RED COLORING COMPOSITION

• Main Authors: MANABE HITOMI, TOGAI MANABU, TAKAISHI YU, TSUJIUCHI SHO
• Format: Patent
• Language: English; Japanese
• Published: 13.10.2022
• Subjects: ADHESIVES; APPARATUS SPECIALLY ADAPTED THEREFOR; CHEMISTRY; CINEMATOGRAPHY; COMPOSITIONS BASED THEREON; DYES; ELECTROGRAPHY; HOLOGRAPHY; LAKES; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; MATERIALS THEREFOR; 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; ORGANIC MACROMOLECULAR COMPOUNDS; ORIGINALS THEREFOR; PAINTS; PHOTOGRAPHY; PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES; PHYSICS; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP

To provide a red coloring composition which is useful for thinning of a color filter.SOLUTION: A red coloring composition contains a coloring agent (A), a resin (B), a polymerizable compound (C), a polymerization initiator (D), and a solvent (E), wherein the coloring agent (A) contains an orange coloring agent (A-1) satisfying the condition (X), and a red coloring agent (A-2). [Condition (X)]: A composition (X) which contains only the orange coloring agent (A-1) as a coloring agent and has a percentage content of the orange coloring agent (A-1) in a solid content of 10 mass% is prepared, when absorbance of a color filter which is formed from the resin composition (X) and has a film thickness of 1 μm is measured, absorbance at a wavelength 480 nm is 0.50 or more, absorbance at a wavelength of 530 nm is 0.30 or more and 0.70 or less, and absorbance at a wavelength of 580 nm is 0.20 or less.SELECTED DRAWING: None 【課題】カラーフィルタの薄膜化に有用な赤色着色組成物を提供する。【解決手段】着色剤（Ａ）、樹脂（Ｂ）、重合性化合物（Ｃ）、重合開始剤（Ｄ）及び溶剤（Ｅ）を含み、前記着色剤（Ａ）が、条件（Ｘ）を満たす橙色着色剤（Ａ－１）と、赤色着色剤（Ａ－２）とを含む赤色着色組成物。〔条件（Ｘ）〕着色剤として、橙色着色剤（Ａ－１）のみを含み、固形分中、橙色着色剤（Ａ－１）の含有率が１０質量％となる組成物（Ｘ）を調製し、前記組成物（Ｘ）から形成され膜厚１μｍのカラーフィルタについて吸光度を測定したとき、波長４８０ｎｍにおける吸光度が０．５０以上であり、波長５３０ｎｍにおける吸光度が０．３０以上０．７０以下であり、波長５８０ｎｍにおける吸光度が０．２０以下である。【選択図】なし