| 摘要 |
Provided is a surfactant which, even when applied to water-based coating fluids containing any binder resin, attains excellent forth control and satisfies coating film finish. The surfactant comprises, as an essential ingredient, at least one member selected from a group consisting of: a mixture (Y) comprising a polyoxyalkylene compound (Y1) of formula (1) and a polyoxyalkylene compound (Y2) of formula (2); a polymer obtained by the reaction of the mixture (Y) with a diisocyanate; a polymer obtained by the reaction of the mixture (Y) with a diglycidyl ether; and a polymer obtained by the reaction of the mixture (Y) with an epihalohydrin. {H(OA-)n}tQ (1) {H(OB-)m(OA-)n}tQ (2) Q is a residue of a non-reducing di- or trisaccharide; OA is C2-3 oxyalkylene; OB is oxybutylene; the total number of moles of OA contained in Y1 is 15-100 per mole of Y1; the total number of moles of OA contained in Y2 is 15-50 per mole of Y2; and the total number of moles of OB is 2-6 per mole of Y2. |
