U.S. patent application number 12/763566 was filed with the patent office on 2010-10-28 for high-strength, herbicidal compositions of glyphosate and 2,4-d salts.
This patent application is currently assigned to DOW AGROSCIENCES LLC. Invention is credited to Mei Li, Lei Liu, David G. Ouse, Kuide Qin, Holger Tank, Stephen L. Wilson.
Application Number | 20100273654 12/763566 |
Document ID | / |
Family ID | 42235835 |
Filed Date | 2010-10-28 |
United States Patent
Application |
20100273654 |
Kind Code |
A1 |
Li; Mei ; et al. |
October 28, 2010 |
HIGH-STRENGTH, HERBICIDAL COMPOSITIONS OF GLYPHOSATE AND 2,4-D
SALTS
Abstract
The mixture of certain amine salts of glyphosate and 2,4-D
allows the preparation of high-strength liquid compositions
containing up to greater than 450 gae/L of total active ingredient
loading if the pH is adjusted to about 6.0 to about 8.0.
Compositions are particularly well-suited for application to crops
that are resistant or tolerant to both glyphosate and 2,4-D.
Inventors: |
Li; Mei; (Westfield, IN)
; Tank; Holger; (Zionsville, IN) ; Liu; Lei;
(Carmel, IN) ; Qin; Kuide; (Westfield, IN)
; Wilson; Stephen L.; (Indianapolis, IN) ; Ouse;
David G.; (Indianapolis, IN) |
Correspondence
Address: |
DOW AGROSCIENCES LLC
9330 ZIONSVILLE RD
INDIANAPOLIS
IN
46268
US
|
Assignee: |
DOW AGROSCIENCES LLC
Indianapolis
IN
|
Family ID: |
42235835 |
Appl. No.: |
12/763566 |
Filed: |
April 20, 2010 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
61171592 |
Apr 22, 2009 |
|
|
|
Current U.S.
Class: |
504/206 |
Current CPC
Class: |
A01N 25/30 20130101;
A01N 39/04 20130101; A01N 25/02 20130101; A01N 57/20 20130101; A01N
39/04 20130101; A01N 57/20 20130101; A01N 2300/00 20130101; A01N
57/20 20130101 |
Class at
Publication: |
504/206 |
International
Class: |
A01N 57/18 20060101
A01N057/18; A01P 13/02 20060101 A01P013/02 |
Claims
1. A homogeneous, stable, high-strength aqueous herbicidal
concentrate composition comprising: (a) water, (b) a glyphosate
amine salt, and (c) a 2,4-D amine salt, in which (i) the glyphosate
amine salt and the 2,4-D amine salt are independently primary,
secondary, tertiary or quaternary alkylamine, alkanolamine or
alkylalkanolamine salts, wherein the alkyl and alkanol groups are
saturated and contain from C.sub.1-C.sub.3 carbon atoms
individually, with the proviso that no more than one of the amine
salts in the composition can be a primary amine salt, (ii) the
composition contains a total active ingredient loading of at least
350 gae/L of the glyphosate amine salt and the 2,4-D amine salt,
(iii) the weight ratio of the glyphosate amine salt to the 2,4-D
amine salt is from about 1:2.3 to about 2.3:1, and (iv) the pH is
from about 6.0 to about 8.0.
2. A composition of claim 1 which contains a total active
ingredient loading of greater than about 450 grams of acid
equivalent of the glyphosate amine salt and the 2,4-D amine
salt.
3. A composition of claim 1 in which the weight ratio of the
glyphosate amine salt to the 2,4-D amine salt is about 1:1.
4. A composition of claim 1 in which the pH is from about 6.5 to
about 7.5.
5. A composition of claim 1 in which one or more of the amine salts
is a dimethylamine, trimethylamine, isopropylamine,
dimethylethanolamine, diethylethanolamine, diethanol-amine, choline
or tetramethylammonium salt.
6. A composition of claim 1 which includes at least one cosolvent
in amounts between about 20 g/L and about 200 g/L.
7. A composition of claim 1 which includes at least one efficacy
enhancing surfactant in amounts between about 20 g/L and about 200
g/L.
