COLORING MATERIAL

• Main Authors: NAKAMURA KAZUHIKO, HAO ZHIMIN, ITO KIYOSHI, IQBAL ABUL, YOSHIHARA TOSHIO, FURUKAWA MINORU
• Format: Patent
• Language: English
• Published: 27.03.2001
• Edition: 7
• Subjects: ADHESIVES; CHEMISTRY; COLOUR PRINTING; DYES; LAKES; LINING MACHINES; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; MORDANTS; NATURAL RESINS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES; PAINTS; PERFORMING OPERATIONS; PHYSICS; POLISHES; PRINTING; PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; STAMPS; TRANSPORTING; TYPEWRITERS

PROBLEM TO BE SOLVED: To obtain a coloring material capable of providing a color filter improved in spectral characteristics by transforming a soluble pigment precursor to an insoluble pigment by using a solution containing a specific soluble pigment precursor, a solvent and a stabilizing agent. SOLUTION: By using a solution containing (A) a soluble pigment precursor capable of being transformed to an insoluble pigment, (B) a solvent capable of dissolving the ingredient A and (C) a stabilizing agent comprising an organic material having a structure or a functional group capable of stabilizing dispersibility of an insolubilized pigment in the ingredient B, a coloring material in which the insolubilized pigment is stably dispersed in the ingredient B by transforming the ingredient A to the insoluble pigment. The transformation of the ingredient A to the insoluble pigment is preferably carried out by a chemical means, a thermal means, a photolysis, an irradiation inducing means or the like. As the insoluble pigment, it is preferable to have a polar group such as a primary amine, a secondary amine, a cyclic amine, hydroxy group or the like.