AQUEOUS SYNTHETIC RESIN EMULSION, RE-EMULSIFIABLE EMULION POWDER, AND ADHESIVE COMPOSITION CONTAIN

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Provided are an aqueous synthetic resin emulsion, a re-emulsifiable emulsion powder, and an aqueous synthetic resin emulsion obtained by re-emulsifying the re-emulsifiable emulsion powder, the emulsions and the powder being capable of forming a film excellent in water resistance, warm-water resistance, boiling resistance, toughness, and durability. Also provided is an adhesive composition. They are an aqueous synthetic resin emulsion containing a synthetic resin dispersed and stabilized with a polyvinyl alcohol-based resin (a) having a 1, 2-diol bond in a side chain thereof, wherein the synthetic resin comprises, as a polymerizable monomer which constitutes the synthetic resin, a hydrophobic monomer having a solubility in water at 20°C of 0.1% or less in an amount of 30% by weight or more based on all polymerizable monomers, the hydrophobic monomers comprising a styrene-based monomer; a re-emulsifiable emulsion powder; and an aqueous synthetic resin emulsion obtained by re-emulsifying the re-emulsifiable emulsion powder.