8. A method of controlling undesirable vegetation in crops that are
resistant or tolerant to both glyphosate and 2,4-D which comprises
applying to the undesirable vegetation and the crops that are
resistant or tolerant to both glyphosate and 2,4-D a water-diluted
composition of any one of claims 1-7.
Description
[0001] This application claims the benefit of U.S. Provisional
Application Ser. No. 61/171,592 filed on 22 Apr. 2009. The present
invention relates to high-strength, liquid compositions containing
salts of N-(phosphonomethyl)glycine (glyphosate) and
(2,4-dichlorophenoxy)acetic acid (2,4-D).
BACKGROUND OF THE INVENTION
[0002] Glyphosate and 2,4-D are known, effective herbicides.
Various formulations are currently marketed, many of which are
aqueous solutions that can be used as is or diluted to prior to
use. Typically both the glyphosate and the 2,4-D are provided as
salts, which exhibit sufficiently high solubility in water to
provide a high-strength herbicidal formulation. Pre-mix
formulations of glyphosate isopropylamine (IPA) salt and 2,4-D IPA
salt are well known in the industry and typically used in burn-down
applications. However, the total active ingredient loading (grams
acid equivalent per liter [gae/L] glyphosate IPA+gae/L 2,4-D IPA)
in the commercially available formulations is limited to less than
about 320 gae/L if the ratio of glyphosate (gae/L) to 2,4-D (gae/L)
is between the desired ratio of 1:2.3 to 2.3:1. A higher-strength
formulation is desirable for a variety of economic and
environmental reasons. For example, it is desirable to provide a
high-strength formulation to reduce shipping and handling costs and
to reduce the amount of packaging material that must be disposed.
The high-strength formulations should be stable and retain potency
during storage and shipping. Furthermore, the high-strength
formulation should be a homogeneous liquid that is stable at
temperatures at least as high as 50.degree. C. and should not
exhibit any precipitation at temperatures at least as low as
0.degree. C.
SUMMARY OF THE INVENTION
[0003] It has now been found that the mixture of certain amine
salts of glyphosate and 2,4-D allows the preparation of
high-strength liquid compositions containing up to or greater than
450 gae/L of total active ingredient loading if the pH is adjusted
to about 6.0 to about 8.0. The present invention provides a
homogeneous, stable, high-strength aqueous herbicidal concentrate
composition comprising: [0004] (a) water, [0005] (b) a glyphosate
amine salt, and [0006] (c) a 2,4-D amine salt,
[0007] in which (i) the glyphosate amine salt and the 2,4-D amine
salt are independently primary, secondary, tertiary or quaternary
alkylamine, alkanolamine or alkylalkanolamine salts, wherein the
alkyl and alkanol groups are saturated and contain from
C.sub.1-C.sub.3 carbon atoms individually, with the proviso that no
more than one of the amine salts in the composition can be a
primary amine salt, (ii) the composition contains a total active
ingredient loading of at least 350 gae/L of the glyphosate amine
salt and the 2,4-D amine salt, (iii) the weight ratio of to the
glyphosate amine salt to the 2,4-D amine salt is from about 1:2.3
to about 2.3:1, and (iv) the pH is from about 6.0 to about 8.0.
Furthermore, one or more cosolvents and/or efficacy-enhancing
surfactants can optionally be incorporated into the high-strength
composition while still maintaining the high loading.
[0008] In still yet another form, the present invention provides a
method of treating plants with the herbicidal composition. The
composition is typically applied as a post-emergent herbicide.
While the composition can be applied as a highly concentrated
solution, it is preferably diluted with water prior to application
to the plants. While the composition can be used in a burn-down
situation, it is particularly well-suited for application to crops
that are resistant or tolerant to both glyphosate and 2,4-D.
DETAILED DESCRIPTION OF THE INVENTION
[0009] In general the present invention is directed to a
homogeneous, stable, high-strength aqueous herbicidal concentrate
composition containing a mixture of amine salts of glyphosate and
2,4-D. More specifically, the present invention provides a
high-strength herbicidal concentrate composition comprising: [0010]
(a) water, [0011] (b) a glyphosate amine salt, and [0012] (c) a
2,4-D amine salt,
[0013] in which (i) the glyphosate amine salt and the 2,4-D amine
salt are independently primary, secondary, tertiary or quaternary
alkylamine, alkanolamine or alkylalkanolamine salts, with the
proviso that no more than one of the amine salts in the composition
can be a primary amine salt, wherein the alkyl and alkanol groups
are saturated and contain from C.sub.1-C.sub.3 carbon atoms
individually, (ii) the composition contains a total active
ingredient loading of at least 350 gae/L of the glyphosate amine
salt and the 2,4-D amine salt, (iii) the weight ratio of the
glyphosate amine salt to the 2,4-D amine salt is from about 1:2.3
to about 2.3:1, and (iv) the pH is from about 6.0 to about 8.0.
