COATING AGENT AND INTERMEDIATE BASE MATERIAL

• Main Authors: KOYANAGI SHIZUE, SAKATA HIROAKI, TAKEDA ICHIRO, MACHIDA GIMPEI
• Format: Patent
• Language: English; Japanese
• Published: 16.09.2021
• Subjects: ADHESIVES; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; CORRECTING FLUIDS; DYES; FILLING PASTES; GENERAL PROCESSES OF COMPOUNDING; INKS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; MAKING GRANULES OR PREFORMS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; POLISHES; PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF MATERIALS THEREFOR; WOODSTAINS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING-UP

To provide a surface protective material which is rich in UV resistance, can protect a surface of a prepreg as a base material, prevents degradation by UV of a fiber-reinforced composite material and can prevent defects in coating, can control a resin flow, and has a small amount of volatilization in curing.SOLUTION: A coating agent for spraying or hand coating that is composed of an epoxy resin composition containing at least components [A] to [D] contains 90-100 pts.mass of [A], 15-75 pts.mass of [B], 0.05-75 pts.mass of [C] and 0.1-10 pts.mass of [D] with respect to 100 pts.mass of the whole epoxy resin. [A] Non-aromatic epoxy resin. [B] Pigment having an average particle diameter of 0.1-10 μm. [C] Non-aromatic thermoplastic resin. [D] Cationic or anionic curing agent.SELECTED DRAWING: None 【課題】耐ＵＶ性に富み、母材となるプリプレグ表面を保護することが可能であり、繊維強化複合材料のＵＶによる劣化を防止し塗装時の不具合を防止することができ、なおかつ、樹脂フローの制御が可能であり、硬化時の揮発量が少ない表面保護材料を提供する。【解決手段】少なくとも構成要素［Ａ］〜［Ｄ］を含むエポキシ樹脂組成物からなるスプレー用または手塗り用の塗布剤であって、全エポキシ樹脂１００質量部に対して［Ａ］を９０〜１００質量部、［Ｂ］を１５〜７５質量部、［Ｃ］を０．０５〜７５質量部、［Ｄ］を０．１〜１０質量部含む塗布剤。［Ａ］非芳香族エポキシ樹脂［Ｂ］平均粒径０．１〜１０μｍの顔料［Ｃ］非芳香族熱可塑性樹脂［Ｄ］カチオンまたはアニオン硬化剤【選択図】なし