BLOCK POLYISOCYANATE COMPOSITION AND METHOD FOR PRODUCING THE SAME, RESIN COMPOSITION, RESIN FILM AND METHOD FOR PRODUCING THE SAME, AND LAMINATE

• Main Authors: YOSHINUMA TOMOHARU, YAMAUCHI MICHIKAZU, HORINOUCHI MISA, HARA KAZUYUKI, SHINOMIYA KIE
• Format: Patent
• Language: English; Japanese
• Published: 18.05.2023
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS THEREFOR; WOODSTAINS

To provide a resin film which is excellent in curability when baked at low temperatures of 90°C or lower when used as an aqueous coating composition, and is excellent in coated film appearance, water resistance and recoat adhesion of a resin film obtained after curing.SOLUTION: A resin film has an urethane bond derived from polyisocyanate obtained from aliphatic isocyanate and/or alicyclic isocyanate, an urea bond, a hydrophilic group, and a structure represented by the following general formula (I), wherein a molar ratio (urethane bond/urea bond) of the urethane bond to the urea bond is 95/5 to 30/70.SELECTED DRAWING: None 【課題】水系塗料組成物として使用した場合に、９０℃以下の低温で焼付した場合の硬化性に優れ、硬化後に得られた樹脂膜の塗膜外観、耐水性、リコート密着性に優れる樹脂膜を提供する。【解決手段】脂肪族イソシアネートおよび／または脂環族イソシアネートから得られるポリイソシアネート由来のウレタン結合及びウレア結合、親水性基、並びに下記一般式（Ｉ）で表される構造を有する樹脂膜であって、ウレタン結合／ウレア結合のモル比（ウレタン結合／ウレア結合）が９５／５～３０／７０である。［化１］TIFF2023070109000030.tif42170【選択図】なし