Emulsion/aggregation process using coalescent aid agents

Details Emulsion/aggregation process using coalescent aid agents Emulsion/aggregation process using coalescent aid agents

2006-09-08

2010-06-15

Goodrow, John L (Department: 1795)

Radiation imagery chemistry: process, composition, or product th

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

Process of making developer composition

C430S108100

Reexamination Certificate

active

07736831

ABSTRACT:
A process for preparing a toner includes mixing a polymeric resin emulsion, a colorant dispersion, and a wax to form a mixture; optionally adding a coagulant to the mixture; heating the mixture at a temperature below a glass transition temperature of the polymeric resin to aggregate the polymeric resin, colorant, and wax, to form aggregated particles; adding a coalescent agent to the aggregated particles; heating the aggregated particles and coalescent agent at a temperature above the glass transition temperature of the polymeric resin, to coalesce the aggregated particles to form toner particles, optionally cooling the mixture, and isolating the tone particles.

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