US4174960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pesticidal formulation
Assignee: Lilly Industries Ltd
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Filing: 1978-02-02
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Granted: 1979-11-20
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Expires: 1998-02-02
Abstract
Abstract There are described novel pesticidal formulations in concentrate form which are aqueous emulsions containing 10% to 75% by weight of an herbicidal 2,6-dinitroaniline derivative, such as trifluralin, up to 60% by weight of water-immiscible solvent, 0.5% to 10% by weight of an emulsifying agent and 15% to 70% by weight of an aqueous solution of an inorganic salt, such as sodium chloride. The concentration of the inorganic salt in the aqueous solution is at least 5% by weight. The aqueous solution may additionally contain urea. The novel formulations are readily dispersible in large volumes of water in preparation for spraying and present a reduced fire risk compared with conventional concentrated formulations of 2,6-dinitroaniline herbicides.
Inventors
- 👤 Barry A. Hendriksen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:18
CPC Classifications
A; A01; A01N; A01N33/00; A01N33/16; A01N33/18; A01N25/00; A01N25/02; A01N25/04; A01N41/00; A01N41/02; A01N41/04; A01N41/06; A01N41/10
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
127 words
A herbicidal formulation in concentrate form being an aqueous emulsion comprising 10% to 75% by weight of a herbicide being one or more herbicidal 2,6-dinitroaniline derivative having a solubility in water at 25° C. less than 100 parts per million by weight and a melting point in the range of from -10° C. to 150° C., 0% to 60% by weight of a substantially water-immiscible solvent, the herbicide and the solvent forming a homogeneous disperse phase, 0.5% to 10% by weight of an emulsifying agent, and 15% to 70% by weight of an aqueous solution of an inorganic salt, the concentration of the inorganic salt in the aqueous solution and the pH of said aqueous solution being not greater than 9 being at least 5% by weight.
Claim 2
Dependent Claim
127 words
A herbicidal formulation in concentrate form being an aqueous emulsion comprising 10% to 75% by weight of a herbicide being one or more herbicidal 2,6-dinitroaniline derivative having a solubility in water at 25° C. less than 100 parts per million by weight and a melting point in the range of from -10° C. to 150° C., 0% to 60% by weight of a substantially water-immiscible solvent, the herbicide and the solvent forming a homogeneous disperse phase, 0.5% to 10% by weight of an emulsifying agent, and 15% to 70% by weight of an aqueous solution of an inorganic salt, the concentration of the inorganic salt in the aqueous solution and the pH of said aqueous solution being not greater than 9 being at least 5% by weight.
Claim 3
Dependent Claim
63 words
A formulation according to claim 1 which contains from 15% to 70% by weight of the herbicide, from 0% to 45% by weight of the solvent, from 0.9% to 6% by weight of the emulsifying agent and from 20% to 40% by weight of the aqueous solution, the concentration of inorganic salt in the aqueous solution being from 10% to 20% by weight.
Claim 4
Dependent Claim
50 words
A formulation according to claim 1 wherein no solvent is present, the herbicide is isopropalin which forms 60% to 75% by weight of the formulation, the emulsifying agent forms 2% to 6% by weight of the formulation and the aqueous solution forms 19% to 38% by weight of the formulation.
Claim 5
Dependent Claim
94 words
A formulation according to claim 1 which contains 15% to 65% by weight of the herbicide which is a 2,6-dinitroaniline derivative of formula ##STR3## where R 1 is selected from the group consisting of C 2-4 alkyl and chloroethyl, R 2 is selected from the group consisting of C 2-4 alkyl, chloroethyl and 2-methallyl and R 3 is selected from the group consisting of hydrogen and amino, 10% to 45% by weight of the solvent, 0.9% to 6% by weight of the emulsifying agent, and 20% to 40% by weight of the aqueous solution.
Claim 6
Dependent Claim
37 words
A formulation according to claim 4 wherein R 1 is selected from the group consisting of ethyl and propyl, R 2 is selected from the group consisting of propyl, butyl and 2-methallyl and R 3 is hydrogen.
