Читать книгу Additives for Waterborne Coatings - et al. - Страница 17

At higher concentrations of wetting and dispersing additives, compatibility between pigment concentrate and base paint (pigment paste absorption) is also improved. The better colour acceptance leads to lower rub-out values. The additives used contain hydrophilic structures such as hydrophilic side chains or salt-like groups. These hydrophilic structures orientate to the aqueous medium. The more additive used, the more hydrophilic the pigment particle becomes, leading to increasingly greater compatibility of pigment dispersion and water-borne paint.