Effect of BYK-170 Wetting and Dispersing Agents
Molecular Advantage - Ultra-high MW for enhanced stabilization
System Specialist - Tailored for acid-catalyzed chemistries
Universal Performance - Effective for inorganic/organic pigments
Process Optimizer - Reduces viscosity for improved flow
Surface Enhancer - Boosts gloss and color intensity
Typical Applications of BYK-170 Wetting and Dispersing Agents
Coil Coatings - Pre-painted metal substrates
PVdF Systems - Architectural fluoropolymer coatings
Industrial Topcoats - Factory-applied protective finishes
Acid-Cured Polyesters - Durable chemical-resistant coatings
High-Performance Primers - Heavy-duty corrosion protection
Technical Data of BYK-170 Wetting and Dispersing Agents
| Base Chemistry | Modified polyurethane |
| Solvent System | PGMEA/Butyl acetate |
| Storage Stability | 24 months (20°C) |
| Freeze-Thaw Stability | Requires rehomogenization |
| pH Stability Range | 4.0-9.0 |
BYK-170 Wetting and Dispersing Agents – Frequently Asked Questions (FAQ)
Q1: What types of pigments is BYK-170 especially effective for?
A: BYK-170 is particularly well-suited for stabilizing inorganic pigments such as titanium dioxide, iron oxides, and carbon black, as well as many organic pigments commonly used in solvent-borne and high-solids coatings. Its molecular structure provides strong anchoring and steric stabilization in non-aqueous systems.
Q2: Can BYK-170 be used in waterborne systems?
A: BYK-170 is primarily designed for solvent-borne and high-solids coating systems. It is not recommended for pure waterborne formulations due to its low water solubility and lack of hydrophilic functionality; alternative BYK dispersants with ionic or polyether-based stabilization are preferred for aqueous media.
Q3: How should BYK-170 be incorporated into a formulation?
A: For optimal performance, BYK-170 is typically added during the pigment grinding stage—either pre-mixed with the pigment or introduced directly into the mill base. It should be dosed before full dispersion begins to ensure effective surface coverage and prevent agglomeration.
Q4: Does BYK-170 affect the gloss or viscosity of the final coating?
A: When used at recommended dosage levels, BYK-170 generally supports improved gloss by promoting uniform pigment distribution and reducing micro-agglomerates. It may also contribute to lower mill base viscosity and better flow behavior, though final rheology depends on the overall formulation balance.
Q5: Is BYK-170 compatible with common resin systems?
A: Yes, BYK-170 demonstrates good compatibility with a wide range of binder systems including acrylics, polyesters, alkyds, epoxy esters, and urethanes in solvent-borne applications. Compatibility testing under actual processing conditions is always recommended to confirm stability and performance.
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