BYK-028 is a VOC-free, silicone-containing defoamer for aqueous high-gloss emulsion systems and adhesives. It is easy to incorporate.

Chemical Family: Chemical Mixtures & Blends, Polysiloxanes

Labeling Claims: Hazardous Air Pollutants (HAPs)-free, Volatile Organic Compound (VOC)-free

Compatible Polymers & Resins: Polyurethane Acrylates (PUA)

Features: Defoaming, Easy Handling, High Gloss

Enhanced TDS

Identification & Functionality

Features & Benefits

Applications & Uses

Application Area
Compatible Polymers & Resins
Adhesive & Sealant End Applications
Use Level
0.1 - 1% (Coatings Industry), 0.05 - 1% (Adhesives)
Application Information

Coatings Industry
Special Features and Benefits

BYK-028 is the standard defoamer for aqueous emulsion systems and the starting point for series testing with similar products. The defoamer is particularly recommended for high gloss emulsion systems based on acrylate/polyurethane or polyurethane in the PVC range of 0 to 25 and is easy to incorporate.
Recommended Levels
0.1-1% additive (as supplied) based upon total formulation.
The above recommended levels can be used for orientation. Optimal levels are determined through a series of laboratory tests.
Incorporation and Processing Instructions
The additive can be added at any time during production. The amount of defoamer used is often divided (by adding 2/3 into the millbase and 1/3 into the let-down or finished product).

 

Adhesives
Special Features and Benefits

BYK-028 is recommended for defoaming all common aqueous adhesive systems.
Recommended Levels
0.05-1% additive (as supplied) based upon total formulation.
The above recommended levels can be used for orientation. Optimal levels are determined through a series of laboratory tests.
Incorporation and Processing Instructions
The additive can be added at any time during production.

Properties

Physical Form
Typical Properties
ValueUnitsTest Method / Conditions
Density (at 20°C)1.05g/ml-
SDS Physical and Chemical Properties
ValueUnitsTest Method / Conditions
Dynamic Viscosity (at 20°C)approx. 2,660mPa.sP/K 20°C
Density (at 20°C)1.045g/cc4 (Oscillating U-tube, at 20°C)
Flash Point336°F49 (Pensky-Martens)
Vapor Pressure (at 20°C)max. 0.10 hPaDerived
Initial Boiling Point (Decomposition)min. 482°FDerived
Immiscible inWater--
Solidification / Setting Pointmax. -22°FDerived
pH Value (at 20°C, Concentration: 10%)7
OdorSlight--
ColorGray - Light Yellow, Cloudy--
AppearanceLiquid--
Composition

Compound of modified polysiloxanes, polyether and hydrophobic particles

Regulatory & Compliance

Chemical Inventories
OEM Specifications

Storage & Handling

Storage Conditions

Separation may occur. Mix well before use.