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PROBLEM TO BE SOLVED: To provide a stable tackifier resin emulsion having a softening point of 130-180⁰C with a high yield, without using any solvent or plasticizer in an emulsifying step.
SOLUTION: The tackifier resin emulsion having a volume-average particle diameter of 0.7 micrometers or less is obtained by dispersing a polymerized rosin-based ester resin having the softening point of...