Dispersing Agent, Solvent-borne, Speciality Additive

VP 6710 Anti-sinking dispersant

Anti-sinking dispersants, such as those designated under industrial series like 6710, are specialized rheological additives designed to solve the critical challenge of pigment and filler sedimentation in liquid formulations. These chemicals function by establishing a controlled three-dimensional network through hydrogen bonding or controlled flocculation within the resin matrix. By optimizing the interfacial tension between solids and the carrier liquid, they prevent high-density particles—such as titanium dioxide, barites, or metallic flakes—from settling into a hard cake during storage. As a professional industrial chemist, I recognize these agents as essential for ensuring the long-term homogeneity and shelf-life of complex coatings. They allow for consistent color development and uniform physical properties across different batches. Beyond mere suspension, these dispersants are engineered to provide shear-thinning profiles, ensuring that while the product remains stable at rest, it remains easy to pump, pour, and apply under mechanical stress.

Attributes

Key Features and Benefits

Prevents the formation of hard-settled pigment cakes, ensuring easy remixing.
Enhances storage stability for high-density inorganic fillers and metallic pigments.
Maintains uniform color strength and prevents shade drifting during application.
Provides excellent thixotropic properties without significantly increasing base viscosity.
Improves the sag resistance of coatings on vertical surfaces.
Compatible with a broad spectrum of solvent-borne resins and polar systems.
Minimizes the impact on final film gloss and transparency compared to traditional thickeners.

Specifications

Technical Highlights

Employs a controlled flocculation mechanism to build a reversible structural network. High molecular weight polymeric structure provides superior steric stabilization.
Exhibits distinct shear-thinning rheology: high viscosity at low shear, low viscosity at high shear. Effective at low concentration levels, typically ranging from 0.5% to 2.5% of total weight. Temperature-stable performance ensures network integrity during high-speed grinding or hot storage. Optimized for interaction with hydroxyl and carboxyl groups on pigment surfaces.

Download Technical Data Sheet (TDS)

Practical industry uses

Applications

Heavy-duty anti-corrosive industrial coatings and marine primers.
Automotive refinish paints and metallic basecoats containing aluminum or mica flakes.
Architectural wood stains and coatings requiring suspension of matting agents.
High-viscosity printing inks, specifically for gravure and screen-printing applications.
Unsaturated polyester resins (UPR) and gel coats for composite manufacturing.
Pigment concentrates and universal colorants requiring long-term suspension.
Epoxy-based floor coatings and thick-film structural adhesives.