Patent US6370390B1 successfully refreshed from Google Patents.
US4082537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2,6-dinitroaniline herbicidal compositions
Assignee: Wyeth Holdings LLC
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Filing: 1977-03-23
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Granted: 1978-04-04
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Expires: 1997-03-23
Abstract
Abstract The invention is a solid herbicidal composition comprising a molecular solution of sodium dialkyl C 6 -C 8 sulfosuccinate or 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 John Dudkowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:34
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
48 words
A solid herbicidal composition comprising a molecular solution of 1.0% to about 2.0% by weight of a surfactant of sodium dialkyl C 6 -C 8 sulfosuccinate in about 98% to 99% by weight of a compound of the formula: ##STR2## wherein R is 1-ethylbutyl, 1-ethylpropyl, 1-methylpropyl or 1-methylbutyl.
Claim 2
Dependent Claim
48 words
A solid herbicidal composition comprising a molecular solution of 1.0% to about 2.0% by weight of a surfactant of sodium dialkyl C 6 -C 8 sulfosuccinate in about 98% to 99% by weight of a compound of the formula: ##STR2## wherein R is 1-ethylbutyl, 1-ethylpropyl, 1-methylpropyl or 1-methylbutyl.
Claim 3
Dependent Claim
31 words
A composition according to claim 1 comprising a solution of about 1.0% to about 1.5% by weight of sodium dioctyl sulfosuccinate and about 99.0% to about 98.5% by weight of N-(1-ethylpropyl)-2,6-dinitro-3,4-xylidine.
Claim 4
Dependent Claim
67 words
A wettable powder herbicidal composition comprising from about 25% to about 75% of a solid solution of 1.0% to about 2% by weight of a surfactant of sodium dialkyl C 6 -C 8 sulfosuccinate and about 98% to 99% by weight of a compound of the formula: ##STR3## 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
67 words
A wettable powder herbicidal composition comprising from about 25% to about 75% of a solid solution of 1.0% to about 2% by weight of a surfactant of sodium dialkyl C 6 -C 8 sulfosuccinate and about 98% to 99% by weight of a compound of the formula: ##STR3## 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
19 words
A herbicidal composition according to claim 3 wherein the surfactant is sodium dioctyl sulfosuccinate and the herbicide is N-(1-ethylpropyl)-2,6-dinitro-3,4-xylidine.
Claim 7
Dependent Claim
31 words
A herbicidal composition according to claim 4 wherein the solution comprises about 1.0% to 1.5% by weight of sodium dioctyl sulfosuccinate and about 99.0% to about 98.5% 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 about 98% to 99% by weight of a compound of the formula: ##STR4## 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 1% to about 2% by weight of a sodium dialkyl C 6 -C 8 sulfosuccinate, 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 about 98% to 99% by weight of a compound of the formula: ##STR4## 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 1% to about 2% by weight of a sodium dialkyl C 6 -C 8 sulfosuccinate, stirring the mixture until a homogeneous solution results, and then cooling the melt until it resolidifies.
Claim 10
Dependent Claim
67 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 about 99% to about 98.5% by weight of N-(1-ethylpropyl)-2,6-dinitro-3,4-xylidine is melted at 56°-60° C. and 1% to 1.5% by weight of sodium dioctylsulfosuccinate 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)
US3920742A
Cited
US3873689A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-04-03 | 1981-10-03 | 1982-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-03 | 1985-10-03 | 1986-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-03 | 1989-10-03 | 1990-04-04 | $7700.00 | Window Closed / Lapsed |