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US 12,108,757 B2Granted
Agrochemical formulation based on emulsion polymers
AssigneeBayer CropScience AG
InventorsMalcolm Faers, Howard Roger Dungworth, James Richard Wickson, Kathryn Marie Knight, James Alexander Flavell
Life of this patent
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Abstract
The present invention relates to agrochemical compositions based on emulsion polymers; their use for foliar application and their application in aqueous crop protection flowable formulations for controlling agricultural pests, weeds or diseases and reducing the wash-off of active ingredients by rainfall.
Claims10
An agrochemical composition comprising
- a) an aqueous dispersion of at least one agrochemical active compound, which is solid at room temperature,
- b) an emulsion polymer system comprising I) anionic stabiliser polymer;
- and II) core-stabiliser copolymer,
- wherein the I) anionic stabiliser polymer comprises acid based and hydrophobe monomers having a weight/number ratio of said acid to hydrophobe of 10-90:90-10, a Tg in the range from 30° C. to 300° C., and a molecular weight less than 100,000;
- and wherein the I) anionic stabiliser polymer is a styrene (meth)acrylic acid copolymer,
- and wherein the II) core-stabiliser polymer has a Tg in the range from −100° C. to 10° C. and is a copolymer of 2-ethyl-hexyl acrylate and a styrene;
- wherein the weight ratio of anionic stabilizer polymer to core-stabiliser copolymer is between 30:70 to 40:60,
- c) one or more additives selected from the group consisting of non-ionic or anionic surfactants or dispersing aids,
- d) one or more rheological modifiers wherein the one or more rheological modifiers is selected from xanthan gum, montmorillonite clays, bentonite clays and fumed silica, and
- e) one or more other formulants selected from antifoams, biocides, antifreeze, colorants, pH adjusters, buffers, stabilisers, antioxidants, inert filling materials, humectants, crystal growth inhibitors, micronutrients, penetration promoters, wetting agents, spreading agents and/or retention agents.
7 more elements
Dependencies are inferred from the claim text.