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US 2014/0370437 A1Published application
Production of Latex using a Wipe Film Evaporator
AssigneeXerox Corporation
InventorsAmy A. Grillo, Shigang Qiu, Peter V. Nguyen, Chieh-Min Cheng
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Abstract
A process is disclosed for making a resin emulsion suitable for use in forming toner particles including using a wiped film evaporator for removing residual solvents.
Claims20
A process comprising:
- contacting at least one polyester resin possessing acid groups with an organic solvent to form a resin mixture;
- heating the resin mixture;
- adding at least one solvent inversion agent to the mixture;
- neutralizing the resin mixture with a neutralizing agent;
- adding water to the mixture until phase inversion occurs to form a phase inversed mixture;
- and
- removing the solvents from the phase inversed mixture with a wiped film evaporator.
4 more elements
A process comprising:
- contacting at least one polyester resin with an organic solvent to form a mixture;
- heating the mixture;
- diluting the mixture to a desired concentration by adding at least one solvent inversion agent to form a diluted mixture;
- mixing an aqueous solution of neutralizing agent with the diluted mixture;
- adding water dropwise to the diluted mixture until phase inversion occurs to form a phase in versed mixture;
- and
- contacting the phase nversed mixture with a wiped film evaporator.
4 more elements
Dependencies are inferred from the claim text.