Dessicants and catalysts

Desiccants are chemicals accelerating the drying process after their introduction in coatings.

The catalysts are chemicals that accelerate the reaction, but they are not contained in the final product.

Desiccants are auxiliary substances that are added to oil paints to speed up the drying process. Chemically, they are catalysts for the oxidative polymerization of vegetable oils. Salts of cobalt, manganese, zirconium, barium, lead, calcium and others can be used as desiccants.

By the mechanism of action, they are divided into two classes: primary, or true, desiccants, and auxiliary ones (promoters) that have an activating effect on primary desiccants. Promoters promote uniform drying of the coating throughout its thickness and increase the stability of true desiccants.

True desiccants are salts of carboxylic acids of transition metals, such as cobalt, manganese, lead, existing in two valence states.

Promoters include salts of calcium, barium, zinc, and zirconium. The mechanism of action of promoters is that, being strong bases, they more actively interreact with the carboxyl groups of alkyd oligoesters, thus eliminating their interreaction with metal salts that are contained in desiccants.

The content of the desiccant added into the finished formulation of alkyd enamels is 0.1-0.2%.

The price is calculated individually based on the scope, terms of payment and delivery. Pickup by customer or delivery from any of our warehouses is possible.

Dessicants and catalysts

DESIGNATIONMETAL, CONTENT OF METAL, %SOLVENTAPPLICATIONPRODUCT ORDER
Monoelemental
Attdry Cobalt
Description  
Sample

Co 6/10/12 %White SpiritFiberglass containers and pipes, unsaturated polyesters.Add to order

Attdry Manganese
Description  
Sample

Mn 10 %White SpiritAdd to order

Attdry Zirconium
Description  
Sample

Zr 6/18 %White SpiritAdd to order

Attdry Zinc
Description  
Sample

Zn 8 %White SpiritAdd to order

Attdry Lithium
Description  
Sample

Li 2 %White SpiritAdd to order

Attdry Calcium
Description  
Sample

Ca 4/10 %White SpiritAdd to order

Attdry Barium
Description  
Sample

Ba 12,5 %White SpiritAdd to order

Attdry Lead
Description  
Sample

Le 36White SpiritAdd to order

Mixed
Attdry 69
Description  
Sample

Co, Zr 6/9 %White SpiritAdd to order

Attdry 155
Description  
Sample

Co, Ca, Zr 5/1,2/5 %White SpiritAdd to order

Attdry 173
Description  
Sample

Co, Ba, Zr 1,2/7,2/3,2 %White SpiritAdd to order

CATALYSTS
Attcure SN
Sample

Contains SnBased on a combination of moderately active metal carboxylates, dissolved in xylene. For 1K and 2K PU coatings and solvent containing coatings.Add to order

 

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