Лако-красочные материалы — производство

Polyacrylate leveling additives are homopolymers or copolymers of acrylates with alkyl, polyester or polyether modifications. They are normally supplied as solvent-free materials or as solutions. The per­formance of these additives is tailored through variations in their chemical composition (polarity and type of monomers) and MW, because their solubility and compatibility in coatings are dependent on these factors. Linear acrylic polymers are more incompatible than branched ones and those with higher MW are more incom­patible than those with lower MW. Polyacrylate leveling additives for waterborne applications are also designed with incorporation of polar groups such as carboxylic acid groups or polyethylene glycol. An excessive dosage of polymeric leveling agents with high incom­patibility tends to produce haziness in films.