| 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 R<SUB>1 </SUB>and R<SUB>2 </SUB>are hydrogen; R<SUB>3 </SUB>is (meth)acryloyloxy-methyl or phenyl para substituted by vinyl, R<SUB>4 </SUB>is phenyl or phenyl para substituted by vinyl or (meth)acryloyloxy; or a substituted phenyl residue of the formula -C<SUB>6</SUB>H<SUB>4</SUB>CH<SUB>2</SUB>-W, wherein W is (meth)acryloyloxy, or an aliphatic residue of the formula -CH<SUB>2</SUB>-Y-A, wherein Y is a bond, O-C<SUB>1</SUB>-C<SUB>12</SUB>alkylene, wherein the alkylene linker is linear or branched and may be interrupted once or more than once by oxygen, A is hydroxy, C<SUB>1</SUB>-C<SUB>6</SUB>alkoxy, acetoxy, (meth)acryloyloxy, or a phthalate- or maleate-residue; R<SUB>5 </SUB>is hydrogen; n is 1; X is -(CH<SUB>2</SUB>)-. 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.
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