Method of dispersing an insoluble material in aqueous...

A - Human Necessities – 01 – N

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A01N 25/30 (2006.01) A01N 25/04 (2006.01) B01F 17/52 (2006.01) C05G 3/06 (2006.01)

Patent

CA 2306421

A method of dispersing an insoluble material in an aqueous solution comprising the following steps: (i) providing a formulation comprising at least one insoluble material and at least one dispersant comprising a water soluble agriculturally acceptable derivative of an alternating copolymer or an agriculturally acceptable salt thereof wherein said alternating copolymer comprises at least one residue of a first comonomer and at least one residue of a second comonomer, wherein said first comonomer comprises .alpha..beta.-unsaturated oxyacids or anhydrides and said second comonomer comprises olefinic compounds containing one or more polymerizable double bonds; and (ii) dispersing said formulation in an aqueous medium.

La présente invention concerne un procédé de dispersion d'une substance insoluble dans une solution aqueuse, comprenant les étapes suivantes: (I) apport d'un produit formulé comprenant au moins une substance insoluble et au moins un dispersant contenant un dérivé d'un copolymère alterné, soluble dans l'eau et acceptable du point de vue agricole, ou d'un sel de copolymère alterné, également acceptable du point de vue agricole, où le copolymère alterné comprend au moins un résidu d'un premier comonomère et au moins un résidu d'un second comonomère, où ledit premier comonomère comprend des oxyacides ou anhyrides alpha , beta -insaturés et le ledit second comonomère comprend des composés oléfiniques contenant une ou plusieurs doubles liaisons polymérisables; et (II) dispersion du produit formulé dans un milieu aqueux.

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