| 摘要 |
<p>There is disclosed an article and method for forming it in which an aqueous dispersion of a thermoplastic or thermosetting water-insoluble addition polymer composed of ethylenically unsaturated monomers, in which the polymeric particles are monodisperse and have a size in the range of about 0.5 to about 10 microns, and in which the composition has a minimum film-forming temperature of about 10 DEG to about 200 DEG C. The dispersion is applied to a substrate, such as an automobile body, the coating so obtained is dried at a temperature below the minimum film-forming temperature of the composition so that the particles do not coalesce but dry to a compact, uncracked powdery but loosely coherent layer, which layer is then heated to a temperature at which the particles coalesce to a continuous uncracked film.</p> |
