DISPERBYK® 163 is a wetting and dispersing additive for solventborne coatings and pigment concentrates. It stabilizes pigments of all types and is highly compatible with aldehyde and acrylate-based grinding resins. This additive enhances color strength, reduces mill base viscosity, and provides high gloss and transparency. It is ideal for use in solventborne coatings, coil coatings, and pigment concentrates, offering broad compatibility with acrylate resins and improving performance in various coating applications.

Chemical Family: Polyurethanes (PU)

Compatible Polymers & Resins: Acrylates

Features: High Color Strength, High Gloss, Reduces Mill Base Viscosity, Transparency

Enhanced TDS

Identification & Functionality

Features & Benefits

CASE Ingredients Features
Key Features
  • The additive deflocculates pigments and stabilizes them by means of steric hindrance.
  • It provides equal electrical charge to the pigment particles.
  • The resulting repulsion and the steric stabilization prevent a possible co-flocculation, which leads to flood and float-free color in pigment mixtures.
  • The deflocculating properties of the additive increase gloss, color strength, transparency, and hiding power and reduce the viscosity of the millbase.

Applications & Uses

Markets
Applications
Compatible Polymers & Resins
Coating End Applications
Industrial Additives End Use
Use Level
80 - 100% (Carbon Blacks), 30 - 60% (Organic Pigments), 4 - 5% (Titanium Dioxide), 15 - 20% (Inorganic Pigments)
Processing Instructions
  • For optimum performance, the additive must be incorporated into the millbase before addition of pigments.
  • The resin and solvent components of the millbase are pre-mixed and then the additive is slowly incorporated while stirring continuously.
  • Do not add the pigments until the additive has been fully distributed.
  • Post-addition (to repair faulty batches) is possible as long as the product is added slowly and under high shear forces.

Properties

Typical Properties
ValueUnitsTest Method / Conditions
Flash Point28°C-
SolventsXylene/Butylacetate/Methoxypropylacetate 3/1/1--
Non-Volatile Matter (20 min, at 150°C)45%-
Density (at 20°C)0.99g/ml-
Amine Value10mg KOH/g-
SDS Physical and Chemical Properties
ValueUnitsTest Method / Conditions
Kinematic Viscosity (at 40°C)180mm²/s-
Ignition Temperaturemin. 392°FDIN 51794
Immiscible InWater--
Density (at 20°C)0.9925g/cc4 (Oscillating U-tube, at 20°C)
Lower Explosion Limit1.2%V-
Flash Point28°C48 (Abel-Pensky)
Vapor Pressure (at 20°C)7hPaCalculated
Initial Boiling Point124°CEstimated
pH Value (at 20°C, 1% Concentration)5-Universal pH Value Indicator
OdorEster-like--
AppearanceYellow liquid--
Upper Explosion Limits12%V-
Special Note
  • The after-treatment of some organic pigments may negatively affect the efficiency of the additive.
  • In such cases, tests with the untreated pigment of the same type may be successful.
  • When used in coil coatings, the interaction of this cationic additive with the acid catalyst must be taken into account.
  • Amine-blocked acids are less suitable than free acids or epoxy-blocked acids.
  • This problem can be avoided by using additives from the DISPERBYK-170 product line.

Storage & Handling

Storage Information

Separation or turbidity may occur at temperatures below 0 °C. Warm to 20 °C and mix well.