Solvent-borne, Speciality Additive, Thixotropic Agent

VP 4310-20X Anti-sinking and thickening thixotropic agent

The 4310-20X Anti-sinking and thickening thixotropic agent is a high-performance rheological additive specifically engineered for solvent-based coating systems. Formulated as a pre-activated polyamide wax dispersion, this agent provides exceptional shear-thinning properties, ensuring ease of application while maintaining high viscosity under low-shear conditions. This dual functionality is critical for preventing the sedimentation of heavy pigments and fillers during storage, thereby extending the shelf life of industrial formulations. Furthermore, 4310-20X excels in controlling sag resistance on vertical surfaces, allowing for thicker film builds without the risk of dripping or running. Its unique chemical structure promotes a three-dimensional network within the liquid medium, which recovers rapidly after mechanical stress is removed. Compatible with a wide range of resins including epoxies, polyurethanes, and unsaturated polyesters, it remains a versatile choice for formulators seeking to balance aesthetic finish with structural integrity. It optimizes flow and leveling while ensuring uniform pigment distribution throughout the coating matrix.

Attributes

Key Features and Benefits

Superior Anti-Sinking: Effectively prevents the hard-packing of metallic pigments, glass beads, and heavy mineral extenders during long-term storage.
Excellent Sag Resistance: Enables the application of high-build coatings on vertical structures without compromising surface smoothness or uniformity.
Rapid Thixotropic Recovery: Immediate viscosity rebuild after application ensures optimal film thickness and prevents “edge pull” on complex geometries.
Temperature Stability: Maintains consistent rheological performance across varying processing temperatures without the risk of seeding or graininess.
Enhanced Flake Orientation: Facilitates the uniform alignment of metallic and pearlescent pigments, significantly improving the optical “flop” and metallic brilliance.

Specifications

Technical Highlights

Chemical Composition: A specialized pre-activated organic polyamide wax dispersion delivered in a precise hydrocarbon and alcohol solvent carrier system.
Active Content: Features a high concentration of thixotropic fibrils (20% ± 1%), ensuring potent rheology control at exceptionally low addition dosages.
Broad Compatibility: Demonstrates excellent solubility parameters with acrylics, alkyds, epoxies, chlorinated rubbers, and unsaturated polyester resin systems.
Zero-Heat Activation: Unlike traditional waxes, this grade is fully pre-activated and does not require specific temperature windows for effective dispersion.
Surface Integrity: Engineered to provide rheology control with negligible impact on intercoat adhesion or final surface gloss levels.

Download Technical Data Sheet (TDS)

Practical industry uses

Applications

Marine and Protective Coatings: Essential for high-build anti-corrosive primers and antifouling paints requiring extreme vertical sag resistance in harsh environments.
Industrial Machinery Paints: Used in heavy-duty equipment finishes to prevent pigment sedimentation and ensure uniform color consistency across large batches.
Automotive Refinish: Optimizes metallic flake orientation in solvent-borne basecoats while providing critical viscosity control for high-solids clearcoat applications.
Wood Finishes: Improves the suspension of flatting agents and stains in polyurethane and acid-curing wood coatings for a more consistent finish.
Adhesives and Sealants: Acts as a primary thickening agent in solvent-based mastics to prevent slump during the curing process.