| 摘要 |
PROBLEM TO BE SOLVED: To obtain an emulsion containing no solvent, capable of manifesting excellent water resistance or the like, useful for a vehicle for a coating material by forming the emulsion out of a copolymer comprising specific monomer components while regulating an chlorine content in a solid component within a specific range. SOLUTION: This emulsion contains a copolymer composed of (A) a monomer component having a radically polymerizable double bond and a salt of a strong acid group (e.g. sodium salt of an alkylarylsulfosuccinic acid), (B) other copolymerizable monomer components (e.g. acrylic acid and methacrylic acid) and (C) a vinyl chloride- and/or vinylidene chloride-based component, and has 30-70 wt.% chlorine content in the solid component. The composition of the copolymer is preferably 52-94.9 wt.% component C, 0.3-7 wt.% component A, and 15-40 wt.% component B. In the component B, the component of the formula (R1 is H or methyl; R2 is H or a 2-4C hydroxyalkyl) is preferably included in a proportion of 0.3-5.5 wt.%. |
