Process for encapsulated toner compositions with oligomeric surf

Details Process for encapsulated toner compositions with oligomeric surf Process for encapsulated toner compositions with oligomeric surf

1988-06-24

1989-07-25

Martin, Roland E.

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

Process of making developer composition

430138, 42840224, G03G 908

Patent

active

048513180

ABSTRACT:
An improved process for the preparation of encapsulated toner compositions which comprises mixing core monomer(s), an initiator, or initiators, pigment particles, and oil soluble shell monomer(s); homogenizing the aforementioned mixture into an aqueous surfactant solution resulting in an oil-in-water suspension; thereafter adding water soluble shell monomer(s) to the oil-in-water suspension enabling an interfacial polymerization reaction between the oil soluble and the water soluble shell monomer(s); subsequently adding a low molecular weight polyethylene oxide surfactant protective colloid; and thereafter affecting a free-radical polymerization of the core monomer(s) by heating.

REFERENCES:
patent: 4307169 (1981-12-01), Matkan
patent: 4407922 (1983-10-01), Grushkin et al.
patent: 4476210 (1984-10-01), Croucher et al.
patent: 4727011 (1988-02-01), Mahabadi et al.
patent: 4758506 (1988-07-01), Lok et al.

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