German technical background VOK-019 Defoamer Used in printing ink to prevent blistering during grinding replaces BYK-019

German technical background VOK®-DF 019 Silicone defoamer

Recommended for water-based pigment concentrate of paints, printing inks and varnish. It can prevent foaming during grinding, and has long-term stability and shear stability. Especially suitable for resin free grinding.

Product Information

Chemical composition

Polyether modified polydimethylsiloxane solution

Typical Physicochemical Data

The data given in this data page are only typical values, not technical indicators of the product.

Density (20 ° C): 0.98 g/ml

Non volatile matter (60 min., 105 ° C): 60%

Solvent: dipropylene glycol monomethyl ether

Flash point: 78 ° C

Application field

Coating industry

Product features and advantages

VOK ®- DF 019 is particularly suitable for waterborne paint systems of polyurethane dispersions and polyurethane/acrylate composite dispersions as well as pigment concentrates. VOK is recommended to reduce microbubbles ®- DF 019 and VOK ®- DF 024 is compounded at a ratio of 3:2. Recommended dosage: 0.1-1% Additive dosage (purchase form) is based on the general formula.

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

Adding method and processing guidance

Due to the high incompatibility of additives, the defoamer must be added under high shear force to ensure good dispersion. Otherwise, it may cause system defects.

Printing ink and varnish

Product features and advantages

VOK ®- DF 019 is particularly suitable for waterborne finishing varnish based on acrylate dispersion, polyurethane dispersion and polyurethane/acrylate composite dispersion, as well as defoaming of pigment concentrate slurry. To reduce microbubbles, VOK ®- DF 019 and VOK ®- DF 024 is compounded at a ratio of 3:2, which proves to be very effective in concentrated pigment slurry.

Recommended use

The additive is particularly suitable for water-based systems and UV systems.

Recommended dosage

0.1-1% auxiliary dosage (purchased form) is based on the total formula.

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

Adding method and processing guidance

Due to the high incompatibility of additives, the defoamer must be added under high shear force to ensure good dispersion. Otherwise, it may cause system defects.