Toner processes with hydrolyzable surfactant
AssigneeXerox Corporation
InventorsPaul F. Smith, Nan-Xing Hu, Beverly C. Dutoff, Beng S. Ong, Raj D. Patel, Michael A. Hopper
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Abstract
A process for the preparation of toner by mixing a colorant dispersion and a latex emulsion, and wherein the latex emulsion contains resin and a surfactant, wherein the surfactant is, for example, of the Formulas (I) or (II) ##STR1## wherein R.sup.1 is a hydrophobic aliphatic, or hydrophobic aromatic group; R.sup.2 is selected from the group consisting of hydrogen, alkyl, aryl, alkylaryl, and alkylarylalkyl; R.sup.3 is hydrogen or alkyl; A is a hydrophilic polymer, and m represents the number of A segments.
Claims32
A process for the preparation of toner comprising mixing a colorant dispersion and a latex emulsion, and wherein the latex emulsion contains resin and a surfactant, and wherein the surfactant is of the Formulas (I) or (II), or optionally mixtures thereof ##STR14## wherein R.sup.1 is a hydrophobic aliphatic, or hydrophobic aromatic group;
- R.sup.2 is selected from the group consisting of hydrogen, alkyl, aryl, alkylaryl, and alkylarylalkyl;
- R.sup.3 is hydrogen or alkyl;
- A is a hydrophilic polymer chain, and m represents the number of A segments, forming aggregates from the mixture of said colorant dispersion and said latex emulsion, and coalescing said aggregates.
A process for the preparation of toner which comprises mixing a resin latex, an ionic surfactant and colorant, and a surfactant of the Formulas (I), or (II);
- heating the resulting mixture below about, or equal to about the glass transition temperature of the resin;
- thereafter heating the resulting aggregates above about, or about equal to the glass transition temperature of the resin;
- and optionally isolating, washing and drying the toner. ##STR15## wherein R.sup.1 is a hydrophobic group;
- R.sup.2 is selected from the group consisting of hydrogen, alkyl, aryl, alkylaryl, and alkylarylalkyl;
- R.sup.3 is hydrogen or alkyl;
- A is a hydrophilic segment;
- and m represents the number of A segments.
A process for the preparation of toner comprising mixing a colorant dispersion with a latex emulsion, and wherein the latex emulsion contains resin and a surfactant, and wherein the surfactant is represented by Formulas (I), (II) or (III);
- or optionally mixtures thereof ##STR17## wherein R.sup.1 is a hydrophobic moiety;
- R.sup.2 is selected from the group consisting of hydrogen, alkyl and aryl;
- R.sup.3 is hydrogen or alkyl;
- A is a hydrophilic polymer chain;
- and m is the number of repeating segments of the hydrophilic polymer chain A, forming aggregates from the mixture of said colorant dispersion and said latex emulsion, and coalescing said aggregates.
Dependencies are inferred from the claim text.