Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

​BYK DISPERBYK-163 Wetting Dispersans Agent

BYK DISPERBYK-163 is a solvent-based wetting and dispersing agent with a modified polyurethane structure, designed for solvent-borne coatings, inks, and pigment concentrates. Its block copolymer with pigment-affinic groups ensures steric stabilization of inorganic/organic pigments, compatible with alkyd, acrylic, and aldehyde resin systems, while optimizing viscosity reduction and flow properties

Effect of BYK DISPERBYK-163 Wetting Dispersans Agent

  1. Steric Stabilization - Prevents pigment re-flocculation via spatial hindrance and uniform charge distribution

  2. Broad Compatibility - Works with alkyds, acrylics, and aldehyde resins in solvent/solvent-free systems

  3. Process Efficiency - Reduces grinding time by 30-50% and lowers viscosity for higher pigment loading

  4. Optical Enhancement - Improves gloss, transparency (organic pigments), and hiding power (inorganics)

  5. Non-Migrating - High molecular weight ensures durability without affecting film properties

Typical Applications of BYK DISPERBYK-163 Wetting Dispersans Agent

  1. Industrial Coatings - Alkyd-based machinery finishes with anti-settling requirements

  2. Automotive Refinish - High-color-strength basecoats with carbon black dispersion

  3. Wood Coatings - Acid-cured systems needing improved pigment acceptance

  4. Printing Inks - Flexographic/gravure inks for packaging films (FDA compliant)

  5. Pigment Concentrates - Universal color pastes (up to 60% organic pigment loading)

Technical Data of BYK DISPERBYK-163 Wetting Dispersans Agent

Chemical BaseModified polyurethane with pigment-affinic groups
Solvent SystemXylene/butyl acetate/PMA (3/1/1)
Amine Value10 mg KOH/g
Density (20°C)0.99 g/ml
Flash Point28°C
Storage Stability60 months (unopened, <0°C may stratify)


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