German technical background VOK-250 Wetting dispersant Scratch resistant and easy to clean replaces BYK-250

German technical background VOK ®- Disper 250 Wetting Dispersant

VOK ®- UV 3505 is a cross-linked surface additive used in radiation curing system to improve the wettability, scratch resistance and easy cleaning performance of substrate.

Product Information

Chemical composition

Polydimethylsiloxane solution modified by polyacrylate functional group.

Typical Physicochemical Data

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

Density (20 ° C): 1.06 g/ml

Refractive index: 1.456

Effective ingredients: 40%

Solvent: Tripropylene glycol diacrylate

Flash point:>60 ° C

Storage and transportation

The product must be within 35 ˚ C Storage and transportation below. Special warning to avoid direct sunlight.

Application field

Coating industry

Features and Benefits

VOK ®- UV 3505 strongly reduces the surface tension and improves the wettability of the substrate, even on the substrate that is difficult to wet. Improve the smoothness, scratch resistance and easy cleaning effect of the coating. VOK ®- UV 3505 can be cross-linked with radiation curing system to produce lasting effect. Its recoating property must be tested, and surface grinding is recommended. The product has very good compatibility and will not cause fog shadow of the coating. VOK ®- UV 3505 is applicable to solvent-free, solvent based and water-based systems.

Recommended use

Wood and furniture coatings

Industrial coatings

Recommended dosage

0.1 – 0.3% of auxiliary dosage (purchase form) is based on the general formula, and can be greater than 1% in case of special use.

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

The addition method and processing guidance can be added at any stage, including post addition.

Special reminder

The additives contain reactive functional groups that can be cross-linked with the radiation curing system.

Printing ink

Features and Benefits

VOK ®- UV 3505 can improve the substrate wettability and leveling of 100% UV curing varnish. Due to VOK ®- UV 3505 strongly reduces the surface tension. This product is very suitable for wetting difficult to wet substrates and traditional offset printing inks. The additive can reduce the coefficient of friction (COF) and has good tape peeling effect. VOK ®- UV 3505 has good compatibility with conventional resin systems. It is applicable to UV varnish with high transparency requirements, and can improve the gloss.

Recommended use

100% solid UV varnish

Offset printing ink

Recommended dosage

0.3-1% auxiliary dosage (purchase 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.