Organic dispersions of inorganic particles and coating...

C - Chemistry – Metallurgy – 09 – D

Patent

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C09D 7/00 (2006.01)

Patent

CA 2589704

The present invention provides a method of preparing an organosol of inorganic particles, comprising mixing an aqueous dispersion or sol of inorganic particles with an organic liquid and a polymer or oligomer having functionality that adsorbs onto the inorganic particles; and allowing the mixture to separate into an aqueous layer and an organic layer, the organic layer comprising the inorganic particles. The invention also provides a polymer composition or coating composition made by this method. A coating composition is applied to a substrate and cured to provide a coating layer on the substrate. A polymer composition containing the inorganic particles is molded into an article.

La présente invention fournit un procédé de préparation d~un organosol de particules inorganiques, comprenant le fait de mélanger une dispersion aqueuse ou une solution colloïdale de particules inorganiques avec un liquide organique et un polymère ou un oligomère ayant une fonctionnalité qui s~adsorbe sur les particules inorganiques ; et de permettre au mélange d~être séparé en une phase aqueuse et une phase organique, la phase organique comprenant les particules inorganiques. L'invention fournit également une composition de polymère ou une composition de revêtement fabriquée à partir de ce procédé. Une composition de revêtement est appliquée à un substrat et durcit pour fournir une couche de revêtement sur le substrat. Une composition de polymère contenant les particules inorganiques est moulée pour donner un article.

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