BYK-W 980 is a wetting and dispersing additive designed for ambient curing resin systems and adhesives. It reduces viscosity, prevents filler settling, and is particularly suitable for polyester molding compounds, wet mat molding, and pultrusion applications. This additive works effectively with various resins, including epoxies and acrylics, enhancing the dispersion and wetting properties of the system. Available in liquid form, it serves multiple functions as a dispersant and wetting agent in both composite materials and plastics & elastomers.

Chemical Family: Chemical Mixtures & Blends, Polyamine Amides - Polyesters Salt

Compatible Polymers & Resins: Acrylics, Epoxies (EP)

Processing Methods: Pultrusion, Wet Mat Molding

Enhanced TDS

Identification & Functionality

Features & Benefits

Applications & Uses

Compatible Polymers & Resins
Composites Processing Methods
Use Level
1 - 2 % (Additive - HMC Molding Compounds and Wet Mat Molding), 0.5 - 1.5 % (Additive - Pultrusion Applications), 0.5 - 1.5 % (Additive - Fillers for Ambient Curing Systems), 0.5 - 1.5 % (Additive - Fillers for Adhesives and Sealants)
Product Applications

Ambient Curing Systems
Special Features and Benefits

The wetting and dispersing additive improves the dispersion of all conventional fi llers, such as calcium carbonate and aluminum hydroxide. It reduces the viscosity of the fi lled resin, allowing a higher filling level. In most cases, the settling of fi llers during storage and processing is reduced.

Recommended Use
The additive is especially recommended for unsaturated polyester resins as well as acrylic, polyurethane and epoxy resins, and is highly effective in all areas of application.

Recommended Levels
0.5-1.5 % additive (as supplied) based upon fillers. The above recommended levels can be used for orientation. Optimal levels are determined through a series of laboratory tests.
Incorporation and Processing Instructions: For optimal performance, the additive should be incorporated before solids are added.

Adhesives & Sealants
Special Features and Benefits

The additive improves the wetting and dispersion of all mineral fi llers, such as calcium carbonate and aluminum hydroxide (ATH), which lowers viscosity and allows higher fi lling levels. At the same time, the sedimentation of fi llers is often reduced, preventing deposits. In many cases, the additive is more effective than BYK-W 966.

Recommended Use
The additive is particularly recommended for adhesives on the basis of polyurethane, epoxy and acrylic resins.

Recommended Levels
0.5-1.5 % additive (as supplied) based upon fi llers. The above recommended levels can be used for orientation. Optimal levels are determined through a series of laboratory tests.

Incorporation and Processing Instructions: For optimal performance, the additive should be incorporated before solids are added.

SMC, Wet Mat Molding and Pultrusion
Special Features and Benefits

The additive improves the wetting and dispersion of fi llers in wet mat molding and HMC polyester molding compounds. This lowers the viscosity, allows higher fi lling levels and improves glass fi ber wetting. In pultrusion applications, the additive improves the wetting and dispersion of fi llers, prevents the fi llers from settling in the impregnation bath, and improves glass fi ber wetting through lowered viscosity.

Recommended Use
The additive is particularly recommended for HMC polyester molding compounds, wet mat molding and pultrusion applications on the basis of UP/VE, epoxy and acrylic resins.
Recommended Levels

  • 1-2 % additive (as supplied) based upon fi llers for HMC molding compounds and wet mat molding.
  • 0.5-1.5 % additive (as supplied) based upon fi llers for pultrusion applications.

The above recommended levels can be used for orientation. Optimal levels are determined through a series of laboratory tests.
Incorporation and Processing Instructions : For optimal performance, the additive should be incorporated before solids are added.

Properties

Physical Form
Typical Properties
ValueUnitsTest Method / Conditions
Flash Point66°C-
Non Volatile Matter (at 150°C in 10 min)80%-
Density (at 20°C)0.99g/ml-
Acid Value40mg KOH/g-
Amine Value30mg KOH/g-
SDS Physical and Chemical Properties
ValueUnitsTest Method / Conditions
Lower Explosion Limit1%V
Upper Explosion Limit 10.6%V
Auto Ignition Tempertauremin. 200°CDIN 51794
Flash Point66°CPensky-Martens
Initial Boiling Point137°CDerived
Melting Pointmax. 18°CDerived
Density (at 20°C)0.99g/cm³Oscillating U-tube
Vapour Pressure (at 20°C)1hPaDerived
AppearanceLiquid--
ColorBrown--
Flammability (liquids)Sustains Combustion--
Miscible inWater--
OdorAlcohol-like--
pH (at 20°C, Concentration: 1%)7-Universal pH-Value Indicator
Composition Data

 Solution of a salt of unsaturated polyamine amides and acidic polyesters

Regulatory & Compliance

OEM Specifications

Storage & Handling

Storage Information

Mix well before use. Separation or turbidity possible. Warm to 30-60°C and mix well.