COVERING MATERIAL HAVING IMPROVED ADHESION

• Main Authors: AOYAMA ICHIROU, KISHI TOASHI, SAKATA KENJI
• Format: Patent
• Language: English
• Published: 20.11.1984
• 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

PURPOSE:A covering material, obtained by incorporating a specific polyacrylate of polypentaerythritol with a specific polyfunctional acrylate in a specific proportion, and incorporating a specific amount of a photosensitizer therewith, and capable of exhibiting improved adhesion to molded polypropylene articles and films. CONSTITUTION:A covering material obtained by incorporating (A) a polyacrylate of polypentaerythritol expressed by formula I (three or more of X11, X12, X13, Xn2, Xn3 and X14 are groups expressed by formula II; the rest are OH groups; n is an integer 1-5), preferably dipentaerythritol triacrylate is incorporated with (B) a polyfunctional acrylate having two or more urethane bonds at (70:30)- (97:3), preferably (80:20)-(95:5) weight ratio between the components (A) and (B), and 0.1-10pts.wt., preferably 1-6pts.wt. photosensitizer, e.g. benzoin butyl ether, is incorporated with 100pts.wt. above-mentioned mixture.