Changes in composition and characteristics of latex paints applied on porous inorganic substrates

Changes in film composition and characteristics that occur during and/or immediately after the application of latex paints on porous inorganic substrates were investigated. Gas chromatography (GC) and thermal analysis were among the techniques used for this purpose. The changes in coalescing agent and binder content were determined by GC and thermogravimetric-analysis, respectively, and the changes in glass transition temperature by differential scanning calo rimetry. It was found that the type of porous substrate could significantly affect the paint composition (pigment volume concentration, coalescent level) during the film formation process. Presented at the 25th FATIPEC Congress, September 2000, Torino, Italy. Are. P. Holoffe, 1342-Limelette, Belgium; email: perera.d@cori-coatings.be Leuvensesteenweg 167–199, 1800-Vilvoorde, Belgium; email: jeanmarie.borsus@akzonobel.com.