Patent application number | Description | Published |
20080258118 | Colored composite microparticles, process for producing the colored composite microparticles, colorant, color filter and ink for ink-jet printing - There are provided colored composite microparticles having a fine primary particle diameter and exhibiting a high tinting strength, an excellent dispersibility and an excellent light fastness; a process for producing the colored composite microparticles; and a dispersion of the colored composite microparticles. The colored composite microparticles are composite particles comprising silica and an organic pigment in which the silica is enclosed in the organic pigment and contained in an amount of 0.001 to 9% by weight (calculated as Si) based on the weight of the composite particles. The coloring composition for color filters is prepared by dispersing a colorant for color filters comprising the colored composite microparticles in a coloring composition base material, whereas the ink for ink-jet printing is prepared by dispersing a colorant for inks for ink-jet printing comprising the colored composite microparticles in an ink base solution. The colored composite microparticles have a high tinting strength and are excellent in dispersibility and light fastness, and therefore, can be suitably used in various applications such as ordinarily used paints, printing inks, etc., irrespective of an aqueous system or a solvent system. | 10-23-2008 |
20090042064 | NON-MAGNETIC PARTICLES FOR NON-MAGNETIC UNDERCOAT LAYER OF MAGNETIC RECORDING MEDIUM, AND MAGNETIC RECORDING MEDIUM - The present invention relates to non-magnetic particles for non-magnetic undercoat layer of magnetic recording medium, comprising: hematite particles; an inner coating layer comprising a phosphorus-containing inorganic compound which is formed on a surface of the respective hematite particles; and an outer coating layer comprising an aluminum-containing inorganic compound which is formed on an outside of the inner coating layer comprising the phosphorus-containing inorganic compound. | 02-12-2009 |
20090220823 | FERROMAGNETIC METAL PARTICLES AND PROCESS FOR PRODUCING THE SAME, AND MAGNETIC RECORDING MEDIUM - The present invention relates to ferromagnetic metal particles having a bulk density (ρa) of not more than 0.25 g/cm | 09-03-2009 |
20110068307 | Colored composite microparticles, process for producing the colored composite microparticles, colorant, color filter and ink for ink-jet printing - There are provided colored composite microparticles having a fine primary particle diameter and exhibiting a high tinting strength, an excellent dispersibility and an excellent light fastness; a process for producing the colored composite microparticles; and a dispersion of the colored composite microparticles. The colored composite microparticles are composite particles comprising silica and an organic pigment in which the silica is enclosed in the organic pigment and contained in an amount of 0.001 to 9% by weight (calculated as Si) based on the weight of the composite particles. The coloring composition for color filters is prepared by dispersing a colorant for color filters comprising the colored composite microparticles in a coloring composition base material, whereas the ink for ink-jet printing is prepared by dispersing a colorant for inks for ink-jet printing comprising the colored composite microparticles in an ink base solution. The colored composite microparticles have a high tinting strength and are excellent in dispersibility and light fastness, and therefore, can be suitably used in various applications such as ordinarily used paints, printing inks, etc., irrespective of an aqueous system or a solvent system. | 03-24-2011 |
20120164320 | MANUFACTURING METHOD OF SOFT MAGNETIC MATERIAL AND MANUFACTURING METHOD OF DUST CORE - A manufacturing method of a soft magnetic material has a step of preparing a metal magnetic particle containing iron as the main component, and a step of forming an insulating film surrounding the surface of the metal magnetic particle. The step of forming the insulating film includes a step of mixing and stirring the metal magnetic particle, aluminum alkoxide, silicon alkoxide, and phosphoric acid. | 06-28-2012 |
20140322437 | NON-MAGNETIC PARTICLES FOR NON-MAGNETIC UNDERCOAT LAYER OF MAGNETIC RECORDING MEDIUM, AND MAGNETIC RECORDING MEDIUM - The present invention relates to non-magnetic particles for non-magnetic undercoat layer of magnetic recording medium, comprising: hematite particles; an inner coating layer comprising a phosphorus-containing inorganic compound which is formed on a surface of the respective hematite particles; and an outer coating layer comprising an aluminum-containing inorganic compound which is formed on an outside of the inner coating layer comprising the phosphorus-containing inorganic compound. | 10-30-2014 |
Patent application number | Description | Published |
20080248245 | Soft Magnetic Material, Method of Manufacturing Soft Magnetic Material, Dust Core, and Method of Manufacturing Dust Core - A soft magnetic material includes a plurality of composite magnetic particles. Each of the plurality of composite magnetic particles has a metal magnetic particle including iron, a lower film surrounding the surface of the metal magnetic particle and including a nonferrous metal, and an insulating upper film surrounding the surface of the lower film and including an inorganic compound. The inorganic compound contains at least one element of oxygen and carbon. The nonferrous metal has an affinity with at least one of oxygen and carbon that is larger than such affinity of iron. The nonferrous metal has a diffusion coefficient with respect to at least one of oxygen and carbon that is smaller than such diffusion coefficient of iron. Thus, a soft magnetic material that provides desirable magnetic properties, a method of manufacturing a soft magnetic material, a dust core, and a method of manufacturing a dust core are provided. | 10-09-2008 |
20090047519 | SOFT MAGNETIC MATERIAL, DUST MAGNETIC CORE, PROCESS FOR PRODUCING SOFT MAGNETIC MATERIAL AND PROCESS FOR PRODUCING DUST MAGNETIC CORE - The soft magnetic material includes a plurality of composite magnetic particles having a metal magnetic particle and an insulating film surrounding the surface of the metal magnetic particle. The metal magnetic particle contains iron as the main component. The insulating film contains aluminum, silicon, phosphorus, and oxygen. The insulating film satisfies the relationship 0.4≦M | 02-19-2009 |
20100255188 | SOFT MAGNETIC MATERIAL, POWDER MAGNETIC CORE AND METHOD OF MANUFACTURING SOFT MAGNETIC MATERIAL - A soft magnetic material is a soft magnetic material including a composite magnetic particle ( | 10-07-2010 |