Emulsion aggregation process for forming curable powder...

Details Emulsion aggregation process for forming curable powder... Emulsion aggregation process for forming curable powder...

C - Chemistry, Metallurgy

08

J

C08J 3/16 (2006.01) B05D 1/12 (2006.01) B29B 9/08 (2006.01) C08J 3/12 (2006.01) C08J 3/21 (2006.01) C09D 5/00 (2006.01) C09D 5/03 (2006.01)

Patent

CA 2493835

A process for forming curable powder comprises providing an aqueous dispersion of particles of curable resin and optionally particles comprising at least one curing agent; aggregating the particles optionally with the curing agent to form aggregated particles; coalescing the aggregated particles to form fused particles; and removing the fused particles from the aqueous dispersion. By this process, a curable powder is formed. The curable powder may be used in powder coating.

Procédé consistant à produire une poudre durcissable présentant une dispersion aqueuse de particules de résine durcissable et, éventuellement des particules comprenant au moins un durcisseur. Ce procédé consiste à mélanger éventuellement les particules avec le durcisseur pour obtenir des particules agrégées, à fusionner celles-ci et à retirer les particules fusionnées de la dispersion aqueuse. Grâce à ce procédé, on obtient une poudre durcissable qui peut être utilisée dans les revêtements en poudre.

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