German Technical Background VOK-355 Leveling Agent Used in Solvent-based Coating Systems to Improve Leveling Replaces BYK-355

German technical background VOK®-FL 355 leveling agent

VOK®-FL 355 is a polyacrylate-based surface additive for solventborne coating systems to improve leveling. Suitable for medium to high polarity systems. 

Product information 

Chemical composition 

Polyacrylate solution 

Typical physicochemical data 

The data presented on this data page is typical and not a product specification. 

Density (20 °C): 1.01 g/ml 

Non-volatile (30 min., 150 °C): 52% 

Solvent: propylene glycol methyl ether acetate 

Flash point: 45 °C 

Special considerations 

The solvent-free version of the additive is VOK®-356. 

Application areas 

Coatings industry 

Product features and benefits 

The additive is used as an anti-crater and leveling additive for a wide range of solventborne coatings. Increases gloss and creates a long-wave effect. Slightly reduces surface tension without affecting recoating and interlayer adhesion. The additive is thermally stable. 

Recommended dosage 

0.1-1.0% additive dosage (purchased form) is based on total formulation. 

The above recommended dosage is for reference, and the appropriate dosage needs to be determined through a series of tests. 

Addition method and processing guidance 

The additive can be added at any stage of the production process, including post-adding.