Seed treatment pesticidal compositions

A - Human Necessities – 01 – N

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A01N 25/30 (2006.01) A01C 1/06 (2006.01) A01N 37/46 (2006.01) A01N 43/36 (2006.01) A01N 43/54 (2006.01) A01N 43/653 (2006.01) A01N 43/90 (2006.01) A01N 47/02 (2006.01) A01N 47/26 (2006.01) A01N 51/00 (2006.01) A01N 53/00 (2006.01) A01N 57/16 (2006.01)

Patent

CA 2557793

A seed treatment aqueous insecticidal and/or nematicidal composition in the form of a suspension comprising: (A) at least one insecticide and/or nematicide in an amount of at least 3 weight %, based on the weight of the composition, and optionally at least one other substance which has a melting point above 30~C; and (B) at least two surface active compounds, wherein (i) at least one surface active compound has a molecular weight of less than 2200 and a Hydrophile-Lipophilic Balance (HLB) of at least 10 and (ii) at least one surface active compound is non-ionic, has a molecular weight of at least 2200, wherein 10 to 60 % of the compound molecular weight contributes to the hydrophile constituent of the compound, and the molecular weight of the hydrophobe constituent of the compound is from 2000 to 10000; provided that the weight ratio of (B):(A) is in the range 0.08 to 0.5, and the weight ratio of (ii):(i) is at least 0.5. Such compositions demonstrate improved dust-off performance when applied to propagation material, such as seeds.

L'invention concerne une composition insecticide et/ou nématicide aqueuse de traitement de semences sous forme de suspension contenant : (A) au moins un insecticide et/ou nématicide dans une quantité d'au moins 3 % en poids, en fonction du poids de la composition, et facultativement au moins une autre substance présentant un point de fusion supérieur à 30 ·C ; et (B) au moins deux composés tensioactifs, (i) au moins un composé tensioactif présentant un poids moléculaire inférieur à 2200 et un rapport hydrophile-lipophile (HLB) d'au moins 10, et (ii) au moins un composé tensioactif non ionique présentant un poids moléculaire d'au moins 2200, 10 à 60 % du poids moléculaire du composé formant le constituant hydrophile du composé, le poids moléculaire du constituant hydrophobe du composé étant compris entre 2000 et 10000 ; à condition que le rapport de poids (B):(A) soit compris entre 0,08 et 0,5, et que le rapport de poids (ii):(i) soit d'au moins 0,5. Les compositions selon l'invention présentent des propriétés améliorées d'élimination des particules aéroportées lorsqu'elles sont appliquées sur un matériau de propagation, tel que des semences.

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