REACTIVE MIXTURE FOR COATING MOLDED OBJECTS BY MEANS OF REACTION INJECTION MOLDING AND COATED MOLDED OBJECT

• Main Authors: SEYOUM GHIRMAY, GROSS ELEVTHERIOS, KORALEWSKI KLAUS, HOESS WERNER, FELGER ERWIN, GOLDACKER THORSTEN, SCHULTES KLAUS
• Format: Patent
• Language: English; Korean
• Published: 19.03.2010
• Subjects: ADHESIVES; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; 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; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; 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; PERFORMING OPERATIONS; POLISHES; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; 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

The present invention relates to a reactive mixture for coating molded objects by means of reaction injection molding comprising at least 40% by weight of 5 (meth) acrylates with at least two double bonds, wherein the reactive mixture comprises at least one photoinitiator and at least one thermal initiator. Furthermore, the present invention describes a coated molded object comprising a molded object which is obtainable by injection molding and which includes at least one polymer selected from the group comprising poly(methyl methacrylate), poly(methacryl methylimide), styrene-acrylonitrile copolymer, styrene-maleic acid copolymer, and poly(methyl methacrylate) copolymer, and a coating, which is obtainable by the polymerization of (meth) acrylates with at least two double bonds, wherein the coating has an adhesive strength rating of not more than 1 according to the cross-cut test and a decrease in gloss at 20°C according to a scratch-resistance test according to ASTM 1044 (12/05) (load of 500 g, number of cycles = 100) of not more than 10%.