SURFACE SIZE AGENT FOR PAPER MAKING, PRODUCTION METHOD OF SURFACE SIZE AGENT FOR PAPER MAKING, AND SURFACE COATED PAPER

摘要

To provide a surface size agent for paper making, having excellent mechanical stability under high temperature and performing excellent size effect, a production method of surface size agent for paper making, and surface coated paper.SOLUTION: The surface size agent for paper making contains a polymer emulsion obtained by emulsion polymerization of a monomer component (A) containing 25-75 wt.% of styrene analogs (a1), 1-30 wt.% of hydroxy group-containing alkyl (meth)acrylate analogs (a2), and 5-70 wt.% of hydroxy group-free alkyl (meth)acrylate analogs (a3) in the presence of enzyme modified starch (B).SELECTED DRAWING: None