Abstract: The present invention relates to a lightweight composite metal sheet having excellent vibration damping characteristics and a method of manufacturing the same. Provided is a composite metal sheet including: a metal sheet; and a plastic layer disposed on one surface or both surfaces of the metal sheet and including a polyolefin and a thermoplastic polyester polyether elastomer.

Abstract: The present invention relates to a lightweight composite metal sheet having excellent vibration damping characteristics and a method of manufacturing the same. Provided is a composite metal sheet including: a metal sheet; and a plastic layer disposed on one surface or both surfaces of the metal sheet and including a polyolefin and a thermoplastic polyester polyether elastomer.

Abstract: Disclosed is a method of manufacturing ceramic coated graphite having electric resistance in a range from 108 to 1016 ?/sq via a sol-gel method, the ceramic coated graphite comprising graphite; and ceramic chemically bonded to a lateral defect area of the graphite, wherein the graphite is oval graphite having an aspect ratio selected from the group consisting of 10:1 to 200:1, and the ceramic is at least one type selected from the group consisting of magnesium oxide, aluminum oxide, zinc oxide, zirconium oxide, and silica.

Abstract: Provided is a resin composition for surface treatment of a steel sheet including a binder resin, graphene and a solvent. More particularly, as only a small amount of the graphene is included in the resin composition used for surface treatment of a steel sheet, a user-required electrical conductivity can be provided to the steel sheet.

Abstract: Disclosed is a method of manufacturing ceramic coated graphite having electric resistance in a range from 108 to 1016 ?/sq via a sol-gel method, the ceramic coated graphite comprising graphite; and ceramic chemically bonded to a lateral defect area of the graphite, wherein the graphite is oval graphite having an aspect ratio selected from the group consisting of 10:1 to 200:1, and the ceramic is at least one type selected from the group consisting of magnesium oxide, aluminum oxide, zinc oxide, zirconium oxide, and silica.

Abstract: Provided are a capsulated colorant, a method of preparing same and ink compositions including the capsulated colorant. The capsulated colorant includes a colorant and a polymer resin coated on the colorant. The polymer resin is a result of polymerization of a polymerizable composition comprising a basic monomer and a polymerizable unsaturated monomer. The ink composition comprises the colorant coated with the polymeric resin and a solvent, which may be water and at least one organic solvent.

Abstract: Provided is a resin composition for surface treatment of a steel sheet including a binder resin, graphene and a solvent. More particularly, as only a small amount of the graphene is included in the resin composition used for surface treatment of a steel sheet, a user-required electrical conductivity can be provided to the steel sheet.

Abstract: A hybrid toner and a method of preparing the toner are provided. The hybrid toner is of a core-shell type having improved storage characteristics and a toner blocking phenomenon. The toner prevents image contamination caused by dispersion of waxes or colorants onto the surface of the outer layer of toner particles are prevented. The hybrid toner includes particles including: a core of about 100 parts by weight of a polyester-based resin, about 1-20 parts by weight of a wax, about 0.1-10 parts by weight of a colorant and about 0.1-10 parts by weight of a charge control agent; and about 5-500 parts by weight of a vinyl-based resin, about 0.1-10 parts by weight of silica, about 0.1-5 parts by weight of a metal oxide and about 0.1-10 parts by weight of polymer beads.

Abstract: Provided is an encapsulated colorant including a colorant grafted with a water-soluble polymer and a polymer resin coating the colorant. Also provided is a method of preparing the same.

Abstract: Provided is a capsulated colorant including: a colorant; and a polymer resin coating the colorant, wherein the polymer resin is made by polymerization of a polymerizable composition including a macromonomer and a polymerizable unsaturated monomer. A method of preparing same, and an ink composition comprising the capsulated colorant and a solvent, are also provided. The macromonomer is an emulsion stabilizer when the polymer resin is formed in the water solution.

Abstract: Provided are a capsulated colorant, a method of preparing same and ink compositions including the capsulated colorant. The capsulated colorant includes a colorant and a polymer resin coated on the colorant. The polymer resin is a result of polymerization of a polymerizable composition comprising a basic monomer and a polymerizable unsaturated monomer. The ink composition comprises the colorant coated with the polymeric resin and a solvent, which may be water and at least one organic solvent.

