| abstract |
[MEANS FOR SOLVING PROBLEMS] In addition to emulsification stability, maintain low-temperature film-forming properties of emulsion, low-temperature adhesiveness and transparency of dry film, and add hydrophilic organic solvent and ionic additives to make mechanical The object is to obtain an emulsion that does not aggregate or increase in viscosity even when subjected to shearing. As a copolymerization component, a structural unit derived from a polymerizable monomer having a structure in which a polymerizable double bond and a hydrophilic group are bonded together with 4 to 16 atoms interposed therebetween. 5 to 20 mol%, and a nonionic monomer-derived structural unit having a nonionic surfactant group is contained as a copolymerization component in an amount of 1 to 20 mol%, and the copolymer flow tester A polymer emulsifier having a 1/2 method temperature of 40 ° C. or higher and 140 ° C. or lower is used. [Selection figure] None |