Description

Silicone wetting agent for waterborne and radiation curable coatings, inks and varnishes. Viscosity of 10-30.

Applications

With a range of different functionalities and hydrophilicities, this family of wetting additives allows the formulator to choose exactly the right product for the formulation and substrate.

• Effective in both waterborne and radiation curable formulations

• Suitable across a wide range of substrates, including wood and plastics

• Suitable for use in food-packaging inks (Dow Corning® 67 Additive and Dow Corning® 501W Additive)

• Long lasting performance in high pH binders (Dow Corning® 500W Additive)

Description

Dow Corning® 501W Additives is low molecularweight organofunctional silicones that give excellent wetting properties in both waterborne and radiation curable coating formulations. These 100% active, low VOC additives offer formulation flexibility and effective performance at low addition levels. The excellent surface mobility of these additives can be demonstrated by the low surface tensions of aqueous solutions as shown in the typical properties above.

Features

• Recoatable

• No significant impact on slip properties

• Low VOC

• Effective at low addition levels

• BTX-free

• Dow Corning® 500W Additive is stable even at high pH

• All substances intentionally formulated in Dow Corning® 67 Additive are listed on Annex 6, Part A or Part B, of the Swiss Ordinance RS 817.023.21(1)

• All substances intentionally formulated in Dow Corning® 501W Additive are listed on Annex 6, Part B, and on Annex 5, Part B, of the Swiss ordinance RS 817.023.21(1)

Composition

• Solventless

• 100% silicone polyether copolymer

• Clear to slightly hazy colorless to amber liquids

How to Use

Even at low addition levels, these additives are effective on difficult-towet substrates such as wood and plastics. Recommended addition level for this family of wetting additives is 0.1- 0.4% as supplied, based on total formulation. Figure 1 demonstrates that excellent wetting performance can be achieved at levels as low as 0.2%. As low viscosity liquids, they can be added and incorporated easily during the letdown stage of the process.