BYK DISPERBYK 163 Wetting and Dispersing Additive

Product Introduction
Wetting and dispersing additive for solvent-borne coatings and pigment concentrates. Can stabilize all kinds of pigments. With broad compatibility, it is suitable for solvent-based general-purpose pigment concentrates with aldehyde or acrylic resins as grinding resins.

Chemical composition
High molecular weight block copolymer solution containing pigment affinity groups

Typical materialized data
The data given on this data page are only typical values, not the technical indicators of the product.

Current Status of Food Contact Regulations
For information on the food contact regulatory status of this product, please contact our Product Safety Department.

Storage and Shipping
Separation or cloudiness may occur at temperatures below 0 °C, heat to 20 °C and mix well.

Special attention
Certain organic pigmentsSurface preparations can adversely affect the effectiveness of the wetting and dispersing additive. In this case, untreated pigments of the same type can be tried.
When used in coil coatings, the interaction between the cationic additive and the acid catalyst must be considered. Free acids or epoxy-blocked acids are more suitable than amine-blocked acids. This problem can be avoided by using the DISPER BYK-170 series.

Application : Paint industry

Features and Benefits
This high molecular weight additive deflocculates and stabilizes pigments through steric hindrance. DISPER BYK-163 imparts an equal charge to the pigment particles. The resulting repulsive force and steric stabilization can effectively avoid possible co-flocculation, so that the multi-pigment system will not produce color floating and blooming. The additive's deflocculating properties increase the gloss, color strength, clarity and hiding power of coatings while reducing the viscosity of the millbase.

Recommended Apps
DISPER BYK-163 has broad compatibility and can be used in various solvent-based formulations. Can also be used for post-fixing of problem paint. For some new applications, newer additives such as DISPER BYK-2163 and DISPER BYK-2164 are recommended.

recommended dosage
The amount of additives (in the form of purchase) is based on the pigment:

The above data is the empirical dosage, and the optimal dosage needs to be determined through a series of experiments.

Joining method and processing guidance
For best performance, additives should be added to the millbase before adding pigments. The resin and solvent components of the grinding base are pre-mixed first, and then the additives are slowly added under constant stirring. Do not add pigments before the additives are mixed evenly. Problematic coatings can be remedied by post-addition, which requires slow addition under high shear conditions.