BYK-A 501 is a silicone-free air release additive for unsaturated polyester resins, as well as polyurethane and epoxy systems. It functions as a defoamer, effectively reducing foam in casting processes. It is compliant with DSL (Canada) and TSCA (USA) chemical inventories. This liquid additive is silicone-free and suitable for various industrial and CASE applications.

Chemical Family: Hydrocarbons

Labeling Claims: Silicone-free

Compatible Polymers & Resins: Unsaturated Polyester (UPE)

Processing Methods: Casting

Enhanced TDS

Identification & Functionality

Features & Benefits

Labeling Claims

Applications & Uses

Markets
Applications
Compatible Polymers & Resins
Coating End Applications
Plastics & Elastomers Processing Methods
Use Level
0.1 - 0.5% (additive total formulation)
Product Applications

Ambient Curing Systems
Special Features and Benefits

BYK-A 501 is a highly effective air release additive for virtually all unsaturated polyester resins and processing techniques and is also recommended for epoxy resin systems.

Recommended Use
Particularly recommended for unsaturated polyester resins and epoxy resins, gel coats and casting systems.

Recommended Levels
0.1-0.5% additive (as supplied) based on the 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 : Stir in the resin before adding other components. In some resins, air release additives may cause haze in the finished part.

Properties

Physical Form
Typical Properties
ValueUnitsTest Method / Conditions
Turbiditymax. 10TE/F-
Hazen Color Numbermax. 200--
Flash Point46°C-
Refractive Index (at 20°C)1.5--
Density (at 20°C)0.89g/ml-
SDS Physical and Chemical Properties
ValueUnitsTest Method / Conditions
Kinematic Viscosity (at 40°C)27--
Kinematic Viscosity (at 20°C)44mm²/s-
Ignition Temperaturemin. 392°FDIN 51794
Density (at 20°C)0.89g/cc4 (Oscillating U-tube, at 20°C)
Lower Explosion Limit1%V-
Explosion Limits (Upper)12%V-
Flash Point114.8°FAbel-Pensky
Vapor Pressure (at 20°C)5hPaDerived
Initial Boiling Point294.8°FDerived
Melting Pointmax. 32°FDerived
pH Value (at 20°C, 1% Concentration)7-Universal pH-Value Indicator
OdorSolvent-like--
Immiscible inWater--
ColorLight yellow--
AppearanceLiquid--

Regulatory & Compliance

Chemical Inventories