Ultraviolet-curable resin composition, ultraviolet-curable coating and coated article

An ultraviolet-curable resin composition which comprises

• a composite resin (A) which has a polysiloxane segment (a1) having a silanol group and/or a hydrolytic silyl group, as well as a polymerizable double bond and a polymer segment (a2) other than the polysiloxane segment (a1);
• a photo initiator (B);
• and
• a polyfunctional (meta) acrylate,
• wherein the polysiloxane segment (a1) is a polysiloxane segment having a structural unit expressed by the following general formula (S-2) and (S-3),
• (in the general formulae (S-2) and (S-3), R3, R4 and R5 each independently denotes an alkyl group of 1 to 6 carbon atoms, a cycloalkyl group or an aryl group of 3 to 8 carbon atoms and an aralkyl group of 7 to 12 of carbon atoms), and
• wherein the composite resin (A) is a composite resin in which the polysiloxane segment (a1) is bonded to the polymer segment (a2) in a structure expressed by the formula (S-5)
• (in the formula, the carbon atom is a carbon atom constituting the polymer segment (a2), and two silicon atoms are silicon atoms constituting the polysiloxane segment (a1)).