摘要:
Methods of encapsulating particles (260) in polymer (275, 380, 385) and compositions of matter using such encapsulated particles (260). Methods include mixing particles (260) of one or more materials with one or more initial polymerizable monomers (265) to form a first suspension of monomer-wetted particles (260/265), mixing the first suspension with an aqueous dispersant medium (270) to form a second suspension, adding one or more initial reaction initiators to at least one of the first suspension and the second suspension, subjecting the second suspension to homogenization to form a stable submicron emulsion having an aqueous continuous phase, and reacting available polymerizable monomers (265) of the emulsion to encapsulate the particles (260) in one or more layers of polymer (275, 380, 385).
摘要:
A polymer-encapsulated colorant nanoparticle includes a colorant nanoparticle core, and a polymer coating established on the colorant nanoparticle core. A negatively chargeable functional group is present on a surface of the polymer-encapsulated colorant nanoparticle.
摘要:
A liquid electrophotographic ink is disclosed herein. One example of the liquid electrophotographic ink includes a non-polar carrier liquid; pigmented toner particles; a charge director; and polymer resin encapsulated metal oxide nanoparticles. A method for making the liquid electrophotographic ink is also disclosed herein.
摘要:
An ink composition includes a particulate pigment, a hydrocarbon vehicle, an organic polyamine and an organic polyacid. A ratio by weight percent of the organic polyamine to the organic polyacid in the hydrocarbon vehicle is sufficient to render a conductivity of the ink composition to equal to or less than 15 nanosiemens per centimeter. The ink composition is prepared by combining the particulate pigment with a composition that includes the hydrocarbon vehicle, the organic polyamine and the organic polyacid. The combination is subjected to conditions under which the particulate pigment becomes dispersed in the composition.
摘要:
Methods of surface modification of polymer particle are useful in the development of marking fluids. The surface modification includes saponifying one or more acrylic ester groups on a surface of the polymer particle.
摘要:
Methods of surface modification of polymer particle are useful in the development of marking fluids. The surface modification includes saponifying one or more acrylic ester groups on a surface of the polymer particle.
摘要:
A digital printing composition includes a carrier and a colorant. The carrier includes a hydrocarbon having at least one unsaturated bond. The hydrocarbon is configured to at least one of polymerize or crosslink in the presence of a charged species produced from a corona generator.
摘要:
A polymer-encapsulated pigment and a method of modifying a pigment use functional groups of an interface layer to attach a polymer to a pigment composition. The polymer-encapsulated pigment includes a pigment composition, a polymer and an interface layer. In the polymer-encapsulated pigment and the method, the interface layer is covalently attached to an outer surface of the pigment composition. The polymer is attached to the interface layer with a linking group. The linking group is attached to the interface layer by a covalent bond of a functional group. The linking group includes a nucleophilic carbon atom to which the polymer is covalently attached.
摘要:
An apparatus for conducting single-pass filtration of ink waste is disclosed. The apparatus includes: a filter connected to a housing unit and a plurality of absorbent layers within the housing unit, wherein the plurality of absorbent layers are in any order and include: a layer for removing metal and polar compounds, a layer for removing non-polar color impurities, a layer for removing acid functional components, a layer for removing additives with polar or protic functional groups, and a layer for removing residual water. A process and a system that include or utilize the apparatus are also disclosed.
摘要:
Liquid electrophotographic ink concentrates and methods of preparing the same are disclosed herein. An example of the method includes preparing a mixture of ink components using a first predetermined thermal profile. The ink components include a resin, a pigment, and a carrier. The method further includes preparing a microfluidizer with a composition at a temperature within a predetermined range and processing the mixture in the prepared microfluidizer to form the concentrate. Processing the mixture includes pressure-feeding the mixture into the prepared microfluidizer, passing the mixture through the prepared microfluidizer for a predetermined number of times, and utilizing a second predetermined thermal profile while passing the mixture through the prepared microfluidizer. A viscosity modifier is added to the mixture before and/or during the processing of the mixture.