Abstract: A method of preparing a toner, a toner prepared using the method, an image forming method using the toner, and an image forming apparatus containing the toner are provided. The method of preparing toner includes providing a toner composition including a polyester-macromonomer having double bonds at the ends of a molecular chain of a polyester, at least one polymerizable monomer, and a pigment, providing a stabilizer dispersion by mixing a dispersion medium and a stabilizer, and then mixing the obtained stabilizer dispersion with the toner composition to form droplets, and heat-treating the droplets to polymerize the mixture. The method of preparing the toner according to the present invention provides a toner having excellent properties of both a polyester-based monomer and a vinyl-based monomer and excellent gloss, durability, low-temperature fusing property, and stability and may be used to easily control types and sizes of the toner.

Abstract: A toner preparation method is provided including: polymerizing a toner composition including a polyester-macromonomer having double bonds at the molecular chain ends and at least one polymerizable monomer to prepare a polymer latex; and mixing the polymer latex with a dispersed pigment solution obtained by dispersing a pigment in a macromonomer having both a hydrophilic group and a hydrophobic group and containing at least one reactive functional group and agglomerating the polymer latex in the presence of an inorganic salt, and a toner prepared using the toner preparation method. The toner has excellent properties of both a polyester-based monomer and a vinyl-based monomer and excellent gloss, durability, low-temperature fixing property, and storage stability, and the shape and size of the toner can be easily controlled.

Abstract: A hybrid toner and a method of preparing the toner are provided. The hybrid toner is of a core-shell type having improved storage characteristics and a toner blocking phenomenon. The toner prevents image contamination caused by dispersion of waxes or colorants onto the surface of the outer layer of toner particles are prevented. The hybrid toner includes particles including: a core of about 100 parts by weight of a polyester-based resin, about 1-20 parts by weight of a wax, about 0.1-10 parts by weight of a colorant and about 0.1-10 parts by weight of a charge control agent; and about 5-500 parts by weight of a vinyl-based resin, about 0.1-10 parts by weight of silica, about 0.1-5 parts by weight of a metal oxide and about 0.1-10 parts by weight of polymer beads.

Abstract: A hybrid toner and a method of preparing the toner are provided. The hybrid toner is of a core-shell type, and as such the storage characteristics of the toner are improved and a toner blocking phenomenon and image contamination that are caused by dispersion of waxes or colorants onto the surface of the outer layer of toner particles are prevented. The hybrid toner includes particles include: a core of about 100 parts by weight of a polyester-based resin, about 1-20 parts by weight of a wax, about 0.1-10 parts by weight of a colorant and about 0.1-10 parts by weight of a charge control agent; and a shell of about 5-500 parts by weight of a vinyl-based resin, about 0.1-10 parts by weight of silica, about 0.1-5 parts by weight of a metal oxide and about 0.1-10 parts by weight of polymer beads.

Abstract: A method of preparing a resin composition of a toner and a toner composition having the same. The method of preparing the resin composition includes preparing a compound in which a double bond is introduced into a polyester by reacting the polyester with a double bond-containing compound, adding a first vinyl-based monomer to the polyester having the double bond, and polymerizing the first vinyl-based monomer and the polyester having the double bond.

Abstract: A method of preparing a latex for a toner composition and a method of preparing a toner composition using the same. The method of preparing the latex for the toner composition includes preparing a monomer solution by dissolving a polyester-based monomer in an organic solvent and adding a vinyl-based monomer thereto, preparing an aqueous macromonomer solution by dissolving a macromonomer in water, preparing a solution in which monomers and macromonomer are suspended by mixing the monomer solution and the aqueous macromonomer solution, and polymerizing the monomers by adding a hydrophobic polymerization initiator to the suspended solution.

Abstract: A method of preparing a latex for a toner composition and a method of preparing a toner composition using the same. The method of preparing a latex for a toner composition includes preparing a monomer solution by dissolving a polyester-based monomer in an organic solvent and adding a vinyl-based monomer thereto, preparing an aqueous macromonomer solution by dissolving a macromonomer in water, preparing a solution in which monomers and macromonomer are emulsified by mixing the monomer solution and the aqueous macromonomer solution, and polymerizing the monomers by adding a hydrophilic polymerization initiator to the emulsified solution.