CPC C09D 167/08 (2013.01) [B05D 3/067 (2013.01); C08F 8/00 (2013.01); C08G 63/914 (2013.01); C08J 3/24 (2013.01); C08L 67/08 (2013.01); C09D 5/00 (2013.01); C08J 2367/08 (2013.01)] | 21 Claims |
1. A cured top-coating having easy to clean properties which is crosslinked to form a crosslinked network by RMA crosslinking a top-coating layer of an RMA crosslinkable coating composition,
wherein the RMA crosslinkable coating composition comprises at least one crosslinkable component comprising reactive components A and B, each comprising at least 2 reactive groups, wherein the at least 2 reactive groups of component A are acidic protons C—H in activated methylene or methine groups, and the at least 2 reactive groups of component B are activated unsaturated groups C═C, which at least one crosslinkable component reacted to crosslink by RMA reaction in the presence of a base catalyst (C),
said RMA crosslinkable coating composition comprises fatty components selected from the group of fatty acids, fatty alcohols, fatty amines, fatty thiols and dimeric fatty acid,
wherein the fatty components comprise fatty chains containing 10-40 carbons, said cured top-coating having an Oil Content (OC) in wt % defined as the total weight of fatty components relative to the total solids weight of the crosslinkable composition, a crosslinking density (XLD) and a glass transition temperature (Tg) as determined by DMTA measurement on a cured coating film without pigments, wherein:
a) OC is 0-4 wt % and XLD is at least 3.5 mmoles/g and Tg is at least 330K, or
b) OC is 4-10 wt % and XLD is at least 1.9 mmoles/g and Tg is at least 300K, or
c) OC is 10-14 wt % and XLD is at least 1.6 mmoles/g and Tg is at least 300K, or
d) OC is at least 15 wt % and XLD is at least 1.4 mmoles/g and Tg is at least 290K.
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