Method for producing aqueous composite particle dispersions

C - Chemistry – Metallurgy – 08 – F

Patent

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C08F 2/44 (2006.01) C08F 2/24 (2006.01) C08F 292/00 (2006.01) C08K 3/00 (2006.01)

Patent

CA 2592311

The invention relates to a method for producing an aqueous dispersion of particles composed of a polymer and a fine-grained inorganic solid (composite particles). According to said method, ethylenically unsaturated monomers are dispersed in an aqueous medium and polymerised using at least one radical polymerisation initiator in the presence of at least one dispersed, fine- grained inorganic solid and at least one dispersant, according to the method of radical aqueous emulsion polymerisation. The monomer mixture used contains > 0 and = 10 wt. % of at least one ethylenically unsaturated monomer containing an epoxy group.

L'invention concerne un procédé de production d'une dispersion aqueuse de particules (composites) constituées d'un polymère et d'une matière solide inorganique à fines particules. Selon ce procédé, des monomères éthyléniquement insaturés sont dispersés dans un milieu aqueux, puis ils sont polymérisés au moyen d'au moins un initiateur de polymérisation radicalaire en présence d'au moins une matière solide inorganique à fines particules dispersée et d'au moins un agent de dispersion par la méthode de la polymérisation radicalaire en émulsion aqueuse, le mélange de monomères utilisé contenant plus de 0 et jusqu'à 10 % en poids d'au moins un monomère éthyléniquement insaturé présentant un groupe époxyde.

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