[0014] The amine salts of glyphosate and 2,4-D of the present
invention may be primary, secondary, tertiary or quaternary
alkylamines, alkanolamines or alkylalkanolamines, with the proviso
that no more than one of the amine salts in the composition is a
primary amine salt. The alkyl groups of such amines are saturated
and contain from C.sub.1-C.sub.3 carbon atoms individually.
Examples of preferred amine salts include dimethylamine,
trimethylamine, isopropylamine, dimethylethanolamine,
diethylethanolamine, diethanolamine, choline or tetramethylammonium
salts. While it is often preferred that the amine salts of both
glyphosate and 2,4-D be the same, they can be different,
particularly when one of the amine salts is primary.
[0015] The herbicidal composition includes the glyphosate amine
salt and the 2,4-D amine salt in an amount sufficient to provide
the high-strength composition. In preferred embodiments, the
high-strength herbicidal composition includes a total active
ingredient loading greater than about 350 gae/L based on the total
glyphosate amine salt and 2,4-D amine salt; more preferably, the
high-strength herbicidal composition includes greater than about
450 gae/L based on the total glyphosate amine salt and 2,4-D amine
salt; most preferably, the high-strength herbicidal composition
includes greater than about 470 gae/L based on the total glyphosate
amine salt and 2,4-D amine salt.
[0016] In the compositions of the present invention, the weight
ratio of the glyphosate amine salt to the 2,4-D amine salt is from
about 1:2.3 to about 2.3:1, more preferably from about 1:1.5 to
about 1.5:1 and most preferably about 1:1 on an ae basis.
[0017] In preferred embodiments, the present invention includes a
high-strength herbicidal composition that is storage stable at high
temperatures. That is, the composition forms a homogeneous, stable
solution that does not exhibit cloudiness under the storage
conditions. More preferably, the compositions of the present
invention are stable at temperatures greater than or equal to about
50.degree. C.; most preferably, at temperature equal to or greater
than about 60.degree. C.
[0018] Furthermore, the herbicidal composition also does not
exhibit separation or precipitation (or crystallization) of any of
the components at low temperatures. For example, the high-strength
composition remains a solution at temperatures below about
0.degree. C., more preferably at temperatures below about
-10.degree. C., and most preferably at temperatures below about
-20.degree. C.
[0019] To maintain such stability the pH of the composition of the
present invention should be adjusted to from between about 6.0 to
about 8.0. The preferred pH is from between about 6.5 to about 7.5.
The pH of the composition of the present invention can be
conveniently controlled by preparing the high-strength aqueous
herbicidal concentrate composition by neutralizing the glyphosate
and 2,4-D acids with aqueous solutions of the appropriate amines
and using a slight excess of amine to adjust the pH to the desired
range.
[0020] The high-strength herbicidal composition may optionally
include one or more cosolvent and/or an efficacy-enhancing amount
of a surfactant or surfactant mixture. In such embodiments, the
cosolvent and/or surfactant is selected to be compatible in
solution with the high concentration composition. By use of the
term "compatible" in the present application, it will be understood
by those skilled in the art to include within its meaning that the
resulting solution does not exhibit a phase separation or
precipitation in the composition that can be initially observed as
a cloudiness and which is typically determined at a specified
temperature.
[0021] Cosolvents conventionally used in the art of formulation and
which may also optionally be used in the present compositions are
solvents which are totally miscible with water, particularly in the
presence of electrolytes. Cosolvents particularly well-suited for
use in the present invention are preferably alcohols and glycols
containing free hydroxy groups and include methanol, ethanol,
isopropanol, amyl alcohol, ethylene glycol, propylene glycol,
glycerine, propylene glycol monomethyl ether and diethylene glycol
monomethyl ether and the like.
