Solvent-borne, Speciality Additive, Thixotropic Agent

VP 4330A Anti-sinking agent for polyethylene wax

The 4330A Anti-sinking agent is a high-performance rheological additive specifically engineered for use in polyethylene (PE) wax dispersions and various liquid coating systems. As a specialized polyamide-based or modified wax derivative, it serves the critical function of preventing the sedimentation and hard-packing of dense wax particles during storage. In the complex landscape of industrial coatings and inks, maintaining a homogeneous distribution of polyethylene wax is essential for achieving consistent surface properties like slip, rub resistance, and matting. The 4330A grade operates by creating a three-dimensional thixotropic network that suspends particles without significantly increasing the application viscosity. Its chemical architecture is optimized for compatibility with solvent-borne systems, ensuring that the additive does not interfere with the final film’s optical clarity or gloss levels. By utilizing 4330A, manufacturers can guarantee long-term stability and ease of redispersibility, which are vital for high-quality protective and decorative finishing products in global markets.

Attributes

Key Features and Benefits

Superior Suspension: Effectively prevents the gravitational settling of polyethylene wax and heavy pigments, ensuring a uniform mixture.
Thixotropic Efficiency: Provides excellent shear-thinning properties, facilitating easy application while maintaining high-structure integrity during rest.
Syneresis Control: Minimizes oil separation and liquid-phase migration, extending the shelf-life of finished wax dispersions and coatings.
Film Integrity: Maintains the mechanical properties of the coating, such as adhesion and flexibility, without causing yellowing.
Ease of Incorporation: Disperses efficiently under standard high-speed stirring, reducing processing time and energy consumption. It also improves anti-sagging performance on vertical surfaces.

Specifications

Technical Highlights

Chemical Composition: Primarily composed of modified polyamide wax. (Note: CAS 4330A is a grade designation; specific chemical components vary by supplier).
Effective Temperature Range: Maintains rheological stability across a broad thermal spectrum, typically from 15°C to 60°C.
Dosage Optimization: Highly active at low concentrations, generally ranging from 0.5% to 2.0% based on total formulation weight.
Compatibility: Demonstrates excellent solubility and performance in non-polar to medium-polar solvent systems, including xylenes, mineral spirits, and acetates.
Particle Size Stability: Does not promote particle agglomeration. Its refractive index is carefully matched to prevent film haze.

Download Technical Data Sheet (TDS)

Practical industry uses

Applications

Wood Coatings: Essential for maintaining matting agent distribution in premium solvent-based furniture lacquers and stains.
Industrial Finishes: Used in automotive primers to ensure metallic flake and wax orientation remain consistent.
Printing Inks: Prevents the settling of rub-resistance additives in gravure and flexographic formulations for packaging.
Marine Coatings: Provides anti-settling properties for heavy-duty anti-corrosive paints and ship bottom coatings.
Plastic Coatings: Ensures uniform surface texture in coatings for consumer electronics and automotive interiors.
Coil Coatings: Improves the storage stability of wax-modified coatings used for pre-painted metal sheets.