摘要:
The present disclosure provides processes for producing toners. In embodiments, silica is added as a chelating agent during the toner production process contributing to enhanced triboelectric charging properties of the toner particles.
摘要:
The present disclosure provides processes for producing toners. In embodiments, silica is added as a chelating agent during the toner production process contributing to enhanced triboelectric charging properties of the toner particles.
摘要:
A branched polyester suitable for use in solvent-free emulsification, the branched polyester having a first original weight average molecular weight before undergoing solvent-free emulsification and a second weight average molecular weight after undergoing solvent-free emulsification, wherein the branched polyester has a structure that limits degradation of the polyester during solvent-free emulsification to less than about 20 percent of the first original weight average molecular weight, wherein the branched polyester comprises a compound of the formula described.
摘要:
A toner comprising a branched polyester suitable for use in solvent-free emulsification, the branched polyester having a first original weight average molecular weight before undergoing solvent-free emulsification and a second weight average molecular weight after undergoing solvent-free emulsification, wherein the branched polyester has a structure that limits degradation of the polyester during solvent-free emulsification to less than about 20 percent of the first original weight average molecular weight, wherein the branched polyester comprises a compound of the formula described; an optional wax, and an optional colorant.
摘要:
A branched polyester suitable for use in solvent-free emulsification, the branched polyester having a first original weight average molecular weight before undergoing solvent-free emulsification and a second weight average molecular weight after undergoing solvent-free emulsification, wherein the branched polyester has a structure that limits degradation of the polyester during solvent-free emulsification to less than about 20 percent of the first original weight average molecular weight, wherein the branched polyester comprises a compound of the formula described.
摘要:
The present disclosure provides processes for producing toners. In embodiments, alkyl or alkyl ether sulfates are used in a solvent-free toner production process as surfactants to provide for higher parent particle charge without adversely affecting particle size, distribution control and circularity of the toner particles. The present disclosure also provides a new formulation and process for the emulsification of polyester resins to form nano-scale particles dispersed in water (latex) without the use of organic solvents by an extrusion process.
摘要:
A toner composition having toner particles comprising a gel latex, a high Tg latex, a wax, and a colorant. The gel latex is present in an amount of from about 3 weight percent to about 30 weight percent of the toner composition, the high Tg latex is present in an amount of from about 50 weight percent to about 95 weight percent of the toner composition, the wax is present in an amount of from about 2 weight percent to about 40 weight percent of the toner composition, and the colorant is present in an amount of from about 1 weight percent to about 25 weight percent of the toner composition.
摘要:
Disclosed herein are toner particles generated by emulsion/aggregation processes. The processes are conducted under conditions that shorten the time for coalescence and post-formation washing, thereby increasing efficiency of the processes as compared to conventional processes.
摘要:
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.
摘要:
A process for making a latex emulsion suitable for use in a toner composition includes contacting at least one polyester resin optionally with an organic solvent to form a resin mixture, adding a primary amine, optionally a surfactant, and deionized water to the mixture.