C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
117/145, 400/421
C08L 61/20 (2006.01) C08F 283/02 (2006.01) C08L 57/00 (2006.01) C08L 67/02 (2006.01) C09D 151/00 (2006.01) C09D 157/00 (2006.01) C09D 161/20 (2006.01) C09D 167/00 (2006.01) C09D 167/02 (2006.01)
Patent
CA 2013373
ABSTRACT Aqueous heat-curable coating substance in a polyester and acrylic resin base, process for its manufacture and its use. In the past, aqueous coating substances were not weatherproof and could not be used as clear varnish coatings. The new aqueous coating substances provide weatherproof heat-curable coatings and can be used for clear coats or pigmented cover coats. The heat curable aqueous coating substances contain as binding agents 20 to 45 %/weight of an amine resin cross-linking agent and 80 to 55 %/weight of a polyester oligomer polyacrylate which is water-soluble following neutralisation with bases and has a hydroxyl value of 150 to 390 and an acid value of 16 to 40, manufactured by the radical polymerisation of a hydroxyfunctional (meth)acrylic acid ester, a monofunctional ethylenically unsaturated acid and, if required, an ?,.beta. ethylenically unsaturated monomer with no functional groups, in a polyester oligomer.
Bederke Klaus
Ducoffre Volker
Graef Knut
Herberts Gesellschaft Mit Beschrankter Haftung
Kirby Eades Gale Baker
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