Phase immersion emulsification process and apparatus
First Claim
1. A method for preparing a latex or dispersion, the method comprising:
- contacting at least one resin with an organic solvent to form a resin mixture;
neutralizing the resin mixture with a basic neutralizing agent;
subjecting the resin mixture to steam flow in a continuous manner to form a dispersion by continually pumping the resin mixture and the steam flow into a mixing zone thereby forming a latex where the resin mixture and steam flow contact within the mixing zone; and
removing the latex from the mixing zone;
wherein the latex formation in the mixing zone requires no mechanical mixing.
6 Assignments
0 Petitions
Accused Products
Abstract
A method for preparing a latex or dispersion, the method comprising contacting at least one resin with an organic solvent to form a resin mixture; neutralizing the resin mixture with a neutralizing agent; and subjecting the resin mixture flow to steam flow in a continuous manner to form a dispersion. A method for forming toner, the method comprising: contacting a resin to an organic solvent and a neutralizing agent to form a resin mixture; subjecting the resin mixture flow to a steam flow in a continuous manner to form a dispersion; aggregating particles from a pre-toner mixture, the pre-toner mixture comprising the dispersion, an optional colorant, and an optional wax; and coalescing the aggregated particles to form toner particles. An apparatus that can perform the methods.
47 Citations
14 Claims
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1. A method for preparing a latex or dispersion, the method comprising:
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contacting at least one resin with an organic solvent to form a resin mixture; neutralizing the resin mixture with a basic neutralizing agent; subjecting the resin mixture to steam flow in a continuous manner to form a dispersion by continually pumping the resin mixture and the steam flow into a mixing zone thereby forming a latex where the resin mixture and steam flow contact within the mixing zone; and removing the latex from the mixing zone; wherein the latex formation in the mixing zone requires no mechanical mixing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 13, 14)
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9. A method for forming toner, the method comprising:
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contacting a resin with an organic solvent and a basic neutralizing agent to form a resin mixture; subjecting the resin mixture to a steam flow in a continuous manner to form a dispersion by continually pumping the resin mixture and the steam flow into a mixing zone thereby forming a latex where the resin mixture and steam flow contact within the mixing zone; removing the latex from the mixing zone; wherein latex formation in the mixing zone requires no mechanical mixing; aggregating particles from a pre-toner mixture, the pre-toner mixture comprising the dispersion, an optional colorant, and an optional wax; and coalescing the aggregated particles to form toner particles. - View Dependent Claims (10, 11, 12)
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Specification