German Technical Background VOK-1781 Defoamer It Has a Good Defoaming Effect Replaces BYK-1781

German technical background VOK®- DF 1781 Defoamer

VOK®- DF 1781 silicone defoamer is used to eliminate micro bubbles generated during construction of water-based system.

Product Information

Chemical composition: polyether modified polydimethylsiloxane containing hydrophobic particles

Typical Physicochemical Data

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

Active substance: 99.99%

Density (20 ° C): 1.00 g/ml

Flash point: about 87 ° C

Application field

Coating industry

Product features and advantages

VOK®- DF 1781 has high efficiency in water-based system, especially in the system using airless/mixed air spraying construction. The additive provides good anti microbubble ability for the paint, and does not affect the transparency and luster of the high gloss system. VOK®- DF 1781 can be used in paints and varnishes. Solvent free. Even in aqueous UV system, VOK®- DF 1781 also has good defoaming effect.

Recommended use

Architectural coatings

Wood and furniture coatings

Anticorrosive coating

Industrial coatings

Recommended dosage

0.3-1% auxiliary dosage (supply form) is based on the general formula.

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

Adding method and processing guidance

When adding, enough high shear force must be provided to ensure good dispersion of defoamer, so as to prevent shrinkage.