German Technical Background VOK-UV 3570 Surface Additives It Can Reduce Surface Tension and Improve Surface Smoothness Replaces BYK-UV 3570

German technical background VOK®- Surface additives for UV 3570 radiation curing system

VOK®- UV 3570 is used as cross-linkable silicone surface additive for radiation curing coatings to reduce surface tension and improve surface smoothness.

Product Information

Chemical composition

Polydimethylsiloxane modified by polyester containing polyacrylate functional groups.

Typical Physicochemical Data

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

Density (20 ° C): 1.07 g/ml

Refractive index (20 ° C): 1.465

Effective ingredients: 70%

Solvent: propylene glycol diacrylate (PONPGDA)

Flash point: 62 ° C

Storage and transportation

Storage and transportation below 35 ° C.

Application field

Industrial coatings

Features and Benefits

Due to its high interfacial activity, VOK®- UV3570 will be directionally arranged on the film surface. Its acrylate functional group makes it cross-linked into the polymer network and fixed. The surface smoothness can be controlled by adjusting the amount of additives added, so that the surface smoothness can be controlled more easily. VOK®- UV3570 can also improve leveling, substrate wetting and powder matting. If the additive is fixed on the surface of the paint film through its reaction group, these properties will be maintained for a long time.

Recommended use

VOK®- UV3570 is specially recommended for all solvent-free radiation curing coatings.

Recommended dosage

0.1-3% of auxiliary dosage (purchased 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

It can be added at any stage, including after.