Dispersing Agent, Speciality Additive, Water-borne

VP 6640 Waterborne wetting and dispersing agent

The 6640 Waterborne Wetting and Dispersing Agent represents a sophisticated chemical solution engineered for the high-performance stabilization of pigments within aqueous systems. Utilizing advanced block copolymer technology, this additive functions through a robust steric hindrance mechanism, effectively preventing the flocculation of organic pigments, inorganic fillers, and carbon blacks. By adsorbing onto the pigment surface via specialized anchoring groups, 6640 ensures a uniform particle distribution, significantly enhancing the chromatic intensity and transparency of the final coating. Its chemical architecture is specifically optimized for low-VOC environments, making it an essential component for modern eco-friendly formulations. Beyond simple dispersion, it facilitates a dramatic reduction in mill-base viscosity, allowing for higher pigment loading and improved manufacturing efficiency. Compatible with a broad range of water-reducible and emulsion resins, the 6640 agent remains a versatile choice for formulators seeking to achieve superior gloss, color development, and long-term storage stability in diverse industrial and architectural coating applications globally.

Attributes

Key Features and Benefits

Provides exceptional stabilization of organic pigments and carbon black through high-molecular-weight steric hindrance.
Significantly reduces mill-base viscosity, enabling higher pigment loading and shorter grinding times for increased production throughput.
Enhances color strength, transparency, and gloss while effectively preventing flooding and floating during the application process.
Exhibits excellent compatibility with common waterborne binders, including acrylic, epoxy, and polyurethane dispersions, ensuring formulation flexibility.
VOC-free and APEO-free composition aligns with stringent environmental regulations and sustainable manufacturing standards.
Improves storage stability by maintaining consistent viscosity and preventing pigment sedimentation over extended periods.

Specifications

Technical Highlights

Chemical Composition: Solution of a high-molecular-weight block copolymer containing multiple pigment-affinic functional groups.
Solid Content: Typically ranges between 35% and 45%, providing a concentrated active ingredient for cost-effective dosage.
Ionic Character: Non-ionic/anionic nature ensures broad compatibility across various pH ranges and complex resin systems.
Stabilization Mechanism: Predominantly steric stabilization, which is more robust against electrolyte sensitivity than purely electrostatic methods.
Solvent System: Water-based delivery system, ensuring low odor and ease of incorporation into aqueous formulations.
Density: Approximately 1.05–1.10 g/cm³ at 20°C, facilitating precise volumetric dosing in automated production lines.

Download Technical Data Sheet (TDS)

Practical industry uses

Applications

Automotive Coatings: Ideal for waterborne OEM and refinish systems requiring high gloss and flawless pigment dispersion.
Industrial Finishes: Used in high-performance metal coatings and machinery paints to ensure color consistency and durability.
Wood Coatings: Enhances the clarity and grain definition of water-based stains and clear topcoats for furniture.
Pigment Concentrates: Primary dispersing agent for resin-free and resin-containing pigment pastes used in point-of-sale tinting.
Printing Inks: Optimizes flow properties and color density in water-based flexographic and gravure ink formulations.
Architectural Paints: Improves the tinting strength and rub-out resistance of premium decorative interior/exterior emulsions.