Synthesis, properties and thermal behavior of new polymeric surfactant with quaternary ammonium salt

Manufacture of pigmented paints usually involves mixing liquid concentrates of dispersed pigments with the other ingredients. When they are made at the paint factory, they arecommonly called mill bases, and when they are purchased from specialist companies, they are called dispersions orcolorants [1]. Pigments are manufactured with the particle size distribution that gives the best compromise of properties, but the particles often become cemented together into aggregates during processing. Breaking these aggregates and forming stable dispersions of optimally sized pigment particles is acritical process in the manufacture of coatings. Making dispersions involves three aspects: wetting, dispersing, andstabilization. Conventional monofunctional polymeric surfactants can be used for this purpose. Surfactants have been designed that are so strongly adsorbed on a pigment that theyare preferentially adsorbed even in the presence of a large amount of solvent [2].