PHOTOSENSITIVE RESIN COMPOSITION FOR INKJET, AND PRINTED WIRING BOARD

• Main Authors: EIZAI HIROSHI, OKAMOTO YOSHIO
• Format: Patent
• Language: English; Japanese
• Published: 07.10.2021
• Subjects: ADHESIVES; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COLOUR PRINTING; COMPOSITIONS BASED THEREON; CORRECTING FLUIDS; DYES; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; FILLING PASTES; INKS; LINING MACHINES; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; POLISHES; PRINTED CIRCUITS; PRINTING; PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; STAMPS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; TYPEWRITERS; USE OF MATERIALS THEREFOR; WOODSTAINS

To provide a photosensitive resin composition that can form a cured product having excellent coatability in an inkjet method, and excellent electrical insulation properties, fire retardancy and bleed resistance.SOLUTION: A photosensitive resin composition for inkjet of the present invention including: (meth)acrylic resin (A) having the weight-average molecular weight of 500 or more; (B) (meth)acrylic compound having the weight-average molecular weight of less than 500; (C) phosphorus-containing compound; and (D) photopolymerization initiator, in which the component (C) is a compound other than phosphate ester, which is a compound having a functional group reactable by photo-radical polymerization or photo-cationic polymerization.SELECTED DRAWING: None 【課題】インクジェット法での塗工性に優れ、かつ、電気絶縁性、難燃性および耐ブリード性に優れた硬化物を形成することができる感光性樹脂組成物を提供すること。【解決手段】本発明のインクジェット用感光性樹脂組成物は、（Ａ）重量平均分子量が５００以上の（メタ）アクリル系樹脂と、（Ｂ）重量平均分子量が５００未満の（メタ）アクリル系化合物と、（Ｃ）リン含有化合物と、（Ｄ）光重合開始剤と、を含む感光性樹脂組成物であり、前記（Ｃ）成分が、リン酸エステル以外の化合物であり、かつ、光ラジカル重合または光カチオン重合により反応可能な官能基を有する化合物であることを特徴とするものである。【選択図】なし