Toner particles comprising colorant-polyesters
AssigneeXerox Corporation
InventorsSantiago FAUCHER, Kimberly D. NOSELLA, Shigang S. QIU
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Abstract
A toner composition including a colorant-polyester polymer having at least one colorant and at least one polyester resin, an optional non-colorant polyester polymer, an optional additional colorant, an optional wax, and an optional additive, where the colorant is covalently linked to some or all of the polyester resin and the polyester resin is obtained by polymerizing a lactone using an enzyme catalyst. Methods for preparing a toner composition including an emulsion aggregation process.
Claims20
A toner composition comprising:
- a colorant-polyester polymer comprising at least one colorant and at least one polyester resin,
- an optional non-colorant polyester,
- an optional additional colorant,
- an optional wax, and
- an optional additive,
- wherein the colorant is covalently linked to some or all of the polyester resin and the polyester resin is obtained by polymerizing a lactone using an enzyme catalyst.
A method for preparing a toner composition, the method comprising:
- forming a colorant-polyester resin emulsion comprising a colorant-polyester polymer an optional non-colorant polyester,
- mixing the colorant-polyester resin emulsion, an optional colorant, an optional wax, and an optional additive to form a mixture, and
- aggregating and coalescing the mixture to form the toner composition,
- wherein the colorant-polyester polymer comprises at least one colorant and at least one polyester resin, the colorant is covalently linked to some or all of the polyester resin and the polyester resin is obtained by polymerizing a lactone using an enzyme catalyst.
A method for preparing a toner composition, the method comprising:
- providing a reaction solution comprising an ester monomer, a colorant having or functionalized to have at least one hydroxyl group, and an enzymatic catalyst;
- reacting the ester monomer and the colorant using the enzymatic catalyst to produce a polymeric product, wherein the polymeric product comprises a colorant-polyester polymer;
- separating the polymeric product from the reaction solution;
- forming a latex from the polymeric product;
- and
- using the resulting polymeric product emulsion in an emulsion aggregation process to produce a toner composition.
Dependencies are inferred from the claim text.