Solvent-borne, Speciality Additive, Wetting & Levelling Agent

VP 7411 Wetting Levelling agent

The 7411 Wetting and Levelling Agent is a high-performance, polyether-modified polysiloxane surfactant specifically engineered to optimize the surface tension of liquid coatings, inks, and adhesive systems. In the modern chemical industry, achieving a defect-free finish is paramount, and 7411 serves as a critical additive to ensure uniform substrate wetting and superior flow characteristics. By significantly reducing the static and dynamic surface tension, this agent effectively eliminates common surface defects such as craters, fish-eyes, and orange peel effects. Its unique molecular structure allows for a balanced compatibility profile, providing excellent slip and mar resistance without compromising the inter-coat adhesion of subsequent layers. Furthermore, 7411 is highly valued for its ability to stabilize the film formation process across diverse substrates, including plastics, metals, and wood. This versatile additive is essential for formulators seeking to enhance the aesthetic quality and durability of high-gloss finishes in both water-borne and solvent-borne industrial coating applications worldwide.

Attributes

Key Features and Benefits

Superior Surface Tension Reduction: Effectively lowers the liquid surface tension to ensure optimal wetting on low-energy substrates effectively.
Anti-Cratering Properties: Prevents surface defects like fish-eyes and craters caused by substrate contamination or airborne impurities during application.
Enhanced Surface Slip: Significantly improves the scratch and mar resistance of the dried film, extending the coating’s service life.
Excellent Levelling Performance: Promotes a smooth, mirror-like finish by facilitating rapid de-aeration and flow during application.
Broad System Compatibility: Exhibits exceptional stability in solvent-borne, water-borne, and UV-curable systems without affecting inter-coat adhesion or causing unwanted haze.

Specifications

Technical Highlights

Chemical Identity: 7411 is a polyether-modified dimethylpolysiloxane copolymer; note that “7411” is a grade designation, often associated with CAS 134180-76-0.
Active Content: Formulated as a 100% active, non-volatile liquid, ensuring high efficiency at low dosage concentrations.
Dynamic Efficiency: Operates effectively at low concentrations, typically between 0.1% and 1.0% of the total formulation weight.
Thermal Stability: Maintains performance integrity across a wide temperature range during both the curing and application process phases.
Solubility Profile: Fully miscible in most organic solvents and readily dispersible in water-based resin systems with proper high-speed shear.

Download Technical Data Sheet (TDS)

Practical industry uses

Applications

Automotive OEM and Refinish: Crucial for achieving the high-gloss, defect-free “wet look” required for topcoats and clear coats.
Industrial Wood Coatings: Enhances the wetting of wood pores and prevents crawling on oily or resinous wood surfaces.
Printing Inks: Improves leveling and substrate wetting in flexographic and gravure inks, particularly on plastic films and foils.
Protective Metal Coatings: Provides uniform coverage on metal substrates, ensuring corrosion resistance by eliminating film voids and thin spots.
UV-Curable Systems: Optimized for rapid-cure environments, ensuring the liquid film levels completely before the high-intensity UV exposure begins.