BYK-019 is a silicone-containing defoamer for aqueous pigment concentrates used in coatings, printing inks, and overprint varnishes. It prevents foam during grinding and provides long-term and shear stability, making it particularly suitable for resin-free grinds or slurries.

Chemical Family: Polydimethylsiloxanes

Applicable Processes: Grinding Application

Compatible Polymers & Resins: Polyurethane Acrylates (PUA)

Features: Defoaming, Good Shear Stability, Prevents Microfoam Formation

Enhanced TDS

Identification & Functionality

Features & Benefits

CASE Ingredients Features
Industrial Additives Features

Applications & Uses

Markets
Applications
Applicable Processes
Application Area
Compatible Polymers & Resins
Coating End Applications
Industrial Additives End Use
Ink & Toner End Applications
Use Level
0.1 - 1% (Coatings Industry), 0.1 - 1% (Printing Inks and Overprint Varnishes)
Application Information

Coatings Industry
Special Features and Benefits

BYK-019 is particularly suitable for aqueous coating systems based on polyurethane dispersions and polyurethane/acrylate combinations and for defoaming pigment concentrates. To reduce microfoam, a combination of BYK-019 with BYK-024 in a ratio of 3:2 has proven successful.
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
Due to its high incompatibility, the defoamer must be incorporated at high shear forces to ensure a good distribution. Otherwise defects may occur in the system.

 

Printing Inks and Overprint Varnishes
Special Features and Benefits

BYK-019 is particularly suitable for aqueous overprint varnishes based on acrylate dispersions, polyurethane dispersions and polyurethane/acrylate combinations and for defoaming pigment concentrates. To reduce microfoam, a combination of BYK-019 with BYK-024 in a ratio of 3:2 has proven successful in defoaming pigment concentrates.
Recommended Use
The additive is particularly recommended for aqueous systems and UV systems.
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
Due to its high incompatibility, the defoamer must be incorporated at high shear forces to ensure a good distribution. Otherwise defects may occur in the system.

Properties

Physical Form
Typical Properties
ValueUnitsTest Method / Conditions
Density (at 20°C)0.98g/ml-
Non-Volatile Matter (60 min, at 105°C)60%-
Flash Point78.0°C-
SolventDipropyleneglycolmonomethylether--
SDS Physical and Chemical Properties
ValueUnitsTest Method / Conditions
Lower Explosion Limit1.3%V
Upper Explosion Limit8.7%V
Auto Ignition Tempertauremin. 200°CDIN 51794
Flash Point78°CPensky-Martens
Initial Boiling Point184°CDerived
Melting Pointmax. 0°CDerived
Density (at 20°C)0.977g/cm³Oscillating U-tube
Vapour Pressure (at 20°C)max. 1hPaDerived
AppearanceLiquid--
ColorLight yellow--
Immiscible InWater--
pH (at 20°C, Concentration: 10%)7-Universal pH-Value Indicator
Composition Data

Solution of a polyether-modified polydimethylsiloxane.

Regulatory & Compliance

OEM Specifications