C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 175/04 (2006.01) B05D 1/36 (2006.01) C08G 18/62 (2006.01)
Patent
CA 2126112
Herberts Gesellschaft mit beschrankter H?ftung Abstract: Coating agents are described, that are suitable for the production of pigmented or transparent top coatings, based on hydroxy-functional (meth)acrylic copolymers, aliphatic and/or cycloaliphatic polyisocyanates, solvents, and customary lacquer additives and pigments. They are free from epoxy resins and nitrocellulose and contain as binder A) one or more (meth)acrylic copolymers, containing hydroxyl groups, from al) 47-53 wt% of one or more aromatic vinyl compounds, a2) 28-33 wt% of one or more hydroxyalkyl methacrylates, a3) 14-19 wt% of one or more alkyl (meth)acrylates, and a4) 0.5-2 wt% acrylic acid and/or methacrylic acid, with a hydroxyl number of 120-160 mg KOH/g, an acid number of 5 to 15 mg KOH/g, a weight-average molecular weight of 10,000 to 20,000 and a glass transition temperature of +40 °C to +60 °Cr.and B) an aliphatic and/or cycloaliphatic polyisocyanate or a mixture of such polyisocyanates in such an amount that 0.5 to 2.0 isocyanate groups are present for one hydroxyl group of component A).
Bederke Klaus
Bremer Gerhard
Kerber Hermann
Krumme Manfred
Ley Olaf
Herberts Gesellschaft Mit Beschrankter Haftung
Kirby Eades Gale Baker
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