Two-stage, in-situ polymerization process for producing...

Details Two-stage, in-situ polymerization process for producing... Two-stage, in-situ polymerization process for producing...

G - Physics

03

G

96/50

G03G 9/08 (2006.01) C08F 291/00 (2006.01) G03G 9/09 (2006.01)

Patent

CA 1080533

IN-SITU POLYMERIZATION ABSTRACT OF THE DISCLOSURE Processes for producing colored toner particles are provided comprising mixing a monomer, a colorant and an initiator to form an oil soluble organic phase; dispersing this oil soluble phase in controlled size between 5 to 20 microns in a water phase, employing a suspending agent, for example polyvinyl alcohol; polymerizing, employing conventional suspension polymerization techniques; introducing a second monomer which is allowed to diffuse into the first polymer and consequently swells the polymer; introducing a water soluble initiator; and heating this reaction mixture to effect a polymerization of the second monomer and form the desired toner.

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