Novel sulfonamide-comprising solid formulations
The present invention relates to solid water-dispersible formulation comprising one or more herbicidally active compounds from the group of the sulfonamides of the formula (I) and their salts, one or more safeners, one or more solvents, one or more carrier materials selected from carriers having low and/or high absorbency, one or more customary auxiliaries and additives, selected from emulsifiers, antifoams, wetting agents and dispersants; where the safeners and solvents are in a particular ratio, and these two components together are also in a particular ratio to the carriers having high absorbency used. The formulations according to the invention are suitable for use in crop protection.
1 . A solid water-dispersible formulation comprising:
(a) one or more active compounds from the group of the sulfonamides of the formula (I) and their salts,
(b) one or more safeners,
(c) one or more solvents,
(d) one or more carrier materials, selected from one or more of the following groups:
(d-1) carriers with low absorbency,
(d-2) carriers with high absorbency;
(e) one or more customary auxiliaries and additives, selected from one or more of the following groups
(e-1) emulsifiers,
(e-2) antifoams,
(e-3) wetting agents,
(e-4) dispersants;
where
component (b) to component (c) is in the following ratio: (b):(c) in general from 0.3 to 2.0:1, preferably from 0.4 to 1.5:1, particularly preferably from 0.5 to 1.0:1; and
where at the same time the sum of components (b) and (c) to component (d-2) is in the following ratio: [(b)+(c)]:(d-2) in general from 1.7 to 3.9:1, preferably from 1.85 to 3.5:1, particularly preferably from 2.0 to 3.0:1.
2 . The solid water-dispersible formulation as claimed in claim 1 which comprises, as component (a), herbicidally active compounds from the group of the phenylsulfonamides, such as phenylsulfonylureas and heteroarylsulfonylureas, and also their salts.
3 . The solid water-dispersible formulation as claimed in claim 1 which comprises, as component (a), active compounds from the group consisting of azimsulfuron and its salts, such as the sodium salt, bensulfuron-methyl, chlorimuron-ethyl, chlorsulfuron, ethametsulfuron-methyl, flupyrsulfuron-methyl and its salts, such as the sodium salt, metsulfuron-methyl, nicosulfuron and its salts, such as the sodium salt, rimsulfuron and its salts, such as the sodium salt, sulfometuron-methyl, thifensulfuron-methyl and its salts, such as the sodium salt, tribenuron-methyl, triflusulfuron-methyl, methyl 4-[(4,5-dihydro-3-methoxy-4-methyl-5-oxo-1H-1,2,4-triazol-1-yl)carboxamidosulfonyl]-5-methylthiophene-3-carboxylate and its sodium salt, and also foramsulfuron and its sodium salt.
4 . The solid water-dispersible formulation as claimed in claim 1 which comprises, as component (b), safeners from the group consisting of mefenpyrdiethyl, isoxadifen-ethyl, 4-cyclopropylaminocarbonyl-N-(2-methoxybenzoyl)benzenesulfonamide (cyprosulfamide), 4-isopropylaminocarbonyl-N-(2-methoxybenzoyl)benzenesulfonamide.
5 . The solid water-dispersible formulation as claimed in claim 1 which comprises, as component (c), solvents from the group of the aromatic and aliphatic hydrocarbons.
6 . The solid water-dispersible formulation as claimed in claim 1 which comprises, as component (d-1), carriers from the group of the natural tectosilicates.
7 . The solid water-dispersible formulation as claimed in claim 1 which comprises, as component (d-2), carriers from the group consisting of the calcium silicates and precipitated silicic acids.
8 . The solid water-dispersible formulation as claimed in claim 1 , in which emulsifiers from the group of the formulations of salts of alkylated aromatic sulfonic acids with alkylated copolymers of ethylene oxide and propylene oxide are present as component (e-1).
9 . The solid water-dispersible formulation as claimed in claim 1 which comprises, as component (e-2), antifoams from the group of the suspoemulsions of hydrophobicized silicic acid particles in aqueous emulsion concentrates based on liquid silicone surfactants and solid antifoams.
10 . The solid water-dispersible formulation as claimed in claim 1 which comprises, as component (e-3), wetting agents from the group of the block copolymers of propylene oxide and ethylene oxide on ethylenediamine, the salts of the alkylated naphthalenesulfonic acids and the salts of dioctylsulfosuccinic acid.
11 . The solid water-dispersible formulation as claimed in claim 1 which comprises, as component (e-4), dispersants from the group of the condensates of aromatic sulfonic acids with formaldehyde and salts thereof.
12 . The solid water-dispersible formulation as claimed in claim 1 , additionally comprising, as component (f), one or more herbicidally active compounds from the group of the carbamates, thiocarbamates, halogenacetanilides, substituted phenoxy-, naphthoxy- and phenoxyphenoxycarboxylic acid derivatives and also heteroaryloxyphenoxyalkanecarboxylic acid derivatives, such as quinolyloxy-, quinoxalyloxy-, pyridyloxy-, benzoxazolyloxy- and benzothiazolyloxyphenoxyalkanecarboxylic esters, cyclohexanedione derivatives, phosphorus-containing herbicides of the glufosinate type or of the glyphosate type, S-(N-aryl-N-alkylcarbamoylmethyl)dithiophosphoric esters, and also sulfonamides and salts thereof which are not included in the scope of the formula (I) (component a), such as representatives from the group of the phenylsulfonylureas, such as iodosulfuron-. methyl and its sodium salt (iodosulfuron-methyl-sodium) and mesosulfuron-methyl and its sodium salt, and also representatives from the group of the other sulfonamides, such as amidosulfuron and its sodium salt (amidosulfuron-methyl-sodium).
13 . The solid water-dispersible formulation as claimed in claim 1 , additionally comprising, as component (g), one or more auxiliaries and additives different from component (e), from the group of the disintegrants, such as crosslinked polyvinylpyrrolidones, binders (tackifiers), such as polyvinylpyrrolidone types, and agents for adjusting the pH, such as NaOH and Na 2 CO.
14 . A process for preparing a solid water-dispersible formulation as claimed in claim 1 which comprises combining the individual components in the respective ratios defined by the preparation.
15 . A method for controlling harmful plants, which comprises applying an effective amount of a solid water-dispersible formulation as claimed in claim 1 to the harmful plants, to parts of the plants, to plant seeds and/or to the area on which the plants grow.
16 . Method of use for controlling harmful plants using a solid water-dispersible formulation as claimed in claim 1 .
17 . Method of use for preparing a herbicidal composition using a solid water-dispersible formulation as claimed in claim 1 .
18 . A herbicidal composition, comprising a solid water-dispersible formulation as claimed in claim 1 .
19 . A method for controlling harmful plants which comprises applying an effective amount of a herbicidal composition as claimed in claim 18 to the harmful plants, to parts of the plants, to plant seeds and/or to the area on which the plants grow.
20 . Method of use for controlling harmful plants using a herbicidal composition as claimed in claim 18.