NEW REACTIVE DILUENTS AND NEW ALKYD RESIN COATING COMPOSITIONS

摘要

The invention relates to new reactive diluents of the formulae (Ia, Ib, Ic, Id, Ie) and to an alkyd coating composition comprising them. In a preferred embodiment R1 and R2 are hydrogen; R3 is (meth)acryloyloxy-methyl or phenyl para substituted by vinyl, R4 is phenyl or phenyl para substituted by vinyl or (meth)acryloyloxy; or a substituted phenyl residue of the formula -C6H4CH2-W, wherein W is (meth)acryloyloxy, or an aliphatic residue of the formula -CH2-Y-A, wherein Y is a bond, O-C1-C12alkylene, wherein the alkylene linker is linear or branched and may be interrupted once or more than once by oxygen, A is hydroxy, C1-C6alkoxy, acetoxy, (meth)acryloyloxy, or a phthalate- or maleate-residue; R5 is hydrogen; n is 1; X is -(CH2)-. The invention further relates to a solvent-based or water-based alkyd coating composition comprising 0.3 to 10 wt. % of a mono-, bis- or trisacylphosphinoxide photoinitiator, especially Irgacure 819.