German technical background VOK-349 leveling agent It can reduce the surface tension of water-based coatings replaces BYK-349

German technical background VOK®-SL 349 silicone leveling agent

Chemical composition

Polyether-modified siloxanes

Product information

Typical physicochemical data

The data presented on this data page is typical and not a product specification.

Active ingredient: 100 %

Density (20 °C): 1.04 g/ml

Special reminder

This additive is suitable for systems that do not contain organic co-solvents, where the effect of silicone surfactants is reduced in systems with a high co-solvent content, where we recommend silicone polymer surfactants such as VOK®-SL 333.

Application areas

Coatings industry

Features and benefits

This additive significantly reduces the surface tension of waterborne coatings and is particularly suitable for improving substrate wetting and leveling of systems. It may have a slight foam stabilization, does not increase surface slip, and does not affect recoating.

The additive is particularly recommended for all co-solvent-free water-based coatings, in particular styrene-acrylic, pure propylene, acrylic/polyurethane, polyurethane and baking paint systems.

Recommended dosage

0.05-0.5 % additive dosage (form of supply) is based on total formulation.

The above recommended dosage is for reference, and a good dosage needs to be determined by a series of tests.

Addition method and processing guidance

The additive can be added at any stage of production and we recommend adding it at the final production stage of the coating.

Adhesives and sealants

Features and benefits

VOK®-SL 349 is a highly effective silicone surfactant that drastically reduces the surface tension of water-based adhesives and can therefore be used to wet substrates that are particularly difficult to wet.

Recommended dosage

0.05-0.5 % additive dosage (form of supply) is based on total formulation.

The above recommended dosage is for reference, and a good dosage needs to be determined by a series of tests.

Addition method and processing guidance

The additive can be added at any stage of production and we recommend adding it at the final production stage of the coating.

Care supplies and polishing materials

Features and benefits

VOK®-SL 349 is a highly effective silicone surfactant that strongly reduces the surface tension of the system and improves substrate wetting and leveling of curing products. It may have a slight foam stabilization, which does not affect the subsequent coating application and does not increase surface slip.

Recommended Use

The additive is particularly recommended for plasticizer-free curing products and wax cleaners.

Recommended dosage

0.05-0.5 % additive dosage (form of supply) is based on total formulation.

The above recommended dosage is for reference, and a good dosage needs to be determined by a series of tests.

Addition method and processing guidance

The additive can be added at any stage of production and we recommend adding it at the final production stage of the coating.