BYK-345 is a silicone surfactant for aqueous coatings, printing inks, and overprint varnishes. It provides a strong reduction in surface tension, significantly improving substrate wetting without increasing surface slip. This solvent-free alternative to BYK-346 is in liquid form and functions as a surfactant in waterborne coatings and varnishes

Functions: Surfactant

End Uses: Varnishes, Waterborne Coating

Enhanced TDS

Identification & Functionality

Manufactured By
CASE Ingredients Functions
Technologies
Product Families

Features & Benefits

CASE Ingredients Features

Applications & Uses

Coating End Applications
Use Level
0.05 - 0.5%
Product Application

Coatings and Printing Inks
Special Features and Benefits

The additive provides a large decrease in surface tension in aqueous systems and therefore improves substrate wetting and leveling in particular. Foam stabilization does not occur or only very minimally and recoatability is not affected. The additive does not increase surface slip. If higher surface slip is desired, we recommend combining it with a polysiloxane such as BYK-333.
Recommended Use
The additive is recommended for all aqueous coatings, printing inks and overprint varnishes which contain a small proportion of organic co-solvent.
Recommended Levels
0.05-0.5% additive (as supplied) based upon total formulation. The above recommended levels can be used for orientation. Optimal dosage levels are determined through a series of laboratory tests.
Incorporation and Processing Instructions
The additive is preferably added to the finished formulation. It can, however, be added at any stage during production.

Properties

Physical Form
Typical Properties
ValueUnitsTest Method / Conditions
Active Substance100%-
Density (at 20°C)1.04g/ml-
SDS Physical and Chemical Properties
ValueUnitsTest Method / Conditions
Kinematic Viscosity (at 20°C)62.5mm²/s-
Ignition Temperaturemin. 392°FDIN 51 794/ DIN prEN 14 522
Density (at 20°C)1.04g/cc4 (Oscillating U-tube, at 20°C)
Flash Pointmin. 212°F49 (Pensky-Martens)
Vapor Pressure (at 68°F)max. 1hPa-
Initial Boiling Pointmin. 392°F-
Melting Pointmax. 32°F-
Immiscible inWater--
pH Value (at 20°C, 10% Concentration)7--
ColorGrey, Light Brown--
AppearanceLiquid--
Note

Solvent-free version of BYK-346. The additive requires a small amount of co-solvent in the formulation (approx. 5% of the total solvent content) in order to avoid turbidity. The effectivity of the silicone surfactant is reduced in systems with higher co-solvent amounts. For these types of formulations we recommend the use of polysiloxanes such as BYK-333.