[0022] The cosolvent can be included in the herbicidal composition
in a desired concentration. If a cosolvent is used, the herbicidal
composition includes the cosolvent in amounts between about 20 g/L
and about 200 g/L, more preferably in amounts between about 50 g/L
and about 100 g/L.
[0023] Surfactants conventionally used in the art of formulation
and which may also optionally be used in the present compositions
are described, inter alia, in "McCutcheon's Detergents and
Emulsifiers Annual," MC Publishing Corp., Ridgewood, N.J., 1998 and
in "Encyclopedia of Surfactants," Vol. I-III, Chemical Publishing
Co., N.Y., 1980-81. Surfactants particularly well-suited for use in
the present invention are preferably to selected to include one or
more of the following types of compounds: alkylamine surfactants
having 8 to 22 carbon atoms, such as Armeen DMTD, and Duomeen TTM;
alkoxylated alkylamine surfactants having 8 to 22 carbon atoms and
a total of 1-20 alkylene oxide groups, available for example from
Akzo Nobel as Ethomeen.TM. C/12, Ethomeen.TM. T/12, Ethoduomeen
T/13, and Propomeen T/12 respectively; etheramine surfactants, such
as Tomah E-14-2, Tomah E-14-5 and Tomah Pa.-17 from Air Products;
amine oxide surfactants, such as Aromox C/12 and Aromox DMC from
Akzo Nobel, Ammonyx LO and Ammonyx CDO from Stepan, and Tomah
AO-14-2 from Air Products; amidoamine surfactant, such as Adsee
C80W from Akzo Nobel; quaternary ammonium surfactants, such as Akzo
Nobel's Arquad T/50, Arquad APA-E, Duoquad T/50, Ethoquad.TM. C/12,
and Ethoquad.TM. 18/12, and Air Products' Tomah Q-14-2; amphoteric
surfactants, such as Dehyton AB-30 from Cognis, Geronol.TM. CF/AS
30 from Rhodia, and Tego.TM. Betaine F 50 from Goldschmidt; alcohol
ethoxylates, such as Tergitol.TM. 15S20; alcohol ethoxylate
phosphate esters such as Geranol CF/AR from Rhodia;
alkylpolyglycosides such as Akzo Nobel AG 6202 or AG 6210; or
anionic ester derivatives of alkylpolyglycosides such as the
Eucarol.TM. AGE surfactants.
[0024] The surfactant can be included in the herbicidal composition
in a desired concentration. If surfactants are used, preferably the
desired concentration is sufficient to enhance the herbicidal
activity of the resulting composition over that observed with a
comparable herbicidal composition without the surfactants. More
preferably, the herbicidal composition includes the surfactant in
amounts between about 20 g/L and about 200 g/L; most preferably in
amounts between about 50 g/L and about 120 g/L.
[0025] The compositions described herein can be applied to plants
in an amount sufficient to induce an herbicidal effect. For
example, a composition prepared according the present invention can
be applied as an aqueous solution to plants including the plants'
leaves, stems, branches, flowers and/or fruit. The herbicidal
composition can be applied in an herbicidally effective amount
sufficient to inhibit plant growth or kill individual plants.
[0026] The agricultural compositions prepared according to the
present invention are highly effective as an herbicide composition
against a variety of weeds. The compositions of the present
invention can be used as is or combined with other components
including other agriculturally acceptable additives commonly used
in formulated agricultural products, such as antifoam agents,
compatibilizing agents, sequestering agents, neutralizing agents
and buffers, corrosion inhibitors, dyes, odorants, penetration
aids, wetting agents, spreading agents, drift control agents,
dispersing agents, thickening agents, freeze point depressants,
antimicrobial agents, crop oil, other biologically and/or
agriculturally active components and the like. The concentrated
agricultural compositions are typically diluted in water and then
applied by conventional means well known to those in the art.
[0027] The concentrated agricultural compositions of the present
invention are particularly well-suited for application to crops
that are resistant or tolerant to both glyphosate and 2,4-D. They
can, further, be used in conjunction with glufosinate, dicamba or
imidazolinones on glufosinate-tolerant, dicamba-tolerant or
imidazolinone-tolerant crops.
