US4150969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2,6-Dinitroaniline herbicidal compositions
Assignee: Wyeth Holdings LLC
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Filing: 1977-12-29
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Granted: 1979-04-24
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Expires: 1997-12-29
Abstract
Abstract The invention is a solid herbicidal composition comprising a molecular solution of ethoxylated β-diamines in 2,6-dinitroanilines. The solution of the surfactant in the 2,6-dinitroaniline prevents formation of large crystals of the herbicides when in wettable powder form.
Inventors
- 👤 Joseph J. Dudkowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:22
CPC Classifications
A; A01; A01N; A01N25/00; A01N25/12; A01N25/14; A01N33/00; A01N33/16; A01N33/18
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
51 words
A solid herbicidal composition comprising a molecular solution of a surfactant of ethoxylated β-diamines of the formula ##STR3## wherein R is C 9 -C 20 in an amount effective to prevent crystallization of the herbicide and a herbicidal compound of the formula ##STR4## wherein R is 1-ethylbutyl, 1-ethylpropyl, 1-methylpropyl or 1-methylbutyl.
Claim 2
Dependent Claim
51 words
A solid herbicidal composition comprising a molecular solution of a surfactant of ethoxylated β-diamines of the formula ##STR3## wherein R is C 9 -C 20 in an amount effective to prevent crystallization of the herbicide and a herbicidal compound of the formula ##STR4## wherein R is 1-ethylbutyl, 1-ethylpropyl, 1-methylpropyl or 1-methylbutyl.
Claim 3
Dependent Claim
32 words
A composition according to claim 1 comprising a solution of more than 1.0% to about 2.0% by weight of ethoxylated β-diamine and less than 99.0% to about 98% by weight of N-(1-ethylpropyl)-2,6-dinitro-3,4-xylidine.
Claim 4
Dependent Claim
70 words
A wettable powder herbicidal composition comprising from about 25% to about 75% of a solid solution of a surfactant of ethoxylated β-diamines of the formula ##STR5## wherein R is C 9 -C 20 in an amount effective to prevent crystallization of the herbicide and a herbicidal compound of the formula ##STR6## wherein R is 1-ethylbutyl, 1-ethylpropyl, 1-methylpropyl or 1-methylbutyl and from about 75% to about 25% of a solid carrier.
Claim 5
Dependent Claim
70 words
A wettable powder herbicidal composition comprising from about 25% to about 75% of a solid solution of a surfactant of ethoxylated β-diamines of the formula ##STR5## wherein R is C 9 -C 20 in an amount effective to prevent crystallization of the herbicide and a herbicidal compound of the formula ##STR6## wherein R is 1-ethylbutyl, 1-ethylpropyl, 1-methylpropyl or 1-methylbutyl and from about 75% to about 25% of a solid carrier.
Claim 6
Dependent Claim
12 words
A herbicidal composition according to claim 3 wherein the herbicide is N-(1-ethylpropyl)-2,6-dinitro-3,4-xylidine.
Claim 7
Dependent Claim
33 words
A herbicidal composition according to claim 4 wherein the solution comprises more than 1.0% to about 2.0% by weight of ethoxylated β-diamine and less than 99.0% to about 98.0% by weight of N-(1-ethylpropyl)-2,6-dinitro-3,4-xylidine.
Claim 8
Independent Claim
79 words
A method of preventing the formation of crystals in wettable powder formulations of compounds of the formula ##STR7## wherein R is 1-ethylbutyl, 1-ethylpropyl, 1-methylpropyl or 1-methylbutyl which comprises melting the compound at about its melting point, adding a surfactant of ethoxylated β-diamines of the formula ##STR8## wherein R is C 9 -C 20 in an amount effective to prevent crystallization of the dinitroaniline, stirring the mixture until a homogeneous solution results, and then cooling the melt until it resolidifies.
Claim 9
Independent Claim
79 words
A method of preventing the formation of crystals in wettable powder formulations of compounds of the formula ##STR7## wherein R is 1-ethylbutyl, 1-ethylpropyl, 1-methylpropyl or 1-methylbutyl which comprises melting the compound at about its melting point, adding a surfactant of ethoxylated β-diamines of the formula ##STR8## wherein R is C 9 -C 20 in an amount effective to prevent crystallization of the dinitroaniline, stirring the mixture until a homogeneous solution results, and then cooling the melt until it resolidifies.
Claim 10
Dependent Claim
69 words
A method of preventing the formation of crystals in wettable powder formulations of N-(1-ethylpropyl)-2,6-dinitro-3,4-xylidine according to claim 6 wherein 99% to about 98.5% by weight of N-(1-ethylpropyl)-2,6-dinitro-3,4-xylidine is melted at 56°-60° C. and more than 1% to about 2.0% by weight of ethoxylated β-diamine is added to the melt and the mixture is stirred at about 56°-60° C. for a sufficient period of time to obtain a homogeneous solution.
References Cited (Backward Citations)
US3154397A
Cited
US3920742A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-04-23 | 1982-10-23 | 1983-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-23 | 1986-10-23 | 1987-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-23 | 1990-10-23 | 1991-04-24 | $7700.00 | Window Closed / Lapsed |