonium nitrate or a mixture thereof.

23 . The aqueous herbicide solution of claim 17 , further comprising one or more inorganic cations selected from the group consisting of NH 4 + , Na + , K + , ca 2+ , Mg 2+ , Fe 2+ , Fe 3+ , Cu 2+ , Mn 2+ , and Zn 2+ or one or more organo ammonium cations selected from the group consisting of monomethyl ammonium, isopropyl ammonium, butyl ammonium, dimethyl ammonium, diethyl ammonium, triethyl ammonium, monoethanol ammonium, diethanol ammonium, dimethylethyl ammonium, diethylethanol ammonium, triethanol ammonium, triisopropanol ammonium, tetramethyl ammonium, tetraethyl ammonium, N,N,N-trimethylethanol ammonium (choline), and cations made from dimethylaminopropylamine and diethylenetriamine, or mixtures thereof.

24 . The aqueous herbicide solution of claim 17 , wherein the polymeric crystallization inhibitor is in the

Assignees

• Akzo Nobel Chemicals Int Bv

Inventors

• Alexander Mark
• Rodrigues Klin Aloysius
• Austin Anne

Classifications

• C05C9/00

  Fertilisers containing urea or urea compounds · CPC title

• C05G3/60

  Biocides or preservatives, e.g. disinfectants, pesticides or herbicides; Pest repellants or attractants · CPC title

• A01N25/02 Primary

  containing liquids as carriers, diluents or solvents · CPC title

• A01N39/04

  Aryloxy-acetic acids; Derivatives thereof · CPC title

• C05C1/00

  Ammonium nitrate fertilisers · CPC title