DISPERBYK® 191

Adhesives and sealants
Special features and benefits
The additive improves the dispersion quality of fillers and pigments. By means of steric stabilization it deflocculates the pigments and fillers and reduces viscosity. In this way, the flow characteristics are also improved and higher pigment loading is possible.
Recommended use
The additive is particularly recommended if the fillers and pigments are to be dispersed directly in the aqueous binder.
Recommended levels
Amount of additive (as supplied) based upon pigment:
Inorganic pigments: 6–13%
Titanium dioxide: 4–7%
Organic pigments: 19–50%
Carbon black: 30–90%
Fillers: 1–3%
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 should be added slowly to the shear-stable dispersion whilst stirring. Only add the fillers and pigments once the additive has been homogeneously and uniformly distributed.

Coatings industry
Special features and benefits
The additive deflocculates pigments by means of steric stabilization. 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.  Transparency and hiding power also increase and viscosity is reduced. In this way, the flow characteristics are also improved and higher pigment loading is possible.

Recommended levels
Amount of additive (as supplied) based upon pigment:
Inorganic pigments: 6–13%
Titanium dioxide: 4–7%
Organic pigments: 19–50%
Carbon black: 30–90%
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 should be added slowly (whilst stirring) to the grinding resin, the co-solvent blend or the shear-stable dispersion. In systems without binders, the additive is simply mixed with the water. Only add the pigments once the additive has been homogeneously and uniformly distributed.

Home Care and I&I
Special features and benefits
The additive improves the dispersion of scouring agents and other insoluble solids. It ensures deflocculation of the particles through steric stabilization and has a positive influence on rheological behavior. This enables a higher solid content.
Recommended use
The additive is particularly recommended if the insoluble solids are to be dispersed directly in the aqueous medium.

Recommended levels
Amount of additive (as supplied) based upon pigment:
Inorganic pigments: 6–13%
Titanium dioxide: 4–7%
Carbon black: 30–90%
Fillers: 1–3%
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 should be added slowly to the shear-stable formulation whilst stirring. The solids should only be added once the additive has been homogeneously and uniformly distributed.

Polyether-modified polyacrylate salt