초록 ▼

The present disclosure relates to a process for producing a toner particulate composition from aqueous dispersions containing aggregates of a polymer binder and other toner ingredients. An ionic surfactant may be used to form the dispersion along with an ionic polymer flocculent wherein the ionic po

The present disclosure relates to a process for producing a toner particulate composition from aqueous dispersions containing aggregates of a polymer binder and other toner ingredients. An ionic surfactant may be used to form the dispersion along with an ionic polymer flocculent wherein the ionic polymer flocculent undergoes a molecular conformational change, which may be triggered by pH adjustment, leading to flocculation and particle growth.

대표청구항 ▼

What is claimed is: 1. A process for producing a toner particulate composition comprising:(a) forming an aqueous dispersion comprising aggregates of polymer binder and colorant stabilized by an anionic surfactant and a cationic polymer flocculant containing a plurality of cationic functional groups;

What is claimed is: 1. A process for producing a toner particulate composition comprising:(a) forming an aqueous dispersion comprising aggregates of polymer binder and colorant stabilized by an anionic surfactant and a cationic polymer flocculant containing a plurality of cationic functional groups;(b) adjusting the pH of said dispersion to a value of greater than 7.0 to configure said cationic polymer flocculant into a random coil configuration and mixing;(c) adjusting the pH of said dispersion to a value of greater than or equal to 4.0 and less than 7.0 to configure said cationic polymer flocculant into a relatively extended chain configuration wherein said plurality of cationic functional groups become available to promote flocculation and particle growth of said aggregates to a desired size; and(d) heating to a temperature above a glass transition temperature of said polymer binder and collecting particulate.