Paint Driers are the products of organic acids containing 7-18 carbon atoms. Drying tasks in the drying event to accelerate the reactions. Paint Driers; they are metallic structures that accelerate their drying when applied to resins, paints and varnishes.
Cobalt and manganese, which are active paint driers, provide surface drying. The surface of the cobalt, which is oxidizing, provides drying. Manganese is both surface (oxidation) and bottom (polymerization) drier.
When used with active driers, Pb (Lead), Ca (Calcium), Zr (Zirconium), Zn (Zinc), St (Strontium) and Ba (Barium) auxiliary metal driers which increase the drying and film properties. Paint driers are used as a mixture according to the desired feature.
Lead:
It is an important auxiliary desiccant in the applications where drying of the bottom surface and drying of the bottom and intermediate layer of the paint film are necessary in every temperature range.
It is used as the main auxiliary drier on polyurethane surfaces. It decreases drying losses. It is used as a grinding aid for paints and pigments as a dispersing agent.
Lead is a heavy metal that is widely used in the industry because of its being widely processable metal and is used in industry a lot, therefore it threatens human health in industrialized societies. Lead is widely used in the paint industry, in the fields of metal products, cables and pipelines.
In our country, in recent years, technical measures have been started to be taken with the legal regulations and lead to the harmful effects. Due to the toxic effects of the interior paints, lead is no longer used.
Zirconium and zinc are preferred instead of lead in exterior paints. Due to the toxic effect of lead on human health, we also use zirconium in the paint sector and mix products instead of lead.
Zirconium which is a secondary drier provides drying of the bottom. To increase the performance of paints and varnishes, together with cobalt and other auxiliary driers, it is an effective auxiliary drier used in paint environment.
Zirconium is better color, less yellowing and good stability for use in light colored paints and furnace systems. Calcium is the most used auxiliary desiccant and wetting agent. Promotes the activity of active driers. When used with or without lead, it helps to dry in low temperature and humid environments.
It is used as a good wetting agent and lowers drying losses. Mix mixers driers are mixture driers. The combination of a premixed drier offers advantages over single metal driers. Technically, the mixtures are pre-stabilized and therefore eliminate the gelation problems resulting from the structure of the different driers.
Production controls guarantee metal ratios. This eliminates any performance problems associated with fluctuations in metal concentrations or ratios. One mix drier can replace several metal driers.
Zinc leaves the surface open so that a harder film layer is formed in paints. Auxiliary drier. It is also a very good pigment dispersion. When used in combination with cobalt gives a hard film. It reduces the loss of drying.
We use zirconium instead of lead in lead free Mix mixtures. Akdry MIX-2 is among our nature-friendly products. As we attach importance to the environment and human health, we continue to work on lead-free mixing products.
Zerrin Pandır
Responsible of Skatif Department
Akpa Kimya Ambalaj San. Ve Tic A.Ş.
