Suspension concentrates in oil of sulfonylureas and combinations with fluroxypyr or other agrochemicals
OwnerVictor Casana Giner, Miguel Gimeno Sierra +1inventors
InventorsVictor Casana Giner, Miguel Gimeno Sierra, Bárbara Gimeno Sierra
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Abstract
Agricultural suspension in oil of Sulfonylureas and combinations with Fluroxypyr or other appropriate herbicides or agrochemicals are disclosed. The resulting formulations have improved stability regarding physicochemical properties of the formulation, as well as stability of the active ingredients allowing to make mixtures not yet available in the market.
Claims38
Suspension of herbicidal sulfonylureas characterized in that it comprises:
- a. at least a herbicidal sulfonylurea
- b. an oil or mixture of oils;
- wherein the sulfonylurea solubility is less than 10 g/kg
- c. at least a dispersant soluble in oil of the type non-ionic block copolymer or polycondensed fatty acid at 0.1 to 10 wt.-%
- d. at least two non-ionic surfactants of the type C12-C20 alcohol ethoxylated and/or propoxylated at 1 to 40 wt.-% and of the type castor oil ethoxylated at 1 to 40 wt.-%
- e. at least one ionic emulsifier of the type C6-C18 alkyl benzenesulfonic acid, or alkaline and/or earth alkaline salts thereof at 1 to 35 wt.-%
- f. at least a suspending agent at 0.01 to 10%.
Use of a suspoemulsion of at least a suspended sulfonylurea and dissolved Fluroxypyr for the protection cereal crops against undesirable weeds.
Process of preparing a suspoemulsion, containing at least a suspended sulfonylurea in oil and at least one active ingredient soluble in such oil, consisting on the steps of:
- a. Preparing a Premix 1 consisting in at least in one active ingredient that is dissolved in at least one oil
- b. Preparing a Premix 2 consisting in at least two non-ionic surfactants, respectively a fatty alcohol ethoxylated and/or propoxylated and a castor oil ethoxylated and/or propoxylated, that are dispersed or solubilized in an oil
- c. Preparing a Premix 3 consisting in at least one secondary active ingredient being this a sulfonylurea herbicide that is dispersed in an oil with the aid of an oil-soluble dispersant of the type non-ionic block copolymer ethoxylated and/or propoxylated and/or a condensed fatty acid ethoxylated and/or propoxylated
- d. Preparing a Premix 4 consisting in at least a suspending agent dispersed in an oil and at least one ionic surfactant of the type alkylbenzenesulfonate salt
- e. According to the desired final concentration on the active ingredients, an aliquot of each Premix is taken.
- f. The mix of Premixes is subjected to a milling process in order to reduce the particle size of the crystals (as an average) of 1 to 15 μm.
- g. The product is finally cooled down to room temperature naturally and ready for packing.
Dependencies are inferred from the claim text.