Example 1
Preparation of Glyphosate Amine Salt Solutions
[0028] 504 g glyphosate technical (equivalent to 480 g glyphosate
acid) was reacted with 1.25 molar equivalents of amine aqueous
solutions to form a homogeneous clear solution at ambient
temperature. Then, the pH of the solution was adjusted to a range
of 6-7.5 (Table 1) using additional amine. Water was added, if
needed, to reach a concentration of glyphosate given in Table
1.
TABLE-US-00001 TABLE 1 Glyphosate acid equivalent Sample content ID
Amine type (ae wt %) (g ae/l) pH G-1-1 Dimethylamine (DMA) 39.8 480
6.1 G-1-2 Dimethylamine (DMA) 39.9 480 7.4 G-1-3 Dimethylamine
(DMA) 40.5 489 7.3 G-2 Isopropylamine (IPA) 40.7 480 6.13 G-3-1
Dimethylethanolamine 38.9 480 6.0 (DMEnolA) G-3-2
Dimethylethanolamine 38.7 475 7.1 (DMEnolA) G-4 Diethylethanolamine
38.8 481 6.16 (DEEnolA) G-5 Choline hydroxide 37.1 463 7.2
(Choline) G-6 Tetramethylammonium 38.5 462 7.3 hydroxide
(TetraMA)
Example 2
Preparation of 2,4-D Amine Salt Solutions
[0029] 495 g 2,4-D technical (equivalent to 480 g 2,4-D acid) was
reacted with 1.02 molar equivalents or higher amount of amine
aqueous solutions to form a homogeneous clear solution at ambient
temperature. Then, additional water was added, if needed, to reach
a concentration of 2,4-D given in Table 2.
TABLE-US-00002 TABLE 2 Sample 2,4-D acid equivalent content ID
Amine type (ae wt %) (gae/L) pH D-1 Dimethylamine (DMA) 41.4 482
7.1 D-2-1 Isopropylamine (IPA) 41.6 480 7.3 D-2-2 Isopropylamine
(IPA) 41.7 480 9.3 D-3-1 Dimethylethanolamine 40.6 486 8.35
(DMEnolA) D-3-2* Dimethylethanolamine 40.3 480 7.8 (DMEnolA) D-3-3
Dimethylethanolamine 40.6 486 7.1 (DMEnolA) D-4 Diethylethanolamine
40.5 477 7.2 (DEEnolA) D-5 Choline hydroxide 41.0 492 7.6 (Choline)
D-6 Tetramethylammonium 41.0 474 7.4 hydroxide (TetraMA) *10 wt %
propylene glycol was incorporated in the composition.
Example 3
Preparation of Glyphosate and 2-4-D Compositions
[0030] Compositions were prepared by mixing a glyphosate salt
solution in Table 1 with a 2,4-D salt solution in Table 2 and water
if needed. The examples illustrated in Table 3 showed the storage
stability of the prior art compositions containing glyphosate and
2,4-D isopropylamine (IPA) salts. The examples given in Table 4
demonstrate the invention.
TABLE-US-00003 TABLE 3 Glyphosate salt Weight ratio solution, 2,4-D
salt Total active of Formulation (amine solution, content
glyphosate/ Storage stability* ID type) (amine type) (gae/L) 2,4-D
Ambient -10.degree. C. 1 G-2, (IPA) D-2-1, (IPA) 400 1:2.3 x x 2
G-2, (IPA) D-2-1, (IPA) 400 1:1 x x 3 G-2, (IPA) D-2-1, (IPA) 400
2.3:1 x x 4 G-2, (IPA) D-2-2, (IPA) 400 1:2.3 x x 5 G-2, (IPA)
D-2-2, (IPA) 400 1:1 x x 6 G-2, (IPA) D-2-2, (IPA) 400 2.3:1 x x 7
G-2, (IPA) D-2-2, (IPA) 360 1:2.3 8 G-2, (IPA) D-2-1, (IPA) 360 1:1
PS 9 G-2, (IPA) D-2-2, (IPA) 320 1:1 10 G-2, (IPA) D-2-2, (IPA) 320
2.3:1 PS Storage stability: " " indicated a clear, homogeneous,
free-flowing fluid without any phase separation or crystallization
after at least 3 days of storage at a given temperature; "x"
indicated crystallization of either salt or water in the
formulation; "PS" indicated a phase separation being observed in
the formulation.
