BYK-141 is a silicone- and polymer-containing defoamer for solvent-borne and solvent-free coating systems, adhesives, sealants, and polyurethane-based thermosets.

Chemical Family: Chemical Mixtures & Blends, Polysiloxanes, Polyurethanes (PU)

Labeling Claims: Hazardous Air Pollutants (HAPs)-free, Solvent-free

Compatible Polymers & Resins: Epoxies (EP), Polyurethanes (PU)

Enhanced TDS

Identification & Functionality

Features & Benefits

Applications & Uses

Markets
Applications
Application Area
Compatible Polymers & Resins
Compatible Substrates & Surfaces
Adhesive & Sealant End Applications
Coating End Applications
Use Level
0.1 - 1% (Thermosets), 0.1 - 0.7% (Coatings Industry), 0.1 - 1% (Adhesives and Sealants)
Application Information

Coatings industry
Special features and benefits

BYK-141 is a defoamer for all solvent-borne and solvent-free coating systems.

Recommended levels
0.1–0.7% additive (as supplied) based upon total formulation.
The above recommended levels can be used for orientation. The optimum dosage should be determined by application-related test series.
Incorporation and processing instructions
To achieve optimal defoaming, the defoamer should be added to the millbase. If it is incorporated at a later time, sufficient shear forces must be ensured in order to achieve good defoamer distribution and to prevent crater formation.

 

Thermosets
Special features and benefits

Air release agent to prevent foam and bubbles during the manufacture and application of ambient curing plastic applications.
Recommended use
Recommended for transparent casting compounds as well as filled polyurethane-based electro casting systems.
Recommended levels
0.1–1% additive (as supplied) based upon total formulation.
The above recommended levels can be used for orientation. The optimum dosage should be determined by application-related test series.
Incorporation and processing instructions
Incorporate into resin before adding the other components. Can also be added to complete systems.

 

Adhesives and sealants
Special features and benefits

BYK-141 is a defoamer for all solvent-borne and solvent-free adhesives and sealants, especially also for epoxy and polyurethane systems.
Recommended levels
0.1 - 1% additive in delivery form on total formulation.
The above recommended levels can be used for orientation. The optimum dosage should be determined by application-related test series.
Incorporation and processing instructions
Stir into the resin before adding other components. Addition into finished systems is also possible.

Properties

Physical Form
Typical Properties
ValueUnitsTest Method / Conditions
Density (at 20°C)0.87g/cm³-
Solvent (Isobutanol)2--
Non-Volatile Matter (10 min, at 150°C)3.2%-
Solvent (Alkyl Benzenes)11--
Flash Point28.0°C-
SDS Physical and Chemical Properties
ValueUnitsTest Method / Conditions
Surface Tension24mN/mRing dynamometer
Kinematic Viscosity (at 40°C)4mm²/s-
Ignition Temperaturemin. 200°CDIN 51794
Density (at 20°C)0.866g/cc4 (Oscillating U-tube, at 20°C)
Lower Explosion Limit1%V-
Immiscible inWater--
Upper Explosion Limits10.7%V
Flash Point28°C48 (Abel-Pensky)
Vapor Pressure (at 20°C)6.00hPaCalculated
Initial Boiling Point106°C-
Melting Pointmax. 0°C-
pH Value (at 20°C, 1% Concentration)7-Universal pH-Value Indicator
OdorAromatic--
ColorColorless--
AppearanceLiquid--
Composition Data

Solution of foam-destroying polymers and polysiloxanes

Regulatory & Compliance

Chemical Inventories
OEM Specifications