DISPERBYK® 115 is a wetting and dispersing additive for solvent-borne industrial coatings, architectural coatings, and pigment concentrates. It is designed to stabilize pigments.

Chemical Family: Chemical Mixtures & Blends

Features: High Color Strength, High Gloss, High Pigment Loading, Transparency

Enhanced TDS

Identification & Functionality

Features & Benefits

Applications & Uses

Markets
Applications
Application Area
Coating End Applications
Use Level
10 - 25% (Inorganic Pigments), 2 - 4% (Titanium Dioxide), 25 - 65% (Organic Pigments), 50 - 100% (Carbon Black)
Application Information

Coatings industry
Special features and benefits

The additive deflocculates pigments by steric stabilization. It also generates a uniform electrical charge in the pigment particles. The resulting repulsion effect and the steric stabilization prevent any coflocculation which leads to non-floating coloring in pigment blends. As a result of the small particle sizes of the deflocculated pigments, high levels of gloss can be achieved and the color strength is improved. In addition, the transparency is increased in transparent pigments and the hiding power in opaque pigments. The viscosity is reduced. In this way, the flow characteristics are also improved and higher pigment loading is possible.
Recommended use
DISPERBYK® 115 is recommended for industrial coatings and high-quality architectural coatings. As a result of its broad compatibility and the reduction in millbase viscosity it is well suited to the formulation of pigment concentrates.

Recommended levels
Additive dosage as supplied based on pigment:
Inorganic pigments: 10 - 25%
Titanium dioxide: 2 - 4%
Organic pigments: 25 - 65%
Carbon black: 50 - 100%
The above recommended levels can be used for orientation. The optimum dosage should be determined by application-related test series.
Incorporation and processing instructions
For optimum performance, the additive must be incorporated into the millbase before addition of pigments. Pre-mix the resin and solvent components of the millbase and then gradually let the additive flow in whilst stirring. Only add the pigments when the additive has been thoroughly distributed.

Properties

Physical Form
Typical Properties
ValueUnitsTest Method / Conditions
Density (at 20°C)0.96g/ml-
Solvent (Butyl Acetate)1--
Solvent (Methoxypropyl Acetate)1--
Solvent (Xylene)5--
Amine Value25mg KOH/g-
Non-Volatile Matter (20 min, at 150°C)52%-
Flash Pointmin. 24°C-
SDS Physical and Chemical Properties
ValueUnitsTest Method / Conditions
Kinematic Viscosity (at 40°C)30mm²/s-
Ignition Temperaturemin. 392°FDIN 51794
Immiscible InWater--
Density (at 20°C)0.96g/cc4 (Oscillating U-tube, at 20°C)
Lower Explosion Limit1%V-
Upper Explosion Limits 10.8 %V
Flash Point75.2°F48 (Abel-Pensky)
Vapor Pressure (at 20°C)8hPaDerived
Initial Boiling Point255.2°FDerived
Melting Pointmax. 41°FDerived
pH Value (at 20°C, 1% Concentration)6-Universal pH Value Indicator
OdorSolvent-like--
AppearanceLiquid
ColorYellow
Composition Data

Solution of a modified polyurethane 

Note

The treatment of some organic pigments can negatively influence the effectiveness of the additive.  In these cases, tests with the untreated pigment of the same type may be successful.

Regulatory & Compliance

Storage & Handling

Storage Conditions

Separation or turbidity may occur at temperatures below 10 °C. Heat to 20 °C and mix well.