Waxes based on polyolefin chemistry are also used as anti-settling and sag control agents in high-solid coatings. They are supplied as fine powders or as pastes in solvent. They must be activated by a combination of heat and shear. During this process of activation, their coiled crystalline matrix becomes extended into a straight chain configuration, resulting in chain entanglement and hence increased viscosity.
Polyolefins
25 декабря, 2015 
Pokraskin 
Опубликовано в рубрике Understanding. Coatings Raw Materials