COPOLYMER EMULSION AND TOPCOAT PAINT FOR MULTI-LAYER ELASTIC COATING FILM IN CONSTRUCTION

摘要

PROBLEM TO BE SOLVED: To provide a topcoat paint good in adhesivity to a coating film of an elastic coating material, and good in weatherability and water resistance against rain, UV rays, etc. , for exterior uses, and to provide a copolymer emulsion suitable for the topcoat paint.;SOLUTION: This copolymer emulsion having 0-50°C glass transition temperature is obtained by polymerizing, in an aqueous medium, a monomer mixture comprising 0.1-10 wt.% hydrophilic radically-polymerizable monomer (a) with more than 1 wt.% solubility in water and 90-99.9 wt.% hydrophobic radically-polymerizable monomer (b) with less than 1 wt.% solubility in water.;COPYRIGHT: (C)2006,JPO&NCIPI