In the production of aqueous pigment concentrates and high-end water-based inks, achieving a balance between high pigment loading and low mill-base viscosity is a constant challenge for formulators. While BYK-190 has long been an industry standard, Tianjin Ruike Chemical (www.rk-chem.com) offers a high-performance alternative: RD-9208.

1. Chemical Architecture & Mechanism

RD-9208 is a high-molecular-weight block copolymer with pigment-affinic groups. Like BYK-190, it operates through steric hindrance, providing a robust stabilizing shield around pigment particles. This prevents flocculation and ensures long-term storage stability in VOC-free and solvent-free systems.

2. Core Performance Advantages

• Superior Viscosity Reduction: RD-9208 is specifically engineered to handle "difficult" pigments, such as high-surface-area carbon black and transparent organic pigments. It allows for significantly higher pigment concentrations while maintaining excellent pourability.

• Enhanced Color Development: By achieving a finer and more uniform particle size distribution, RD-9208 maximizes color strength and gloss, ensuring vibrant results in both industrial and decorative coatings.

• Broad Compatibility: It is highly compatible with a wide range of water-borne resin systems, including acrylic, polyurethane (PUD), and epoxy dispersions.

• VOC-Free & Eco-Friendly: Formulated for modern environmental standards, it contains no organic solvents, making it perfect for green manufacturing.

3. Benchmarking: RD-9208 vs. BYK-190

In comparative lab trials, RD-9208 demonstrates matched performance in:

• Rub-out tests (consistent color development).

• Heat aging stability (no significant viscosity drift after 14 days at 50°C).

• Gloss retention on high-end architectural and automotive basecoats.

Technical Summary

• Appearance: Light yellow transparent liquid

• Active Content: 40%

• Recommended Dosage: 5-30% (Organic pigments), 2-10% (Inorganic pigments)

Upgrade Your Formulation Today:Don't let supply chain instability or rising costs hinder your production. Request a TDS or a comparison sample of RD-9208 directly at www.rk-chem.com. Our technical team is ready to provide starting-point formulations tailored to your specific pigment needs.