Solid formulation
View Patent ↗The present invention relates to a solid formulation comprising a) one or more sulfonamides, b) one or more surfactants, and c) at least 2% by weight of water. The solid formulation is suitable for the field of crop protection.
1. A solid formulation comprising
a) 50 to 95% by weight of propoxycarbazone and/or its salts,
b) 5 to 20% by weight of one or more dispersants,
c) 0.1 to 5% by weight of one or more wetting agents,
d) 0.1 to 25% by weight of one or more tackifiers,
e) 0.1 to 25% by weight of one or more carriers, and
f) 2 to 10% by weight of water.
2. The solid formulation as claimed in claim 1 , which comprises, as component a), propoxycarbazone-sodium.
3. The solid formulation as claimed in claim 1 , which comprises, as component b), lignin sulfonate.
4. The solid formulation as claimed in claim 1 , which comprises, as component f), 2.5 to 5% by weight of water.
5. The solid formulation as claimed in claim 1 , which further comprises, one or more agrochemical active substances other than a).
6. The solid formulation as claimed in claim 1 , which comprises, as component c) an alkyl sulfate or alkyl naphthalinsulfonate.
7. The solid formulation as claimed in claim 1 in the form of a powder, a dust or of granules.
8. A method of controlling harmful plants, comprising the step of applying an effective amount of a solid formulation as claimed in claim 1 to the harmful plants, parts of the plants, plant seeds, or area on which the plants grow.
9. A method for preparing a herbicidal composition, comprising a step of combining a solid formulation as claimed in claim 1 with at least one additional solid or liquid substance.
10. The method as claimed in claim 9 , wherein the herbicidal composition is a suspension, emulsion, suspoemulsion or a solution.
11. The solid formulation as claimed in claim 1 , which comprises, as component d), polyvinylpyrrolidone or cross-linked polyvinylpyrrolidone.
12. The solid formulation as claimed in claim 1 in the form of water-soluble granules.
13. A method according to claim 9 , wherein the at least one additional solid or liquid substance is a solid carrier and the herbicidal composition is in the form of solid granules.
14. The solid formulation as claimed in claim 1 , which comprises, as component e), a natural or synthetic silicate or a disaccharide.
15. A process for the preparation of a solid formulation comprising
a) 50 to 95% by weight of propoxycarbazone and/or its salts,
b) 5 to 20% by weight of one or more dispersants,
c) 0.1 to 5% by weight of one or more wetting agents,
d) 0.1 to 25% by weight of one or more tackifiers,
e) 0.1 to 25% by weight of one or more carriers, and
f) 2 to 10% by weight of water,
where (1) the components a)-e) are mixed and subsequently at least 2 to 10% by weight of water is added, or (2) the components a)-e) are mixed with an excess of water and the excess water is subsequently removed in such a way that the water content of the formulation is from 2 to 10% by weight.