Heat-curable coating agent

C - Chemistry – Metallurgy – 08 – K

Patent

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117/192, 400/421

C08K 5/42 (2006.01) C08G 59/40 (2006.01) C08G 63/91 (2006.01) C09D 133/04 (2006.01) C09D 167/00 (2006.01) C08L 61/20 (2006.01) C08L 63/00 (2006.01)

Patent

CA 1081389

Abstract A heat-curable coating composition which contains as binder an am- inoplast and/or low-molecular precursors thereof mixed with a a saturated poly- ester, an oil-free or oil-modified alkyd resin and/or an acrylic resin contain- ing hydroxyl groups, wherein 0.1 to 20 per cent by weight, relative to the binder, of an adduct of an epoxide and a monofunctional sulphonic acid is present as a curing accelerator, the adduct containing 0.1 to 1.0 sulphonic acid group per epoxy group. The coating agents may be applied by customary process, such as, for example, brushing and spraying, and are also suitable for us in electrostatic lacquering processes. The coatings prepared therefrom have a reduced tendency to turn yellow.

213742

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