Claim 7
Dependent Claim
73 words
A formulation according to claim 1 wherein the herbicide is trifluralin which forms 40% to 65% by weight of the formulation, the solvent forms 10% to 25% by weight of the formulation, the emulsifying agent forms 0.9% to 6% by weight of the formulation and the aqueous solution forms 20% to 35% by weight of the formulation, the concentration of the inorganic salt being at least 10% by weight of the aqueous solution.
Claim 8
Dependent Claim
45 words
A formulation according to claim 6 wherein the trifluralin forms from 40% to 60% by weight of the formulation, the solvent forms from 15% to 25% by weight of the formulation, and the emulsifying agent forms from 2% to 6% by weight of the formulation.
Claim 9
Dependent Claim
17 words
A formulation according to claim 7 wherein the trifluralin forms from 40% to 50% of the formulation.
Claim 10
Dependent Claim
19 words
A formulation according to claim 1 wherein the water-immiscible solvent is xylene or a mixture of xylene and naphthalene.
Claim 11
Dependent Claim
23 words
A formulation according to claim 1 wherein the emulsifying agent is a non-ionic surfactant or a blend of two or more non-ionic surfactants.
Claim 12
Dependent Claim
23 words
A formulation according to claim 1 wherein the emulsifying agent has a calculated hydrophile-lipophile balance in the range of from 14 to 18.
Claim 13
Dependent Claim
20 words
A formulation according to claim 11 wherein the calculated hydrophile-lipophile balance is in the range of from 15 to 17.
Claim 14
Dependent Claim
14 words
A formulation according to claim 12 wherein the calculated hydrophile-lipophile balance is substantially 16.
Claim 15
Dependent Claim
17 words
A formulation according to claim 1 wherein the inorganic salt forms substantially 15% of the aqueous solution.
Claim 16
Dependent Claim
20 words
A formulation according to claim 1 wherein the inorganic salt is selected from sodium chloride, potassium chloride and calcium chloride.
Claim 17
Dependent Claim
13 words
A formulation according to claim 15 wherein the inorganic salt is sodium chloride.
Claim 18
Dependent Claim
21 words
A formulation according to claim 1 wherein the aqueous solution additionally includes urea at a concentration up to 25% by weight.
Claim 19
Dependent Claim
112 words
A herbicidal formulation in concentrate form being an aqueous emulsion comprising: 45% to 60% by weight of trifluralin, 15% to 25% by weight of substantially water-immiscible aromatic hydrocarbon solvent, the trifluralin and the solvent forming a homogeneous disperse phase, 3% to 6% by weight of a non-ionic surfactant or a blend of such surfactants, having a calculated hydrophile-lipophile balance in the range of from 15 to 17, and 22% to 32% by weight of an aqueous solution of sodium chloride, the sodium chloride concentration being in the range 10% to 18% by weight of the aqueous solution, the aqueous solution additionally including 0% to 5% of urea by weight of the solution.
Claim 20
Dependent Claim
112 words
A herbicidal formulation in concentrate form being an aqueous emulsion comprising: 45% to 60% by weight of trifluralin, 15% to 25% by weight of substantially water-immiscible aromatic hydrocarbon solvent, the trifluralin and the solvent forming a homogeneous disperse phase, 3% to 6% by weight of a non-ionic surfactant or a blend of such surfactants, having a calculated hydrophile-lipophile balance in the range of from 15 to 17, and 22% to 32% by weight of an aqueous solution of sodium chloride, the sodium chloride concentration being in the range 10% to 18% by weight of the aqueous solution, the aqueous solution additionally including 0% to 5% of urea by weight of the solution.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-11-19 | 1983-05-21 | 1983-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-19 | 1987-05-21 | 1987-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-19 | 1991-05-21 | 1991-11-20 | $7700.00 | Window Closed / Lapsed |