German Technical Background VOK-A550 Defoamer Good Defoaming Performance Replaces BYK-A550

German technical background VOK ®- DF A550 defoamer, without organic silicon, is used for solvent-free and solvent unsaturated polyester (UP) systems and adhesives. Good defoaming performance, not easy to produce turbidity in unsaturated polyester resin. Especially suitable for transparent systems.

Product Information

Chemical composition

Foam breaking polymer solution, without organic silicon

Typical Physicochemical Data

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

Density (20 ℃): 0.87 g/ml

Refractive index (20 ℃): 1.501

Flash point: 47 ° C

Chroma value:<250

Turbidity:<5 TE/F

Application field

Adhesives&Sealants

Product features and advantages

VOK ®- DF A550 is a defoamer for various solvent based and solvent-free adhesives and sealants, especially recommended for epoxy resin systems.

Recommended dosage

0.1-0.5% of auxiliary dosage (form of supply) 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

Add other components to the resin before adding them.

Room temperature curing system

Product features and advantages

VOK ®- DF A550 shows good defoaming performance and is not easy to produce turbidity in unsaturated polyester resin.

Recommended use

Especially recommended for transparent unsaturated polyester resin, gel coat and casting system.

Recommended dosage

0.1-0.5% of auxiliary dosage (form of supply) 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

Add other components to the resin before adding them.