TABLE-US-00004 TABLE 4 Total Weight ratio Glyphosate salt 2,4-D
salt active of Formulation solution, solution, content glyphosate/
Storage stability* ID (amine type) (amine type) (gae/L) 2,4-D
ambient -10.degree. C. 11 G-1-1, (DMA) D-1, (DMA) 480 1:2.3 x 12
G-1-2, (DMA) D-1, (DMA) 480 1:2.3 13 G-1-2, (DMA) D-1, (DMA) 440
1:2.3 14 G-1-2, (DMA) D-1, (DMA) 440 1:1 15 G-1-2, (DMA) D-1, (DMA)
400 1:2.3 16 G-1-2, (DMA) D-1, (DMA) 400 1:1 17 G-1-2, (DMA) D-1,
(DMA) 400 2.3:1 PS 18 G-3-1, D-3-1, 480 1:2.3 (DMEnolA) (DMEnolA)
19 G-3-2, D-3-1, 480 1:2.3 (DMEnolA) (DMEnolA) 20 G-3-2, D-3-1, 480
1:1 (DMEnolA) (DMEnolA) 21 G-3-1, D-3-3, 480 2.3:1 (DMEnolA)
(DMEnolA) 22 G-3-1, D-3-1, 440 1:1 (DMEnolA) (DMEnolA) 23 G-3-2,
D-3-1, 440 1:1 (DMEnolA) (DMEnolA) 24 G-3-1, D-3-1, 400 1:1
(DMEnolA) (DMEnolA) 25 G-4, (DEEnolA) D-4, 480 1:2.3 (DEEnolA) 26
G-4, (DEEnolA) D-4, 480 1:1 PS (DEEnolA) 27 G-4, (DEEnolA) D-4, 480
2.3:1 PS (DEEnolA) 28 G-4, (DEEnolA) D-4, 440 1:1 (DEEnolA) 29 G-4,
(DEEnolA) D-4, 440 2.3:1 PS (DEEnolA) 30 G-5, (Choline) D-5,
(Choline) 480 1:2.3 31 G-5, (Choline) D-5, (Choline) 480 1:1 32
G-5, (Choline) D-5, (Choline) 440 1:2.3 33 G-5, (Choline) D-5,
(Choline) 440 1:1 34 G-5, (Choline) D-5, (Choline) 440 2.3:1 35
G-6, (TetraMA) D-6, 470 1:2.3 (TetraMA) 36 G-6, (TetraMA) D-6, 440
1:1 (TetraMA) 37 G-6, (TetraMA) D-6, 400 2.3:1 (TetraMA) 38 G-2,
(IPA) D-1, (DMA) 480 1:2.3 39 G-2, (IPA) D-3-1, 480 1:2.3 x
(DMEnolA) 40 G-1-1, (DMA) D-3-1, 480 1:2.3 (DMEnolA) 41 G-1-2,
(DMA) D-3-1, 480 1:2.3 (DMEnolA) 42 G-1-1, (DMA) D-3-3, 480 1:1 PS
(DMEnolA) 43 G-3-2, D-1, (DMA) 480 1:2.3 (DMEnolA) Storage
stability: " " indicated a clear, homogeneous, free-flowing fluid
without any phase separation or crystallization after at least 3
days of storage at a given temperature; "x" indicated
crystallization of either salt or water in the formulation; "PS"
indicated a phase separation being observed in the formulation.
Example 4
Glyphosate and 2,4-D Compositions with Improved Cold Temperature
Storage Stability by Using Co-Solvent
[0031] Composition (with composition ID of 44) was prepared by
mixing 10 g of glyphosate DMA salt solution (G-1-3 in Table 1) with
10 g of 2,4-D DMEnolA salt solution (D-3-2 in to Table 2,
containing 10 wt % propylene glycol as cosolvent) at a weight ratio
of 1:1. The total active content is 480 gae/L. The composition
contains 5 wt % propylene glycol. It formed a clear, homogeneous
solution after preparation at ambient temperature. It was storage
stable at 54, 0, -10, and -20.degree. C. for at least 2 weeks,
without phase separation or crystal formation being observed. The
compositions were clear, homogeneous, free-flowing fluids.
