Toner compositions and processes thereof

Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...

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430109, 430111, 430137, G03G 900

Patent

active

053467906

ABSTRACT:
A process for the preparation of a toner comprising: preparing an organic phase comprised of a first nonpolar olefinic monomer, a second nonpolar diolefinic monomer, a pigment, a free radical initiator, and optionally a charge control agent; adding the organic phase to an aqueous phase comprised of at least one surfactant; shearing the organic phase into the aqueous phase to form a microdroplet suspension of the organic phase dispersed in the aqueous phase; heating and polymerizing the microdroplets in the suspension to form nonpolar olefinic resin particles; halogenating the nonpolar olefinic resin particle mixture to form a nonpolar toner having a halopolymer resin outer surface or encapsulating shell; and optionally isolating the surface halogenated nonpolar toner.

REFERENCES:
patent: 4797339 (1989-01-01), Maruyama et al.
patent: 4876313 (1989-10-01), Lorah
patent: 4983488 (1991-01-01), Tan et al.
patent: 4996127 (1991-02-01), Hasegawa et al.
patent: 5278020 (1994-01-01), Grushkin et al.

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