Gas separation: apparatus – Magnetic separating means
Patent
1975-03-26
1978-03-07
Gwinnell, Harry J.
Gas separation: apparatus
Magnetic separating means
96 1LY, 252 621P, 252 621L, 260 4214, 260 4253, 427 19, 427 22, 427 24, 427214, 427221, 427222, 428407, G03G 908, C08J 320
Patent
active
040778045
ABSTRACT:
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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patent: 3833541 (1974-09-01), Shen
patent: 3959153 (1976-05-01), Sadamatsu et al.
patent: 3974078 (1976-08-01), Crystal
Frenkel Stuart D.
Gwinnell Harry J.
Xerox Corporation
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