Example 5
Glyphosate and 2,4-D Compositions with Built-in Surfactants
[0032] A glyphosate DMA salt concentrate was prepared by reacting
435 g glyphosate technical (equivalent to 414 g glyphosate acid)
with 475 g of a 40% aqueous dimethylamine solution in 90 g water.
The resulting solution had a pH of 7.2 and a density of 1.218
g/mL.
[0033] Then, a 2,4-D DMEnolA salt concentrate was prepared by
reacting 547.5 g 2,4-D technical (equivalent to 536 g 2,4-D acid)
with 217 g of dimethylethanolamine in 260 g water. The resulting
solution had a pH of 7.5 and a density of 1.254 g/mL.
[0034] Formulations were prepared by mixing 10.63 g or 11.19 g of
the above 2,4-D DMEnolA salt concentrate, 1.5 g of propylene
glycol, 13.77 g or 14.5 g of the above glyphosate DMA salt
concentrate, and 1.88 g of surfactants in a 25 mL volumetric flask.
Additional water was added, if needed, to reach the target volume.
The resulting formulations contained 228 or 240 gae/L 2,4-D DMEnolA
salt and 228 or 240 gae/L glyphosate DMA salt. The examples given
in Table 5 demonstrate the invention.
TABLE-US-00005 TABLE 5 Composition Glyphosate 2,4-D ID content
(gae/L) content (gae/L) Surfactant 45 240 240 Ethomeen T/12 46 240
240 Ethomeen C/12 47 228 228 Armeen DMTD 48 228 228 Duomeen TTM 49
228 228 Ethoduomeen T/13 50 228 228 Propomeen T/12 51 228 228
Arquad T-50 52 240 240 Duoquad T-50 53 228 228 AG 6202 54 240 240
Tomah Q-14-2 55 240 240 Aromox C/12 56 240 240 Geronol CF/AR 57 240
240 Stepan's X-3705-44 58 240 240 Stepan's X-3600-98 59 240 228
Ammonyx LO 60 240 228 Geronol CF/AS 30 + Adsee C80W (w/w = 2/1) 61
240 228 Geronol CF/AS 30 + Ethomeen T/12 (w/w = 2/1) Ethomeen C/12
and T/12 are ethoxylated (2) alkylamine from Akzo Nobel Armeen DMTD
is a tallowalkyl-dimethylamines from Akzo Nobel Duomeen TTM is a
N,N,N'-trimethyl-N'-tallow-1,3-diaminopropane from Akzo Nobel
Ethoduomeen T/13 is an ethoxylated (3) N-tallow-1,3-diaminopropane
from Akzo Nobel Propomeen T/12 is a
N-tallowalkyl-1,1'-iminobis-2-propanol from Akzo Nobel Arquad T-50
is a tallowalkyltrimethyl ammonium chloride from Akzo Nobel Duoquad
T-50 is a N,N,N',N',N'-pentamethyl-N'-tallow-1,3-propane diammonium
dichloride from Akzo Nobel AG 6202 is an alkylpolyglucoside from
Akzo Nobel Tomah Q-14-2 is an isodecyloxypropyl methyl
bis(2-hydroxyethyl) ammonium chloride from Air Products Aromox C/12
is an ethoxylated (2) alkylamine oxide from Akzo Nobel Geronol
CF/AR is an alcohol ethoxylate phosphate ester from Rhodia Stepan's
X-3705-44 is a proprietary alkylamine oxide from Stepan Stepan's
X-3600-98 is a proprietary esterquad from Stepan Ammonyx LO is a
lauramine oxide from Stepan Adsee C80W is an alkyl
Amidopropyldimethylamine from Akzo Nobel
[0035] All formulations in Table 5 are homogeneous and free-flowing
liquid at a temperature ranging from 54.degree. C. to -10.degree.
C. without any phase separation or crystal formation being observed
for at least 2 weeks.
[0036] The viscosity of composition #54 was measured with a TA
AR1000 Rheometer. The results were showed in Table 6.
TABLE-US-00006 TABLE 6 Temperature (.degree. C.) Viscosity (mPa s)
-10 490 0 244 10 125 20 72 40 36
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