COATING MATERIAL, ITS PRODUCTION AND ITS USE FOR PRODUCING TRANSPARENT TOP COATING LAYER ON MULTILAYER COATING

The invention relates to coating compositions and to their use for the production of transparent top coats on multilayer coatings. The coating compositions contain a mixture of A) 40-60% by weight of hydroxyl-containing (meth)acrylic copolymers obtainable by copolymerisation of a1) 50-70% by weight...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KURAUSU BEDERUKE, HERUMAN KERUBAA, HANSUUMARUTEIN SHIEENROTSUKU, FURIIDORIHI HERUMAN
Format:	Patent
Sprache:	eng
Schlagworte:	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
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Beschreibung
Zusammenfassung:	The invention relates to coating compositions and to their use for the production of transparent top coats on multilayer coatings. The coating compositions contain a mixture of A) 40-60% by weight of hydroxyl-containing (meth)acrylic copolymers obtainable by copolymerisation of a1) 50-70% by weight of one or more acrylic esters mixed with such a proportion of one or more hydroxyalkyl acrylates that the hydroxyl number is 40-70 mg of KOH/g and a2) 30-50% by weight of one or more methacrylic esters mixed with one or more hydroxyalkyl methacrylates in such a proportion that the hydroxyl number is 180-450 mg of KOH/g, and B) 60-40% by weight of hydroxyl-containing (meth) acrylic copolymers obtainable by copolymerisation of b1) 27-40% by weight of one or more alkyl acrylates, b2) 49-55% by weight of one or more methacrylic esters mixed with such a proportion of one or more hydroxyalkyl methacrylates that the hydroxyl number is 240-300 mg of KOH/g, b3) 1-3% by weight of acrylic acid and b4) 10-15% by weight of vinyl esters of aliphatic, saturated monocarboxylic acids in which the carboxyl group is bonded to a tertiary carbon atom.