BYK-039

1 of 143 products in this brand
BYK-039 is a mineral oil-based, VOC- and silicone-free defoamer designed for aqueous emulsion systems with a PVC range of 35-70. It is free of alkylphenol ethoxylates (APE) and is particularly suitable for high-solid polyurethane (PUR) leather coatings. This defoamer effectively controls foam formation, improving the consistency and quality of coatings, while being compliant with industry requirements for silicone-free, VOC-free, and APE-free formulations. It is classified under the chemical families of mineral oils and paraffins, offering a high level of performance in various coating applications.

Functions: Defoamer

Chemical Family: Mineral Oils, Paraffins

End Uses: Polyurethane Coating

Labeling Claims: APE-free, Silicone-free, Volatile Organic Compound (VOC)-free

Technical Data SheetSafety Data Sheet
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Enhanced TDS

Identification & Functionality

Chemical Family
Mineral Oils,
Paraffins
Chemical Name
Distillates (petroleum), hydrotreated heavy paraffinic
Manufactured By
BYK-Chemie
CASE Ingredients Functions
Defoamer
Technologies
CASE
Product Families
CASE — Additives
Foam Control

Features & Benefits

Labeling Claims
APE-free,
Silicone-free,
Volatile Organic Compound (VOC)-free
CASE Ingredients Features
Improved Air Release,
Vacuum Deaeration

Applications & Uses

Markets
Building & Construction,
Paints & Coatings
Applications
Paints & Coatings — Building & Construction
Architectural Coatings
Building & Construction — Building Materials
Plasters & Renders
Application Area
Thrust Reversers Heat Shileding
Compatible Substrates & Surfaces
Leather
Coating End Applications
Polyurethane Coating
Use Level
0.1 - 0.5%
Product Application

Special Features and Benefits
The defoamer has a broad application spectrum and covers the PVC range of 35-70. BYK-039 is VOC-free (< 1500 ppm), silicone-free and does not contain alkylphenol ethoxylates. The additive is recommended for use in emulsion and exterior wall paints and emulsion plasters. In high-solid PUR leather coatings, BYK-039 facilitates vacuum deaeration and improves the air release after application.


Recommended Levels
0.1-0.5% additive (as supplied) based upon total formulation, in exceptional cases up to 0.8%. The above recommended levels can be used for orientation. Optimal levels are determined through a series of laboratory tests.


Incorporation and Processing Instructions
2/3 of the defoamer quantity is usually added to the millbase and 1/3 to the let-down or the finished paint.

Properties

Physical Form
Liquid
Typical Properties
ValueUnitsTest Method / Conditions
Volatile Organic Compounds - Free (does not contain alkylphenol ethoxylates)max.1500ppm-
Density (at 20°C)0.87g/ml-
SDS Physical and Chemical Properties
ValueUnitsTest Method / Conditions
Lower Explosion Limit0.6%V
Upper Explosion Limit6.5%V
Auto Ignition Tempertauremin. 200°CM0062, Analytics Wesel
Flash Pointmin. 100°CPensky-Martens Closed Cup
Initial Boiling Pointmin. 200°CDerived
Melting Pointmax. 0°CDerived
Density (at 20°C)0.87g/cm³Oscillating U-tube
Density (at 40°C)0.864g/cm³Oscillating U-tube
Vapour Pressuremax. 1hPaDerived
Kinematic Viscosity (at 40°C)98.34mm²/s-
Dynamic Viscosity (at 40°C)85mPa.sP/K 40°C
AppearanceLiquid--
ColorLight yellow--
Flammability (liquids)Sustains Combustion--
Immiscible InWater--
OdorSlight--
pH (at 20°C, Concentration: 1%)7-Universal pH-Value Indicator
Composition Data

Mixture of paraffinic mineral oils and hydrophobic components

Regulatory & Compliance

OEM Specifications
Bombardier BAMS552-008

Storage & Handling

Storage Information

Separation may occur. Mix well before use.