| 摘要 |
PROBLEM TO BE SOLVED: To provide a water dispersion in which aromatic polysulfone resin particles are dispersed in water and are hardly sedimented and which is suitable as a water-based paint. SOLUTION: The water dispersion is prepared by dispersing, in water, the aromatic polysulfone resin particles satisfying the following requirements (a) and (b): (a) an aromatic polysulfone resin for composing the aromatic polysulfone resin particles has hydroxyl groups and/or salts thereof in an amount of 1.6 or more groups relative to 100 repeating units for composing the aromatic polysulfone resin; and (b) the aromatic polysulfone resin particles have a volume average particle diameter of 50μm or less. COPYRIGHT: (C)2011,JPO&INPIT
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