An aqueous
ultraviolet-absorbing resin
emulsion, and an aqueous resin
emulsion composition containing the
emulsion is provided, wherein the emulsion is excellent in compatibility with a
synthetic resin and light resistance. Also, the emulsion improves stability in blending with an aqueous emulsion of the
synthetic resin, and prevents bleed out of the
ultraviolet-absorbing resin on the surface of a
coating film. Further, the aqueous
ultraviolet-absorbing resin emulsion imparts excellent alkali or
solvent resistance to a
synthetic resin poor in alkali or
solvent resistance. More specifically, an aqueous resin emulsion composition comprising (I) an aqueous ultraviolet-absorbing resin emulsion and (II) an other aqueous resin emulsion is provided, wherein the emulsion (I) is obtained by urethanizing (A) a
polyol component having an ultraviolet-absorbing group {e.g., 1,1-bis[3-(2H-benzotriazol-2-yl)-4-hydroxy-benzeneethanol]
methane}, (B) a
polyol if necessary, (C) an
alkyl or
aryl dialkanolamine compound, and (D) an organic polyisocyanate in (E) an
organic solvent, diluting the reaction mixture with (F) an
organic solvent having a
boiling point lower than 100° C. to give a resin solution, neutralizing the resin solution with (G) a neutralizing agent, and dispersing the
resultant in water.