Abstract: A phase inversion emulsification process includes dissolving a polyester resin in a mixture comprising (1) an organic solvent, (2) a first portion of a total amount of neutralizing agent, and (3) a first portion of water, neutralizing the dissolved polyester resin with a second portion of neutralizing agent, the second portion of neutralizing agent including the remaining amount of the total amount neutralizing agent, forming an emulsion by adding a second portion of water after the neutralizing step, and removing a portion of the organic solvent from the emulsion to provide a latex.

Abstract: A process includes dissolving a first polymer in an aprotic solvent, absent a protic organic solvent, to form a polymer solution, neutralizing acidic residues present in the first polymer by adding a neutralizing agent to the polymer solution, contacting the polymer solution with water to form a latex, removing the aprotic solvent from the latex, capturing the removed aprotic solvent as recycled solvent, and dissolving a second polymer with the recycled solvent.

Abstract: A method for reclaiming an out-of-spec emulsion material includes recovering the out-of-spec emulsion material from a scrap manufacturing batch; distilling the out-of-spec emulsion material to raise a solids content of the out-of-spec emulsion material to about 45 wt % or more based on a total weight of the emulsion material; dissolving the distilled emulsion material in a solvent to form a first mixture; adding a base to the first mixture to neutralize acid groups present in the distilled emulsion material, forming a second mixture; emulsifying the second mixture by adding water to the second mixture; and forming particles having an average particle diameter (D50v) within a target range, wherein the out-of-spec emulsion material has an average particle diameter falling outside of the target range.

Abstract: A method for reclaiming an out-of-spec emulsion material includes recovering the out-of-spec emulsion material from a scrap manufacturing batch; distilling the out-of-spec emulsion material to raise a solids content of the out-of-spec emulsion material to about 45 wt % or more based on a total weight of the emulsion material; dissolving the distilled emulsion material in a solvent to form a first mixture; adding a base to the first mixture to neutralize acid groups present in the distilled emulsion material, forming a second mixture; emulsifying the second mixture by adding water to the second mixture; and forming particles having an average particle diameter (D50v) within a target range, wherein the out-of-spec emulsion material has an average particle diameter falling outside of the target range.

Abstract: A phase inversion emulsification process includes dissolving a polyester resin in a mixture comprising (1) an organic solvent, (2) a first portion of a total amount of neutralizing agent, and (3) a first portion of water, neutralizing the dissolved polyester resin with a second portion of neutralizing agent, the second portion of neutralizing agent including the remaining amount of the total amount neutralizing agent, forming an emulsion by adding a second portion of water after the neutralizing step, and removing a portion of the organic solvent from the emulsion to provide a latex.

Abstract: Herein is disclosed a process for producing emulsion aggregation toner including (i) adding a base to an emulsion aggregation toner to increase the pH of the toner to from about 7 to about 12; (ii) sieving and filtering the toner; (iii) washing the toner with an enzyme selected from the group consisting of carboxylic ester hydrolase and sulfuric ester hydrolase; (iv) filtering the toner; (v) washing the toner with reverse osmosis or deionized water; and (vi) adding an acid to reduce the pH of the toner to from about 3 to about 8.