German technical background VOK-022 Defoamer replaces BYK-220

German technical background Volcker VOK ?- DF 021 Organic silicon defoamer

VOC free, used for water-based high gloss lotion system, dispersion, adhesive, printing ink and varnish. It is especially suitable for high gloss and satin system and airless spraying construction.

Product Information

Chemical composition

Mixture of foam breaking polysiloxane and hydrophobic particles in polyethylene glycol

Typical Physicochemical Data

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

Density (20 ° C): 1.00 g/ml

Storage and transportation

The product may delaminate. Mix well before use. Storage and transportation below 40 ° C.

Application field

Printing ink and varnish

Product features and advantages VOK ?- DF 021 is recommended as defoamer for printing ink and varnish of styrene acrylate, acrylate or acrylate/polyurethane.

Recommended dosage

0.05-0.8% auxiliary 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.

Coating industry

Product features and advantages

VOK ?- DF 021 is particularly suitable for coloring high gloss lotion system of styrene acrylate, acrylate or acrylate/polyurethane with pigment volume concentration in the range of 18-25. It is especially suitable for high gloss and satin system, even airless spraying construction.

Recommended dosage

0.1-0.8% auxiliary 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.

an adhesive

Product features and advantages VOK ?- DF 021 is recommended for defoaming of waterborne acrylate adhesives.

Recommended dosage

0.05-0.5% additive dosage (purchased 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.