Composite particle dispersions

Details Composite particle dispersions Composite particle dispersions

C - Chemistry, Metallurgy

08

J

C08J 3/21 (2006.01) C08F 265/02 (2006.01) C08J 3/00 (2006.01) C08J 3/03 (2006.01)

Patent

CA 2020844

PV 35375 ABSTRACT Composite Particle Dispersions A composite particle dispersion is prepared by mixing an aqueous dispersion of polymer particles which will form the particle shell with pre-formed polymer particles which will form the core at a temperature above the glass transition temperature for the shell particles. In order to ensure composite particle formation, certain interfacial energy criteria have to be satisfied for the core particle surface/shell particle surface/liquid interfaces. In order to allow the desired energy relationships to be established, the core particle surfaces include covalently attached ionic groupings which enable a permanent modification of the core particle surface to be made.

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