German technical background  VOK- 333 leveling agent

VOK-333 is used as a silicone surface additive for solvent-borne, solvent-free and aqueous systems. Suitable for coatings, inks, adhesives and room temperature curing plastic systems to strongly reduce surface tension. 

Product information 

Chemical composition 

Polyether modified polydimethylsiloxane. 

Typical physicochemical data 

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

Density (20 °C): 1.04 g/ml 

Storage and transportation 

Cloudiness and delamination may occur at temperatures below 5 °C, heat to 20 °C and mix well before use. 

Application areas 

Coatings and printing inks 

Features and benefits 

The additive drastically reduces the surface tension of coatings and printing inks, thus improving substrate wetting and preventing cratering. At the same time, it can also improve the surface slip and gloss. In aqueous systems, blocking resistance can be improved. 

Recommended Use 

The additive is recommended for all solvent-borne, solvent-free and waterborne coatings, printing inks and varnishes. 

Recommended dosage 

0.05-0.3 % additive dosage (supply form) is based on the total formulation, and waterborne and UV systems can be added up to 1%. 

The above recommended dosage is for reference only, and the appropriate dosage needs to be determined after a series of tests.

Addition method and processing guidance 

The additive can be added at any stage of production, including post-adding. 

Special reminder 

Unlike ordinary silicone fluids, the additive is "user safe". However, before use, a series of tests should be carried out to confirm whether the additive is foam stabilizing, in addition to evaluating its recoating and crater tendencies. 

Adhesives and sealants 

Features and Benefits VOK-333® is a highly effective silicone surface additive for silicone. It drastically reduces surface tension and therefore enhances the wetting of the system on demanding substrates. 

Recommended Use 

It is particularly recommended for improving the wettability of polyurethane, epoxy and acrylate adhesives on substrates. 

Recommended dosage 

0.05-0.3% Additive dosage (form of supply) is based on total formulation. 

The above recommended dosage is for reference only, and the appropriate dosage needs to be determined after a series of tests. 

Addition method and processing guidance 

The additive can be added at any stage of production, including post-adding. 

Special reminder 

Unlike ordinary silicone fluids, the additive is "user safe". However, before use, a series of tests should be carried out to confirm whether the additive is foam stabilizing, in addition to evaluating its recoating and crater tendencies.

Room temperature curing system 

Features and benefits 

VOK-333 is a highly effective silicone surface additive for silicones. It drastically reduces surface tension and therefore enhances the wetting of the system on demanding substrates. 

Recommended Use 

It is particularly recommended for improving substrate wetting capacity of polyurethane and epoxy-based room-temperature curing plastics. 

Recommended dosage 

0.05-0.3% Additive dosage (form of supply) is based on total formulation. 

The above recommended dosage is for reference only, and the appropriate dosage needs to be determined after a series of tests. 

Addition method and processing guidance 

The additive can be added at any stage of production, including post-adding. However, in order to reduce the foam stabilizing effect of the additives, it is recommended to add them at the final stage of manufacturing. 

Special reminder 

Unlike ordinary silicone fluids, the additive is "user safe". However, before use, a series of tests should be carried out to confirm whether the additive is foam stabilizing, in addition to evaluating its recoating and crater tendencies