POLYCARBONATE-MODIFIED ACRYLIC RESIN, PAINT, AND PLASTIC MOLDED ARTICLE PAINTED BY SAID PAINT

• Main Author: Murakawa, Taku
• Format: Patent
• Language: English
• Published: 04.11.2021
• 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; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED 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; WORKING-UP

Provided is a polycarbonate-modified acrylic resin which is a reaction product of a polycarbonate diol (A) obtained by using 1,5-pentanediol and 1,6-hexanediol as raw materials, and an unsaturated monomer mixture (B) containing methyl methacrylate, an unsaturated monomer (b1) having a hydroxyl group, an unsaturated monomer (b2) having a carboxyl group, and an unsaturated monomer (b3) having an alkyl group having 2 to 8 carbon atoms as essential components, wherein the mass proportion of the unsaturated monomer (b2) in the unsaturated monomer mixture (B) is in the range of 2 to 10% by mass. The polycarbonate-modified acrylic resin is advantageous in that a coating film having high adhesion to a plastic substrate and having excellent water-resistant adhesive property and excellent fragrance resistance can be obtained from the resin, and therefore can be advantageously used in a coating composition.