Low cost, low melt emulsion aggregation high gloss toners with low melt waxes

A method of making toner particles comprising:

• forming a slurry by mixing together an emulsion containing a resin, a low melting point wax, optionally a colorant, optionally a surfactant, optionally a coagulant, and one or more additional optional additives;
• and
• heating the slurry to form aggregated particles in the slurry,
• wherein:
• the aggregated particles form a core of the toner particles;
• and
• the low melting point wax has a melting point of less than about 80° C.

A composition comprising toner particles comprising:

• a core comprising:
• a styrene-based resin;
• a low melting point wax selected from the group consisting of a paraffin wax and an ester wax;
• a colorant;
• and
• an additive package comprising:
• a charge control agent selected from the group consisting of 3,5 Di-tert-butylsalicylic acid, zinc, and aluminum salt, and
• a surface additive selected from the group consisting of titanium oxide, silicon oxide, tin oxide, colloidal and amorphous silicas, metal salts, polymers, cross-linked polymers, zinc stearate, aluminum oxides, cerium oxides, and mixtures thereof;
• and
• a shell surrounding the core, the shell comprising a wax that is different than the low melting point wax,
• wherein:
• the low melting point wax has a melting point of less than about 80° C.;
• the low melting point wax is present in the core in an amount of from about 5 to about 20 wt % based on a total weight of the core;
• the shell has a higher glass transition temperature Tg than the core;
• the toner particles have an average glass transition temperature Tg of less than about 51° C.;
• the toner particles have a minimum fusing temperature of less than about 200° C.;
• the toner particles have a gloss of at least about 30 ggu;
• the toner particles have a melt flow index of from about 15 to about 200 g/10 min;
• the toner composition has a weight average molecular weight Mw of from about 25,000 pse to about 40,000 pse;
• the toner composition has a number average molecular weight Mn of from about 12,000 pse to about 15,000 pse;
• a ratio MWD of the Mw to the Mn of the toner composition is from about 2.00 to about 2.30;
• and
• a z-average molecular weight Mz of the toner composition is from about 60,000 to about 80,000.