Water re-dispersible granules comprising an active matter in...

C - Chemistry – Metallurgy – 08 – J

Patent

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C08J 3/21 (2006.01) B01J 2/28 (2006.01) B01J 2/30 (2006.01)

Patent

CA 2349673

The invention concerns water re-dispersible granules obtainable by drying an emulsion comprising an active matter in the form of a hydrophobic, a non-ionic surfactant selected among polyoxyalkylene derivatives, and a water soluble or water dispersible compound selected among polymers: (i) obtained by polymerising an ethylenically unsaturated carboxylic acid, or anhydride monomer (I), and an ethylenically unsaturated carboxylic acid polyoxyalkylene ester (III), and optionally an ethylenically unsaturated linear or branched hydrocarbon monomer (II); or obtained by polymerising said monomer (I), and a vinyl type monomer (II'), comprising at least a C2-C10 linear or branched, or cyclic aliphatic radical; (ii) obtained by polymerising at least a monomer of formula (I) comprising a hydrophobic graft; (iii) polypeptides of natural or synthetic origin; (iv) highly depolymerised polysaccharides comprising at least a hydrophobic graft.

La présente invention a pour objet des granulés redispersables dans l'eau susceptibles d'être obtenus par séchage d'une émulsion comprenant une mature active sous forme de liquide hydrophobe, un tensioactif non ionique choisi parmi les dérivés polyoxyalkylénés, et un composé hydrosoluble ou hydrodispersable choisi parmi les polymères: (i) obtenus par polymérisation d'un monomère (I) acide carboxylique ou anhydride, éthyléniquement infatué, et d'un monomère (III) ester polyoxyalkyléné d'acide carboxylique éthyléniquement insaturé, et éventuellement d'un monomère (II) hydrocarboné, linéaire ou ramifié, éthyléniquement insaturé; ou par polymérisation d'un monomère (I) précité, et d'un monomère (II') de type vinylique, comprenant au moins un radical aliphatique linéaire ou ramifié, ou cyclique, en C2 - C10; (ii) obtenus par polymérisation d'au moins un monomère de formule (I) et comportant un greffon hydrophobe; (iii) polypeptides d'origine naturelle ou synthétique, comportant au moins un greffon hydrophobe; (iv) polysaccharides fortement dépolymérisés comportant au moins un greffon hydrophobe.

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